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Up for sale is an investment-grade, ultra-rare 2.55-Carat Natural Cobalt Blue Spinel. Sourced from the world-renowned gem fields of Tanzania, this masterfully faceted gemstone features a sophisticated cushion shape with a brilliant crown cut and a 3-step pavilion cut. Measuring precisely 8.32mm in length, 6.60mm in width, and 5.14mm in depth, the gem boasts an exceptional VVS clarity grade. This ensures a virtually flawless, eye-clean canvas that perfectly maximizes its internal light performance, fire, and brilliant, rich violet-blue scintillation.
This collector-grade specimen is completely natural and unenhanced (no heat, no diffusion, no clarity treatments), representing the absolute pinnacle of earth-mined gemstone purity. It comes fully authenticated with its original, premium GFCO Gem Lab Star Report (Report ID: AAP83967-xxxx). The Swiss laboratory analysis guarantees its natural Tanzanian origin, its diagnostic absorption spectrum, and its authentic cobalt-bearing profile, giving you total buying confidence.
Market Context & Value:Natural, unheated Tanzanian cobalt spinels exceeding the 2-carat mark are exceedingly scarce and aggressively outpace standard sapphires in rarity. Because spinel is singly refractive, it exhibits an intense, continuous glow in all lighting environments. Fine Tanzanian cushion cuts of this caliber routinely retail for $3,000 to over $5,500 on loose gemstone exchanges. This pristine stone is priced competitively, making it a spectacular acquisition for a high-end custom jewelry creation, a private collection, or a long-term investment.
The gemstone is safely housed in its presentation box and will ship accompanied by the original physical GFCO certificate. Please review the high-resolution macro photographs closely, as they form part of the description.
Retail for this quality and certification exceeds $2,000. Sources: Gemstock, Gemstone Company
