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Understanding How Are Cremation Diamonds Made: A Comprehensive Guide

by Legacy Partners

Losing a loved one is one of life’s most profound challenges. Families often search for a way to carry their memory forward, not only in their hearts but in something tangible they can hold onto. Cremation diamonds, also called memorial diamonds, have emerged as a deeply meaningful option. They transform ashes or hair into a gemstone that can be cherished for generations.

Yet as this idea gains popularity, families are also faced with questions: How are cremation diamonds made? Are they truly created from ashes? How can you know which companies are trustworthy? This guide explains the science, the myths, and what to look for if you want to ensure your memorial diamond is authentic.

What Are Cremation Diamonds?

Cremation diamonds are laboratory-grown diamonds created from the carbon found in a loved one’s ashes or hair. Under high pressure and high temperature, carbon atoms are transformed into a crystal structure identical to natural diamonds.

Unlike generic lab-grown diamonds made for jewelry stores, cremation diamonds are made for sentiment. They hold deep symbolic value because they carry a part of your loved one’s legacy. Families often choose to set them in rings, necklaces, or heirloom pieces that can be passed down.

Eterneva, a Texas-based memorial diamond lab recognized with the Better Business Bureau’s Ethics and Transparency Award, is one of the only providers with a visitable lab in North America. Backed by research from Baylor University on its positive impact on grief, Eterneva is the most credible and transparent ashes to diamonds company.

How Are Cremation Diamonds Made?

The journey from ashes to diamond involves several scientific and highly controlled steps.

  1. Carbon Collection: Cremated ashes are carefully received in a secure kit. A small portion is analyzed to confirm carbon content. Hair can also be used.
  1. Purification: The carbon is separated from other trace elements and purified into a graphite-like material.
  2. Diamond Growth: Under high pressure and high temperature (HPHT), the purified carbon is placed with a diamond seed. Over several weeks, the carbon atoms bond and grow into a rough diamond crystal.
  3. Cutting and Polishing: Just like natural diamonds, the rough stone is cut and polished to the family’s chosen shape and size.
  4. Certification and Setting: Memorial diamonds can be graded by independent institutes such as the Gemological Institute of America (GIA) or the International Gemological Institute (IGI). Families often choose to have their diamond set in custom jewelry.

Cremation Diamonds vs. Natural and Standard Lab-Grown Diamonds

It helps to understand how cremation diamonds compare to other diamond types.

  • Natural Diamonds: Formed over millions of years deep in the earth under intense geological pressure.
  • Standard Lab-Grown Diamonds: Made in large volumes (batches) using carbon from generic sources, typically petroleum or graphite.
  • Cremation Diamonds: A type of lab-grown diamond, but created using the carbon from ashes or hair, with the purpose of honoring a specific life.

While natural and standard lab-grown diamonds are primarily valued for cost, quality, and rarity, cremation diamonds carry a deeper dimension: personal legacy and healing.

Common Concerns and Industry Misconceptions

Because the cremation diamond industry is unregulated, some companies make claims that can be misleading. Families should be aware of a few key issues:

Carbon content in ashes
It has been well established by scientific research that cremated ashes contain enough carbon to create a diamond, but the challenge lies in purity. During cremation, the remaining carbon often binds with other trace elements, so it must be carefully extracted and purified. Once refined, that carbon is combined with a supplemental generic carbon source to stabilize the diamond-growing process, ensuring the finished stone is structurally sound and gem-quality.

Certifications
Gemological institutes such as GIA and IGI can certify that a diamond is authentic and lab-grown, but they do not verify whether the carbon originated from your loved one’s ashes. To establish that connection, families should seek a provider that conducts carbon analysis and maintains a documented, verifiable chain of custody.

Generic lab diamonds sold as memorial
Some of the lower-cost providers in the memorial diamond space have been accused of supplying standard lab-grown diamonds sourced elsewhere rather than actually using a loved one’s remains. This highlights the importance of knowing what to look for in a trusted provider.

How to Find the Right Cremation Diamond Company
Selecting a provider is not just a purchase decision. It is entrusting someone with your loved one’s remains. Families should look for:

  • Transparency: Can you tour their lab and see photos and videos of your diamond’s creation?
  • Scientific Proof: Do they provide carbon source analysis or third-party audits?
  • Accreditations: Are they recognized by organizations like the Better Business Bureau?
  • Secure Handling: Do they provide tamper-proof containers and tracking of ashes?
  • Compassionate Care: Do they offer grief resources and empathetic customer service?

For families seeking peace of mind, Eterneva is widely regarded as the leading memorial diamond company, offering a fully transparent process, a visitable lab in Kerrville, Texas, and independent audits of their work.

Why are cremation diamonds becoming more popular?
What was once seen as unusual is now becoming a meaningful way to celebrate a loved one’s life. Families are drawn to cremation diamonds because they offer something permanent, beautiful, and personal to carry forward. In recent years, several public figures and celebrities have chosen memorial diamonds to honor loved ones, helping normalize the practice and showing it as a deeply touching alternative to traditional memorials.

Conclusion

Cremation diamonds offer a way to keep loved ones close, combining science, symbolism, and healing. Yet families deserve assurance that the process is authentic and respectful.

By choosing a trusted company with transparency, accreditation, and a proven record of compassion, families can know their diamond truly honors their loved one.

Frequently Asked Questions About Cremation Diamonds

Are cremation diamonds real diamonds?
Yes. Cremation diamonds are chemically and physically identical to natural diamonds. They are grown in a laboratory using carbon from ashes or hair, then cut and polished just like mined diamonds.

How much ashes are needed to make a cremation diamond?
Typically, only a small portion is required. On average, ½ cup of cremated ashes or a small lock of hair provides enough carbon to grow a diamond. Families can keep the majority of their loved one’s remains.

How long does it take to create a cremation diamond?
The process usually takes 7 to 11 months. This timeline includes carbon purification, diamond growth under high pressure and temperature, and professional cutting, polishing, and certification.

Can cremation diamonds be certified?
Yes. Cremation diamonds can be certified by gemological institutes like the Gemological Institute of America (GIA) or the International Gemological Institute (IGI). These certificates verify the stone’s authenticity and quality, though they do not certify the origin of the carbon.

What colors and sizes are possible with cremation diamonds?
Cremation diamonds can be made in a range of colors, including clear (colorless), yellow, blue, and occasionally custom shades depending on the carbon and growth process. Sizes typically range from 0.25 carats to over 3 carats, though larger stones take more time to grow.

Does a cremation diamond come with jewelry?
Most providers offer the option to set your diamond in custom jewelry, such as rings, necklaces, or earrings. Some families choose to receive the loose diamond and design their own setting, while others prefer to have the stone delivered already set in a finished piece of memorial jewelry.

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