A captivating oval mixed-cut natural sapphire, featuring a rich deep blue hue. Weighing 1.78 carats, this transparent gemstone showcases natural inclusion patterns and indications of heating, making it a perfect centerpiece for sophisticated jewelry. Gemstone Specifications Feature Details Certificate Number 667438169 Species Natural Corundum Variety Sapphire Shape and Cutting Style Oval Mixed Cut Weight 1.78 Carats Measurements 8.51 x 5.80 x 3.61 mm Color and Transparency Deep Blue, Transparent Characteristics Natural Inclusion(s) Pattern Refractive Index 1.762 - 1.770 Birefringence 0.008 Specific Gravity 4.00 Certification Lab International Gemological Institute (IGI) Comments Indications of heating Additional Information Shipping: Carefully packed and shipped globally via DHL, FedEx, or UPS from Hong Kong. Duty and Taxes: Responsibility of the buyer. Applications: Ideal for creating luxurious jewelry or as a standout gemstone in a collection. Care Advice: Clean gently with mild soap and warm water; avoid harsh chemicals and prolonged exposure to heat.