Natural Blue Cobalt Spinel 2.13 ct – Cushion Cut, Untreated, GFCO Certified

This 2.13 carat natural Blue Cobalt Spinel exhibits a striking deep blue color, enriched by the subtle cobalt presence that gives the stone its exceptional saturation and character. Expertly crafted in a cushion cut measuring 7.92 × 6.22 × 5.39 mm, the gemstone features a brilliant-cut crown and step-cut pavilion, enhancing both sparkle and depth. Certified by GFCO Gem Lab (Switzerland), the spinel is confirmed to be 100% untreated, with no heat or enhancements, preserving its natural purity and