Why Are Cremation Ashes Different Colours?
It might sound a little morbid, but this is a question that comes up more often than you’d think: why do cremation ashes look different from person to person?
One family was so puzzled by the contrast between two sets of ashes that they decided to ask an expert — and the answer turned out to be quietly fascinating.
When the family’s grandmother died, her ashes were dark in colour, present in a large quantity, yet light in density. Some time later, when they scattered the grandfather’s ashes, the difference was striking. His were pale cream, fine and powdery, almost like burnt paper — and noticeably heavier.
Naturally, the family wondered what could possibly explain such a contrast.
The grandmother, they explained, had been obese, diabetic, and had one leg amputated, with a metal rod in the other. The grandfather, by contrast, was underweight, drank heavily, and suffered from heart problems, but was otherwise in relatively reasonable health.
An expert explanation
The answer came from cremation specialist Erin Phelps, who offered a clear and grounded explanation.
“Your grandmother’s cremated remains were very dark most likely because of the volume of adipose tissue (fat), which can leave a stain on the cremated remains. An obese person’s cremation reaches a much higher temperature due to the adipose tissue, and the bones — which make up most of the ashes — are exposed to heat for longer. This can make them less dense.”
By contrast:
“Your grandfather’s cremated remains were lighter in colour because there was less adipose tissue. His cremation temperature was lower and for a shorter time, leaving the remains denser and heavier.”
She also explained that texture can vary depending on what happens after cremation:
“The difference in texture may also come down to how the remains were processed — different machines pulverise the bone fragments in different ways before they’re placed in the urn or container.”
A note on other influencing factors
Since this explanation was first shared, a reader got in touch to say her loved one’s ashes were also dark — despite the deceased being lean in build. That reminder is important.
While body composition can play a role, it isn’t the only factor.
Other influences can include:
Cremation temperature
Length of time in the cremator
The type of cremation equipment used
How remains are processed afterwards
Occasionally, the container or tray used during cremation
In other words, there’s no single rule — only a combination of variables that shape the final appearance.
What really matters
Whatever their colour or texture, cremation ashes remain exactly what they are: the physical remains of someone loved. Differences in shade, weight or consistency don’t change their meaning, significance or the care with which they should be treated.
Not exactly dinner-table conversation — but for families who notice and worry, it can be quietly reassuring to understand why.
More information
Here are some organisations that may be able to help if you wish to dig deeper
My husband has many colored chunks among with white. He had turquoise, pink, many brownish silver ones that did have his gold radiation markers stuck too them. Some powder but not as much as I thought. Lotta cremains for a small guy. I assume it’s mostly bone and cancer. As I’ve heard not all cancer burns in the crematory. But well now I know I got the right fella for sure
Alycia
This is interesting that you can see the gold fiduciary markers. This is just bone the cancer is organic matter and will combust the markers are gold and will not, but they are not in themselves cancer or cancerous. The colours tend to be created from any oxidation of metal or such like in the body. The cancer treatment may well be the cause but I could not say for sure.
Kind regards
Richard
Hello,
I recently had my furry child cremated and we were told that he had cancer due to some of his ashes appearing turquoise. Can anyone confirm this? I can’t find any information online.
Dear Jasmine
I am not sure this is the case, I have certainly not heard about it. I can’t think of any reason why cancerous cells would cause this colour variation.
Sorry not be much use…
Regards
Richard
Hey does the remains suppose to be chunked full of big pieces of bone??
Hi Trina
How big is big, I would not expect them to be bigger than small your pinky fingernail. If they are I would enquire why?
Kind regards
Richard
my husbands ashes are very heavy and not ashes but little white bones, i feel some thing is not right he was 6 feet and about 195 i do not know why i am feeling this way please help thank you Pat
Hi Pat
It sounds like you are from the USA, cremation is not regulated in the same way as it is here in the UK as such the machine used to reduce the bones to ashes may be of a different standard. Sorry.
Kind regards
Richard
My son was diagnosed with diabetes. I was not there for the cremation and the remains are a pinkish hue and the grains were very big. Is it a possibility that it wasn’t a body they sent me?
Dear Lisa
I am sorry to hear this. If it is in the UK it is 99%+ chance that these were the ashes of your son. The colouring can be down to many reasons – the clothes and the coffin for example. The grains size depends on what type of process they used after cremation. Presumably there was some smaller grains and finer particles as well within the ashes.
Kind regards
Richard
Is there an explanation for a person’s ashes being pure white and a weight of 10lbs? I thought it might be quite unusual. The person was a middle-aged male at least 30lbs overweight at the time of his death and considerably heavier than that throughout his life.
Dear Jay
The colour is due to the combustion process, we see very white ashes from time to time. 10lbs does seem rather heavy although not exceptional. Broad big men who are heavy can result in a lot of ashes.
Kind regards
Richard
Hello!
I came across this discussion looking for a reason for the difference between my moms and dads cremains. My mother passed in December 2023 and her ashes came back weighing 4.5 pounds with different colors and textures throughout. We dis interred my fathers ashes who has been gone 52 years so we could keep them together for future scattering. Anyway, The ashes they sent us weighed under two pounds, very white, uniform consistency. He was over 6′ tall when he passed. How could he only produce such a small amount of ashes unless they did not use them all to put in the container. And I have never seen ashes so fine without bone fragments. It all makes me suspicious. Can you advise?
Dear Jane
I am am wondering if you maybe in the US where cremation practises are slightly different. Two pounds for one set of ashes is very low, what with it being that long ago it is possible that not all the ashes were recovered, I really couldn’t say with any certainty. I can’t dispel you concerns around this I am sorry to say. And sadly I don’t know what to suggest for any next steps. Very sorry.
Kind regards
Richard
Hi! My friend bought an antique metal pitcher from a thrift store. He kept hearing something in the bottom of it and noticed it seemed to have a sealed compartment. He thought maybe there was rust inside he needed to clear out. When he pried it open, there was a small plastic bag wrapped in newspaper. Inside the bag is this white and gray colored substance, almost pebble in consistency, but some powder like at the bottom. Does this sound like cremains? We can’t think of what else it would be.
Dear Melanie
That is exactly what it sounds like to me!
Kind regards
Richard
The weight is dictated by both bone density and to a lesser degree, time spent in the retort. The color is dictated by how long the body was in the retort and how high the temp is along with just personal body chemestry. The longer amount of time in the retort, the more gets broken down. The less time, the more there is to pulverize and the harder it is to break it down to “ash” instead of “sand”:
Retort?
My cats remains look like charcoal with soot! Have had 7 other pets cremated and they are all light gray or off white.. also the last one that looks like charcoal is twice the size of remains and the cat was half the size of all other cremated pets- I’m devasted on why…
That does sound very odd, have you spoken the crematoria about it? I would take it up with them and see what they say.
Hi,
I lost my dad in 2015, I had some of his ashes sent to me as there was a distance of 200 miles and even though I went to the funeral, I didn’t have the chance to see the funeral director where my dad was taken and his wife handled that side of things. When I got the ashes they were like small peaces of charcoal dark grey to light grey, and not that I took it out of the urn, there didn’t seem to be anything that looked like power, at the time I just thought that was normal, my dad had been in hospital with having end of life care he had only found out 4 weeks earlier that he had leukaemia and was told he had 3 to 4wks to live, he had type 2 diabetes and prostate cancer too, so my question is was the remains normal, he wasn’t overly over weight and would like to get some peace of mind on this… Hope to hear back soon
Dear Karen
Without seeing them it is difficult to say, but there can be a large variation in colour and consistency. What you have described could well be ashes.
I hope this brings some piece of mind.
Kind regards
Richard
I’m really glad I found you maybe you can answer my question. These are two completely different creamatories and years apart and two completely different sides of the family. My husband’s mom passed away in 2001 she was 400 plus pounds do to her thyroid. She passed from extreme sepsis during a C-section an intern didn’t have a doctor or nurse present and he sliced her large intestine and didn’t tell anyone and closed her back up. She lingered for a long time on antibiotics and her other medications until she was removed from life support. I’m not sure of what her creamation process entailed but when my husband’s little key chain broke when I saw her ashes I was confused. Her ashes look like ground up charcoal with small bits of bone flakes. I considered that it was her sepsis that made it do bad. They couldn’t run her blood through the machine to clean it she broke three machines her blood was do bad.
The second one is my mother she just recently passed this passed June and her ashes are almost a silvery gray color nearly close to her silver gray hair. She had way more dark hair than gray. She died of non virus related pneumonia was on antibiotics for 3 weeks prior to being in the hospital where she had more antibiotics. She was on medication for fluid retention, congestive heart failure, breathing medications for her asthma and copd, insulin for her diabetes, oxygen for copd, medication for her chronic body pains and neuropathy, anxiety medication, and medication for her frequent her gets. She was about 220 to 240 pounds in weight and she wasn’t cremated in a casket. She had a knee replacement done maybe 7 years ago. Her clothing was a peachy punk shirt with a pink and brown flower design and brown pants, a tan bra, purple or greenish blue panties, and black socks. I haven’t yet opened them to divide them up but they look like fluffy crafting sand if that makes sense and are kind of heavy. I don’t know if there’s any color bits in them. Do you know why these ashes turned out the way they did.
Dear Shy
I can only surmise from what you have told me but your mothers appear standard, clothing can impact the colour but that is mainly from leather, the texture is to do with way the ashes were processed after cremation. You mother-in-laws could result from her weight which could have had an impact on standard combustion. As you will see from the above there are is a huge array and reason for ashes looking the way they do. I hope this helps.
Regards
Richard
There were very small bits of something turquoise in my mother’s ashes. I wondered if it came from gold fillings in the teeth?
Dear Pam
I think it is unlikely gold would cause that as it is inert. I believe such colours may be caused other items cremated at the same time eg leather in footwear.
Kind regards
Richard
My husband as well and I do put some of this towards cancer. As much as they say cancer burns away, it does not as I found a big chunk of his gold fiduciary markers in a very dark chunk. Ranges from a little pink, some turquoise, ALOT of hard gray chunks, and white chunks. Than powder of course. But most chunks were white and others very colorful. Will say I was shocked to find his gold markers from his cancer in there..
hello my girlfriend of ten years passed away November 20, 2019. I had her cremated and most of her ash is a nice egg shell off white color. and I found one of those red pieces but thanks to you I now know that it was not part of her ashes. I had to separate her ashes for family and myself, while I was doing this I came across some pieces that were very pretty but odd. one piece looked like light green emerald it had three little holes in it but very much looks like a stone. also there were a few pieces that looked more like an opal very iridescent. I had the funeral home take of the only thing she had on and she was cremated in a plain cardboard box. she was 32 years old, just this last August did we find out that she had metastatic breast cancer. the only other thing we a couple dark pieces but those I’m pretty sure are possibly teeth cause the depo shot made her teeth crumble which of course turned black.
When referring to cremated remains, and color… can cremains be colored with substances such as food coloring or spices such as cumin or cinnamon? Are there any that would destroy the natural calcium-sodium-potassium mixture? Can they be mixed with fine glitter before spreading them at ceremonies, or just to keep in a beautiful clear urn?
Dear Kim
I am afraid I don’t really know, I would imagine that it would be possible as I doubt the spices would destroy the ashes – there would be none that are that acidic.
Yes I am sure they could be mixed with glitter, but I would recommend finding a glitter that is biodegradable as glitter these days is made from plastic, which should not be spread on the ground. You can keep them in an urn if you wish too.
I hope this helps.
Thanks
Richard
Hi I lost my dad 7 months ago when his cremated remains came back the white bag was almost full and was 11 days before I got his ashes back, 3 weeks ago my mum died both mum and dad were small framed had the same coffin and just a couple of photos with them and mums cremated remain was not very full at all any idea to why please
Anita
Dear Anita
This isn’t uncommon, without wishing to be indelicate, it is more common for bone mass destiny to be greater within men. Men tend to produce more ashes on average even when people are of similar build.
Kind regards
Richard
My daughters ashes are light pink is there a reason why light whitish pink?
Dear Norma
I will be honest I have not come across that before, if it is very light tinge then I would suspect it is to do with the outfit she may have worn eg a pigment in leather shoes. But in truth that would be guesswork. Sorry.
Regards
Richard
I read most of the post and none come close.. My mother recently passed from cancer of the palate which is a horrible way to go.. She had it for a long time without even knowing we just noticed she stopped eating an would find excuses like it has to do with shingles she got from bee sting on forehead or the dentist messed up her teeth, etc.. im sorry for going on its just i finally understand now why she didnt eat.. my poor mother suffered for years cuz she was afraid a dr would tell her bad news she already felt an we just thought she didnt want to eat to ruin her buzz cuz she could drink still till her last 6mo.. now my question is why did her ashes glow of florescent green as soon as it touched the river?? and it stayed ina sworm like cloud under water for like 5min drifting away.. i have a video of it an pix i wish i could show it but we all just said shes saying thank you an i love you and shes happy but say there has to be more.
Dear Michelle
Difficult to say, it looks as if there could have been a chemical reaction or disturbance of microbiological forms living in the water body. There are a lot of factors to consider: type of waterbody and catchment even the size of the ash particles. Whatever is was I am glad it made for a more wonderful ceremony.
Regards
Richard
Ok I had my oldest brother cremated and his ashes or creamy color cocaine in 15 months later I had my middle brother cremated and he is completely black and they wasn’t no more than 10 lb apart and size and weight and they both weight was about 170 to 180
Were they cremated at the same crematoria? We received lots of ashes back and the ashes from the same crematoria seem reasonably consistent but vary lots from one to the other.
My son 44 was cremated his ashes are pale sand color and lots of white.
My husband 44 and fit no fat his ashes came back like ground up black coal my 22 year old son was obese and his ashes were grey and normal looking both were cremated at same place 3weeks apart can you please explain the difference thank you Jennifer golebiewski
Dear Jennifer
This sounds very distressing. I am not sure I can explain, but if the place was the same and the time period was close. Then it can only be another of other factors what you husband was wearing when he was cremated, was it a different style of coffin? Both these factors add different material into the process. It could be that the when your husband was cremated the oven was slightly manfunctioning. I am afraid that is as close as I can get.
Kind regards
Richard
You don’t know squat
Dear Hardy
Thank you for pithy and unambiguous input.
Regards
Richard
My neighbor ashes is green can u pls explain how its comes..???thank you
Hi Lyn
It is difficult to say for certain however green can arise from leather tannins, so if your neighbour was cremated wearing shoes, as most people are, then the colour could have arisen from this.
Regards
Richard
Most ppl here are cremated in a hospital gown and no shoes.
Hi . Can you please help me understand why my sons ashes are all i can say us cat litter i had never seen ashes until lost my son so rhought it was normal until this morning when we opened my mum and step dads to take them to scatter their ashes are a different colour and alot finer . This as quiet upset me with my boys been sifferent
Dear Alison
Please don’t be upset, this is perfectly normal. There can be wide differences in colour and granularity. The variations are down to the process used at the crematoria, the body and the coffin. Without wishing to go into too much detail: the heat, the way the remains are reduced, the material of the coffin and a person’s weight and age all have an impact. I will elucidate further if you wish, but I am conscious I don’t want to make things any worse.
Kind reagrds
Richard
My question is similar in regards to this.
I have never in my life seen Remains “ashes” until my father passed away.
Recently I have received these back and they are similar to this kitty litter gravel type. Its whit grey brown and black and Im a little confused as to if this is how they should be. Yes he was obese.
Ashes vary in colour (white, greenish and the colours you have mentioned) and size depending on the type of cremator, temperature, duration and the process by which they are reduced. The weight issue will make a difference as discussed above. I hope this helps.
My sisters ashes were white and very granular. She had donated her body to a medical school for research and they kept it for about 18 months and then she was cremated. What could have caused this?
Dear Jan
It is likely to be down to the cremation process I would have thought, the heat used and then the type of process used for reducing the bone matter into an ashes form, you will see from other comments that one of the previous correspondents (Mike) has specific knowledge in this area so he may be more illuminating.
Kind regards
Richard.
My estranged sister became sentimental and shared our late sisters ashes with me 4yrs after her death. My family became sceptical when we saw her ashes. There is light gray “sand” as well as slightly larger white “shards”, assumably bone fragments, and strangly reddish “shards” as well. We have never encountered tri colored ashes before and worry they may not be authentic. I believe her intentions were good ones but worry they aren’t real human remains. – a sadly sceptical sibling
Without seeing them it is very difficult to tell. And even there are many variants possible. I am aware that green colour can arise from leather tannins. We have come across instances where there have been ash substitution but these are extremely rare even when families are not together any more. One option might be to contact your local crematorium and ask if they might have a look for you, they are likely to have seen the range of colours and coarseness that can occur.
Can I ask why a 21 week still born ashes would come back like black soot out of a chimney .
Sorry to ask but I really need to know why this has happened
Dear Gill
I am very sorry for the loss that you have suffered, the answer is quite a delicate one. What you will have received back is what has been collected by the crematorium. The ashes do not look like an adults cremation ashes because they essentially all bone matter. In the case on stillborn and premature babies the bone has not yet fully formed and are similar to cartilage in make up at that stage, which when cremated will leave only a little ash, or sometimes none at all. I hope this has been some use, best wishes, Richard
Ill just begin by saying that there is usually very little in the way of cremated remains/ashes if anything at all. especially with the cremation of a little ones less then 500 grams or under 20 weeks gestation. One of the reasons being, is that the bones haven’t ossified (cartilage to bone) yet. As a matter of fact, most Canadian Division Registers for deaths and births, classify anything less then 20weeks gestation or 500 grams as a non registible death.
Getting back to the question of why black and sooty looking ashes? This is most likely the result of the little one being cremation in a plastic container. Unlike an adult cremation, babies are usually cremated immediately following the cremation of a adult when the retort (oven) is hot. The cremator is turn off to prevent the blower from blowing around what little remains. So often, soot appears because of hard plastics and especially styrofoam and since the blower fan is off, there is no fan to dissipate the soot and not quite enough heat to burn it off as carbon.
Dear Mike
Thank you once again for your insight and knowledge.
Kind regards
Richard
My father ashes was white mixed with red colour. I would like to know why there is red ashes in it and
not purely white.
Dear Julia. I am afraid I can’t give you a definitive answer. I think the answer might lie in what you dressed your father in for his cremation, as the colour is highly likely to have originated from an item he wore, one previous respondent had come across green originating from leather, so it could something like that? Regards Richard
Dear Richard,
I worry the red colour may imply that my late father is not peacefully died.
He may have some wishes that he wanted his children to fulfill as none
of his children was at his bedside when he passed away. It may seem to
you that I am superstitious but I just want to assure that he had a peaceful
death.
Dear Julia, I can understand your worry, such things can play on people’s minds. However, colour variation happens all the time, it is caused through a chemical reaction and heat. I would not think it represented anything other than a scientific process. So please try not worry. Kind regards Richard
The red mixed in with your fathers cremated remains, is most likely residue refactory brick from the cremator. This comes about when the operator of the crematorium is sweeping the ashes out of the chamber with a steel wire brush attached to a long metal pole. Ive seen this quite often, especially when the cremator machine is in dire need of a rebuild.
Mike thanks once again for coming to the rescue. Much appreciated. Regards Richard
Dark ashes are usually caused by low cremation temperature and not enough time on the cremator. Everything that goes into the cremator is burnt off as carbon and what is left are bone fragments, but with insufficient heat and time, carbon is left behind creating dark ashes during the processing part.
Very informative Mike thank you for input – really helpful, I had never heard of the issue with leather before either.
Info welcomed
My grandfathers ashes came to me from funeral home a garden hose variety brilliant blue / green. I called and got 3 ridiculous call back responses. 1. Maybe the vitamins he took. 2. Possible fillings in his mouth. 3. Finally the head guy ” we don’t know”. Do u have an explanation? Still haven’t spread him and I am sure will cause family illness / and shock when do… Please reply. Thanku
Hello
I have come across this only once before. Whilst I can’t speak with any certainty I hope the following may be of some use in understanding what the cause might be. The colouring is likely to have derived from a metal that was present at the time of cremation. The metal is have could potentially have originated from coffin or from within the body. Was the coffin quite ornate? Was there much metalwork on or in its construction? Alternatively did your Grandfather have any implants eg a hip, as this may be a source – these are removed after cremation. Another thing worth checking (although I accept that is may be unpleasant / distressing) is to look closely at a number of ash grains themselves, if the colour is only on one side or predominantly on one side of the grain this would also imply that this colouring happened during cremation as opposed to when they were reduced to their granular size. I hope this is of some help.
My father’s ashes look almost white, but he has bright blue flecks as well. His ashes are actually quite beautiful. My grandparents were gray and almost a urine, dingy yellow.
I’m a cremator and funeral director. The only time that I’ve seen the cremated remains take on a greenish hue is if leather was cremated with the individual, the tannins in the leather cause this colour change.