Natural Blue Sapphire – 0.90 ct – Certified ALGT – Oval A natural blue sapphire weighing 0.90 carats, accompanied by an official ALGT (Antwerp Laboratory for Gemstone Testing) certificate confirming its authenticity and characteristics. Gemstone Details Species: Natural Corundum Variety: Sapphire Color: Blue Transparency: Transparent Weight: 0.90 Carat Shape & Cut: Oval Mixed Cut Measurements: 6.41 × 4.69 × 3.35 mm Certification This gemstone is certified by ALGT – Antwerp Laboratory for Gemstone Testing. Report Number: 74547265 Date: 09 March 2026 The certificate will be included with the gemstone. Comments Indications of heating present (a common and accepted treatment for sapphires) Shipping Fully insured express shipping. The seller: I am a third-generation gemstone and diamond dealer, a Graduate Gemologist and Accredited Jewelry Professional (GIA), and a Diamond Graduate (IGI & HRD). As a member of the Young Diamantaires, GIA Alumni, and SBD, I stay closely connected to the global community and currently serve as Secretary of the GIA Alumni Chapter in Antwerp. Combining family tradition with modern expertise, on Catawiki you’ll find carefully curated items offered for auction, providing excellent opportunities for both wholesalers and private buyers.