Here for your consideration is an exceptionally rare hand crafted Gem Otjoruharui Blue Chalcedony cabochon. This incredible copper based cryptocrystalline form of silica was last mined in the early 1980's and is coveted for its rich vibrant near chatoyant translucency. According to the IGS, Chalcedony such as this Otjoruharu blue, was once thought to be a 'fibrous' variety of cryptocrystalline quartz, but more recently discovered to be a combination of quartz and another silicate mineral; Moganite (a polymorph of quartz). Both quartz and moganite share the same silicon dioxide chemical composition, but they have varying crystal structures. Moganite is monoclinic, while traditional quartz belongs to the trigonal crystal system. Chalcedony forms with a hexagonal crystal structure. With some very minor iron inclusions seen under 10X magnification, this piece exhibits a brilliant semi translucent, slight adularescent- iridescent blue lavender purple. The color is unmistakable.
Watery, vitreous polish front and back. Standard radius dome. We calibrate these to within a jewelers spec.
Quite the bragging specimen for your heirloom collection.
Perfect for bezel setting such as a ring or pendant, PMC, wire wrap, your next metal, wood or restoration project. Use Your Imagination - We love creative people! A scarce heirloom collectible!
Photographs taken under full spectrum LEDs. Not dyed (You can verify that with a Chelsea filter) unheated and untreated.
Height - 25.85 mm
Width - 13.97 mm
Thickness - 5.5 mm
Weight - 16 carats
Origin - Otjoruharui, Okahandja District, Otjozondjupa Region, Namibia
Ships USPS First Class within 24 hours of cleared payment. Please inquire if you'd like Priority or additional insurance.Everywhere Else, Standard Shipping Fees Apply. Sales tax applies to New York State residents.
International Buyers Will Be Responsible For All Additional Taxes, Duties, Insurance Incurred With This Sale.
Feel Free To Contact Me If You Have Any Questions. Thanks For Looking!
