gemstone

Agate

Silicon dioxide (chalcedony, SiO2)

Mohs hardness of 6.5 to 7; exhibits concentric color banding; waxy to vitreous luster; microcrystalline quartz structure.

Identified October 22, 2026More gemstone →

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Physical properties

Mohs hardness of 6.5 to 7; exhibits concentric color banding; waxy to vitreous luster; microcrystalline quartz structure.

Formed by the deposition of silica from groundwater in the cavities of igneous and sedimentary rocks over millions of years.

Widely used in jewelry, ornamental carvings, and precision instruments like mortars and pestles.

Agate was highly prized in ancient civilizations as a talisman and for creating intricate cameo carvings.

Identify by its distinct concentric banding and waxy luster; commonly found in volcanic rock cavities worldwide.

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