Crushed Red Goldstone Sand (Synthetic), Medium Sand (0.25mm-2mm)

Red Goldstone is a synthetic, glittering glass that was originally manufactured in Venice during the 17th century. Red Goldstone is made in a low-oxygen reducing environment and contains tiny crystals of metallic copper within a silica matrix. During production, silica, copper oxide, and other metal oxides are melted together and then cooled very slowly to form these tiny glittering crystals. Goldstone does polish up nicely and would be great in your inlay or jewelry projects. Our medium material is considered to be sand sized (very coarse sand to fine sand), ranging between 2 millimeters to 0.25 millimeters. Please see the corresponding sediment size chart.  Mineral Properties Mohs’s Hardness: 6 Specific Gravity (g/cm3): 2.5 - 2.8 Luster: Vitreous Color: Red, Reddish Brown Origin: Synthetic/Man-made This product is man-made. Pictures are taken in full sun and material is dry. Size measurements are using the metric system (millimeters), including the metric ruler (cm/mm) as shown in