Natural Sapphire – 1.72 ct – ALGT Certified – Oval Cut Offered for auction is a beautiful natural sapphire weighing 1.72 carats, accompanied by an official ALGT (Antwerp Laboratory for Gemstone Testing) certificate confirming its authenticity and characteristics. This gemstone displays a delicate very light blue color with good transparency, making it suitable for fine jewelry or custom gemstone projects. Gemstone Details Species: Natural Corundum Variety: Sapphire Weight: 1.72 Carat Shape & Cutting Style: Oval, Mixed Cut Measurements: 7.81 x 6.04 x 4.12 mm Color: Very Light Blue Transparency: Transparent Certification Certified by ALGT - Antwerp Laboratory for Gemstone Testing Report Number: 81923665 Date: 09 March 2026 Certificate included with the gemstone Comments Indications of heating present 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.