Bidspirit auction | 5.25 Carat Natural Unheated Blue

5.25 Carat Natural Unheated Blue Sapphire - An exceptional, loose natural blue sapphire weighing 5.25 carats. The gemstone features a classic cushion-shaped outline, meticulously faceted with a brilliant-cut crown paired with a step-cut pavilion to optimize light return and depth of color. Measuring 13.76 x 10.17 x 4.01 mm, the stone possesses a highly transparent crystal structure. Characterized by a Mohs hardness of 9, the mineral species is identified as Natural Corundum. Accompanied by a GIA (Gemological Institute of America) Colored Stone Grading Report stating that the sapphire exhibits no indications of heating (unheated), with internal characteristics indicative of a Basalt-related geological origin. [NEW BUYERS of high value / precious metals and stones items may not pay with credit / debit cards. If this is your first purchase with Keystone Auctions, payment must be made with cash, cashier's check, money order, bank wire or ACH. Please plan accordingly.] Condition: Absence of a condition statement does not imply the lot is in perfect condition, free from flaws, restoration, or the effects of aging/use. Request Condition Reports via email or telephone in advance of the auction. Any condition report verbally or written is only an opinion and should not be treated as a statement of fact. The buyer is expected to be the expert. Country of origin, material is not guaranteed. Credit or Debit Card payments by New Buyers of high value items, gold, or silver will not be accepted; instead, form of payment must be cash, cashier's check, money order, or electronic funds transfer. // Registration, bidding, and participation in this auction constitute the bidder?s electronic acceptance of these Terms and Conditions, forming a legally binding contract enforceable under applicable law.