gemstone

Goldstone (Brown/Gold)

Aventurine Glass (Man-made glass with Copper inclusions)

AI-generated identification · may be incorrect

Hardness: 5.5-6 (Mohs); Color: Reddish-brown with gold metallic sparkles; Luster: Vitreous to sub-metallic; Crystal Structure: Amorphous (glass base); Specific Gravity: 2.5-2.8

Hardness: 5
Color: Reddish-brown with gold metallic sparkles
Luster: Vitreous to sub-metallic

Identified July 9, 2026More gemstone →

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Physical properties

Hardness: 5.5-6 (Mohs); Color: Reddish-brown with gold metallic sparkles; Luster: Vitreous to sub-metallic; Crystal Structure: Amorphous (glass base); Specific Gravity: 2.5-2.8

Formation & geological history

Goldstone is a human-processed material created in a low-oxygen reducing atmosphere. It was originally discovered by 17th-century Venetian glassmakers. It is formed by melting silica, copper oxide, and other metal oxides, then allowing the copper to crystallize into tiny metallic platelets within the cooling glass.

Uses & applications

Primarily used for decorative purposes, jewelry (beads, cabochons), carvings, and metaphysical collecting.

Geological facts

Despite the name 'Goldstone', it contains no actual gold; the 'glitter' comes from tiny crystals of metallic copper. It is often mistaken for natural Sunstone or Aventurine.

Field identification & locations

Identify by its uniform, intense aventurescence (sparkle) and smooth, glass-like surface. It is not found in nature; if seen in the 'field,' it is likely discarded or lost jewelry material.