gemstone

Carnelian

Silicon dioxide with iron oxide inclusions (SiO2)

Hardness of 7 on the Mohs scale, orange to reddish-brown color, vitreous to waxy luster, and microcrystalline trigonal crystal structure.

Identified October 23, 2026More gemstone →

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Physical properties

Hardness of 7 on the Mohs scale, orange to reddish-brown color, vitreous to waxy luster, and microcrystalline trigonal crystal structure.

Formed through the deposition of silica from groundwater in cavities of pre-existing rocks, often in volcanic environments.

Widely used in making polished cabochons, beads, rings, and various carved ornamental items.

Carnelian was highly prized in ancient Egypt as a stone representing the journey to the afterlife and was frequently used in royal signet rings.

Identify by its distinctive translucent orange-red coloration and conchoidal fracture; commonly found in Brazil, India, and Madagascar.

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