Goldstone is a type of glittering glass in either brown or blue colour made in a low-oxygen reducing atmosphere. The finished product can take a smooth polish and be carved into beads, figurines, or other artefacts suitable for a semi precious stone, and in fact goldstone is often mistaken for or misrepresented as a natural material. The material is sometimes called sandstone when used in watch dials, despite its lack of resemblance to the porous, matte texture of the natural stone.
Stock Sizes: Available in both brown and blue in cabochon and flat signet stones
Rounds: 6mm – 10mm
Oval: 6x4mm – 40x30mm
Cushion/Antique: 8x6mm – 18x13mm
Chemical Formula: Glass and Copper (SiO2 with Cu)
Crystal Structure: Cubic
Colour: Brown and blue
Hardness: 3.5-4 on Moh`s scale
Refractive Index: 1.53
Specific Gravity: 2.50-2.80
Treatments: Goldstone is a man made material.
Care: As with any glass avoid heat, harsh abrasives and chemicals. Clean using warm soapy water, ultrasonic cleaners and steamers are not recommended.