LARGE 6.85 carat Montana Sapphire Pale Green Rough Natural Untreated Corundum - $685 - (Butte, MT)
A rare collectible item from Montana, the Treasure State: A large Montana Sapphire (Corundum) gemstone. It weighs 6.85 carats and is a pale green color. Today, my scale said 6.95 (see photo) after calibration but I will say 6.85 to be conservative. In photo #2, I shined additional light on the stone in addition to the camera flash. 25 years ago, it was examined by two faceters in Denver and another 15 years ago in Philipsburg, Montana. They said this can be faceted. It was not graded. When shining a light directly behind, it appears clear and translucent. It has a glassy surface when viewed under a magnifier. It is natural and not treated/heated. This was acquired from a mining company operating in the Philipsburg, Montana area over 80 years ago andI believe it is a Rock Creek Sapphire. Please review the pictures and feel free to ask questions before bidding. Item will be well-packed and insured.
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From ebay.com - 1 month ago