Import Beautifully Cut And Polished Tanzanite — Buy in wholesale FOB from Supplier in Thailand

This lot comprises 25 pieces of cut and polished tanzanite offered by Rough & Minerals Co., Ltd., a Bangkok-based supplier located at 98/99 Gems Tower, Charoen Krung. The material is presented as 100 percent clean, a term in coloured gemstone trading indicating absence of visible inclusions to the unaided eye. Available shapes include pear, oval, cushion, round, trillion, and octagon, suggesting calibrated or bespoke faceting rather than commercial melee. The supplier quotes a starting lot price of USD 230 per carat, with piece-by-piece variation acknowledged.

Tanzanite is the blue-violet variety of the mineral zoisite, with orthorhombic crystal system and pleochroism showing blue, violet, and burgundy axes depending on viewing angle. Standard gemmological assessment for such parcels evaluates hue, tone, and saturation against the GIA tanzanite colour grading scale, clarity per the GIA clarity scale for coloured stones, and cut quality through symmetry, polish, and weight retention. The 100 percent clean claim should be verified against actual loupe and microscope examination, as 'clean' definitions vary between traders and certifying laboratories.

Buyers typically include jewellery manufacturers, high-end retail brands, and investment gem dealers. The parcel format of 25 pieces suits custom jewellery production or curated retail collections rather than mass-market casting. Given tanzanite's single-source origin from the Merelani Hills in Tanzania, Bangkok's role as a cutting and trading centre means provenance documentation and treatment disclosure are critical. Buyers should confirm whether the stones are heated, a standard and accepted practice for tanzanite, and whether any coating or fracture filling has been applied.

Rough & Minerals Co., Ltd. operates from Gems Tower on Charoen Krung Road in Bangkok's Silom gem and jewellery district, specifically at 98/99 Gems Tower, Floor 9A, Bangkok 10500, Thailand. The supplier holds a harbour trust tier but shows zero response rate and zero average response hours, indicating either a newly registered profile or limited platform communication history. Charoen Krung is historically Bangkok's primary gem trading corridor, with numerous cutting workshops, laboratories, and export offices concentrated within a few blocks.

The company description focuses on cut and polished tanzanite with shape variety and parcel pricing, but offers no information on years in operation, cutting facility ownership, gemmological staff credentials, or export volumes. No certifications, membership in trade bodies such as the Thai Gem and Jewelry Traders Association, or client references are present in the source data. Buyers should conduct independent due diligence on company registration and physical premises before committing funds.