Discover the high-precision sorting, grading, and logistics behind our synthetic diamond supply system.
At GDM Diamond, we partner with leading high-pressure, high-temperature (HPHT) synthesis plants. We source raw synthetic crystals grown under strict conditions exceeding **5.8 GPa** and temperatures above **1500°C**.
By overseeing growth chemistry and catalyst guidelines with our partner facilities, we secure consistent crystals. This guarantees blocky, monocrystalline diamonds with low inclusions and high thermal stability.
Raw sourced diamond crystals are processed, sorted, and certified through rigorous chemical and mechanical sifting cycles at our Surat headquarters.
We refine raw bulk crystals using partner-facility impact crushers and acoustic sifting lines. This splits particles along natural growth planes, yielding uniform angular shapes while avoiding microscopic structural micro-fissures.
Every crushed batch undergoes multi-stage chemical acid washes at high temperatures. This strips away amorphous graphite carbon and metallic alloy catalyst residues, achieving a crystal purity of **99.9%**.
Using high-frequency vibration tables and shape sorting scales, we isolate needle-like and flat grains from blocky, robust monocrystalline crystals. This ensures uniform tool bonding performance.
A step-by-step summary of GDM's supply network.
Graphite catalyst check for purity limits.
Synthesis at partner plants inside cubic presses.
Crushing crystals to uniform micro-grits.
Removing metallic catalyst impurities.
Mesh classification using precision sieves.
Final verification of PSD, TT, and shape parameters.
We welcome prospective client audits at our logistics headquarters in Surat. Coordinate a site visit with our corporate relationship team.
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