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Case Study · Heritage · China

Hakka Ancestral Root Diamond:
5.33ct of Heritage

A 5.33ct emerald-cut memorial diamond created from ancestral cypress tree root carbon for the 33rd World Hakka Conference. A bridge between cultural heritage and permanent carbon crystallisation.

5.33

Carat (ct)

Emerald

Cut Style

~60

Timeline (Days)

Cypress

Carbon Source

CCIC

Certified

China

Origin

Challenge

From Living Root to Permanent Gem

The 33rd World Hakka Conference sought a commemorative object that embodied the Hakka spirit of rootedness and migration — something permanent enough to outlast the conference itself, yet personal enough to represent ancestral connection.

A cypress tree root from a historic Hakka settlement was selected as the carbon source. The challenge: extracting sufficient pure carbon from wood root tissue — structurally dense and chemically complex — to produce a gem-quality diamond of significant size.

Solution

Patented Botanical Carbon Extraction

BioGem Lab applied its patented bio-carbon extraction process (ZL 2010 1 0565778.9) to break down the lignin and cellulose structure of the cypress root, isolating elemental carbon through controlled thermal decomposition and acid purification.

The extracted carbon was purified to 99.95%+ and graphitized before HPHT synthesis. After 18–25 days of growth at 5.5 GPa and 1,450°C, a 5.33ct rough crystal was formed — large enough for an emerald cut that maximised the stone's clarity and geometric presence.

Result

A Conference Heirloom

The finished 5.33ct emerald-cut diamond was presented at the 33rd World Hakka Conference as a permanent symbol of Hakka heritage — a piece of ancestral land transformed into a gem that will outlast generations.

The diamond was certified by CCIC with full traceability documentation, including the carbon source origin, extraction date, and synthesis parameters. It remains one of the largest botanical-source memorial diamonds produced by BioGem Lab.

Production Timeline

From Root to Gem

Seven-stage pipeline transforming ancestral cypress root into a 5.33ct certified memorial diamond.

Sample Intake

Cypress root from historic settlement

Carbon Extraction

Thermal decomposition of wood tissue

Purification

Multi-stage refinement ≥99.9%

HPHT Growth

5.5 GPa, 1,450°C, 18–25 days

Cutting

Emerald cut for maximum clarity

Certification

CCIC with full traceability

Presentation

33rd World Hakka Conference

Process Documentation

Lab & Heritage Gallery

Process images from the Hakka Ancestral Root Diamond production — from cypress root intake to finished 5.33ct gem.

Hakka heritage site — historic settlement where the cypress root carbon source originated

Hakka Heritage Site

Historic settlement, source of the cypress root

Carbon powder extracted from ancestral cypress root, sealed in laboratory vial

Extracted Carbon

Purified carbon powder ready for graphitization

5.33ct emerald-cut Hakka Ancestral Root Diamond — finished memorial diamond

5.33ct Emerald Cut

Finished diamond presented at the 33rd World Hakka Conference

Hakka Ancestral Root Diamond in presentation gift box

Presentation Box

Heritage-themed packaging with CCIC certificate

"This diamond is not just a gemstone. It is the soil our ancestors walked on, transformed into something that will outlast all of us."

Conference Representative

33rd World Hakka Conference · Heritage Project

Related Technologies & Resources

HPHT Technology

Technical specifications for botanical carbon diamond synthesis.

Partnership Program

White-label OEM setup for cultural heritage and memorial brands.

Laboratory

CCIC certification, traceability systems, and quality assurance protocols.
FAQ

Frequently Asked Questions

Can you create diamonds from tree roots or other plant sources?

Yes. BioGem Lab's patented carbon extraction process can handle a wide range of biological sources, including tree roots, plant fibers, hair, and fur. The Hakka Ancestral Root Diamond project used cypress root — a dense, lignin-rich material that required extended extraction time but yielded sufficient pure carbon for a 5.33ct diamond.

What is the largest diamond you can produce from botanical carbon?

Diamond size depends on the carbon yield of the source material and the available HPHT synthesis capacity. The Hakka Ancestral Root Diamond at 5.33ct represents one of our largest botanical-source productions. For typical partner projects, standard SKUs range from 0.5ct to 2.0ct.

Do you provide documentation for cultural or heritage projects?

Yes. We provide full traceability documentation including carbon source origin, extraction photographs, synthesis parameters, and gemological certification. For heritage projects, we can also provide narrative documentation suitable for museum displays, conference presentations, or commemorative publications.

How long does botanical carbon extraction take compared to hair?

Botanical sources like wood and plant fiber typically require longer extraction than hair due to their cellulose and lignin structure. While hair extraction takes 7–10 days, dense wood roots may require 14–18 days. The total project timeline remains approximately 60 days from sample intake to finished diamond.

Preserve Heritage in Carbon

From cultural landmarks to ancestral memorials — we can transform meaningful biological sources into certified diamonds with full documentation and heritage-sensitive handling.

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