gemstone

Goldstone

Man-made glass with copper inclusions

Hardness of 5.5 to 6 on the Mohs scale, reddish-brown color, vitreous luster, amorphous crystal structure, exhibits a sparkling metalescence effect.

Identified October 21, 2026More gemstone →

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Physical properties

Hardness of 5.5 to 6 on the Mohs scale, reddish-brown color, vitreous luster, amorphous crystal structure, exhibits a sparkling metalescence effect.

Produced synthetically in a low-oxygen reducing furnace through the crystallization of copper in a glass matrix, invented in 17th-century Venice.

Widely used in affordable jewelry, beads, carvings, and as decorative ornamental stones.

Legend credits its invention to Italian monks, though early archaeological finds suggest similar man-made glasses existed earlier.

Easily identified by its intense, uniform metallic glitter suspended uniformly within a translucent colored glass; not found in nature.

Ammolite

Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)

Gemstone Ring

N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ

Amber

Succinite (Organic Gemstone)

Diamond and Gold Jewelry

Carbon (Diamond) / Au (Gold)

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Pearl necklace

Pearl, primarily aragonite (CaCO₃) and conchiolin