Reliable supply, predictable quality
We supply consistent goods at the volumes manufacturers need, parcel after parcel, without quality drift between shipments.
Thai Gem House · Est. 1988
Consistent supply. Uncompromising quality.
A Bangkok-based wholesale trader of natural polished diamonds, supplying jewelry manufacturers and retailers across Southeast Asia for over three decades.
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Who we are
Four generations of diamond traders. We've been in Bangkok since 1988, with family in Mumbai, Surat, Antwerp, Hong Kong, Dubai, New York, and Sydney — the centers natural goods move through. That network is how supply stays consistent across years of repeat orders.
Read our story →Why partner with us
Four generations in the trade
Our family has been in gems and jewelry since long before 1988. That depth shows up in sourcing, sorting, and how we handle relationships.
Natural diamonds, verified twice
Every parcel is tested for natural origin when it enters our office and again before it leaves. No lab-grown, no treated stones, no imitations — meticulous verification at both ends.
-2 to certified stones, all in one source
From the smallest -2 sizes through certified solitaires and fancy shapes — the breadth of inventory needed to consolidate suppliers.
What we supply
Loose Diamonds
Round brilliants from the smallest -2 sieves through 1ct+, calibrated wholesale and parcel-matched on make and color. Daily working stock for melee runs, pavé bands, halo frames, and side-stone supply.
Certified Diamonds
Certified diamonds 0.30ct and up, in any shape, with GIA, IGI, or HRD reports. Center-stone supply for engagement work and high-end retail.
Fancy Shape Diamonds
Princess, oval, pear, marquise, emerald, cushion, radiant, asscher, heart — singles, matched pairs, or volume runs on request.
Fancy Coloured Diamonds
Natural fancy colours sourced through the family network — yellows, pinks, and others, with appropriate laboratory reports.