Here for your consideration is a fine Goldstone "aventurine glass" cabochon. We normally don't get into cutting manmade materials, but this one is pretty cool. Here is some history:
Folklore has it that Goldstone was developed in the 12th century by Italian Monks. Goldstone became famous in seventeenth-century Venice by the Miotti family, who perfected the process. The process to make this material is interesting: The initial batch is melted together from silica, copper oxide, and other metal oxides to chemically reduce the copper ions to elemental copper. The vat is then sealed off from the air and maintained within a narrow temperature range, keeping the glass hot enough to remain liquid while allowing metallic crystals to precipitate from solution without melting or oxidizing. After a suitable crystallization period, the entire batch is cooled to a single solid mass, which is then broken out of the vat for selection and shaping. The final appearance of each batch is highly variable and heterogenous.
High polish front and back. Standard radius radius dome.
This cabochon will make a beautiful pendant, either wire wrapped, bezel set. Use your imagination. We LOVE creative people!
Video taken dry under full spectrum LEDs.
Height – 38.57 mm
Width – 38.57 mm
Thickness - 7.91 mm
Weight - 79 carats
Ships USPS First Class within 24 hours of prompt 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!