Certified natural unheated greenish blue sapphire, 1.91 carat, presented with official documentation from Antwerp Laboratory for Gemstone Testing confirming natural corundum and no indications of heating. The stone displays a desirable oval mixed cut with balanced proportions at 8.26 × 6.29 × 4.01 mm, offering strong presence for its weight and a refined face-up appearance suitable for high-end jewellery or gemstone collecting. Its deep greenish blue character places it in an increasingly sought-after color family, where subtle tonal variation gives the gem a distinctive identity under changing light conditions. Transparent structure and natural untreated status are especially important in today’s market, as collectors and buyers consistently prioritize stones that remain free from thermal enhancement. The near-2 carat size places it in a stronger commercial bracket, where certified untreated sapphires attract significantly higher attention than smaller calibrated stones. The inclusion of a recent laboratory report with matching image and report number adds immediate confidence for resale, mounting, or collection purposes. Expected premium market positioning for a stone of this profile is approximately €900–2,100, with strong presentation and certification supporting upper-tier private sale potential.