gemstone

Carnelian

Silicon dioxide (Chalcedony variety), SiO2

Hardness of 6.5-7 on the Mohs scale, orange to reddish-brown color, waxy to vitreous luster, and microcrystalline structure.

Identified October 19, 2026More gemstone →

Get a report just like this from any photo, free.

Physical properties

Hardness of 6.5-7 on the Mohs scale, orange to reddish-brown color, waxy to vitreous luster, and microcrystalline structure.

Formed through the deposition of silica from groundwater in cavities of rocks, typically in volcanic or sedimentary environments.

Used extensively in making beads, carved gemstones, rings, and talismans throughout history.

Carnelian was highly prized in ancient Egypt and Rome, often used as a signet ring stone because hot wax does not stick to it.

Identified by its distinctive translucent orange-red color and conchoidal fracture, commonly found in India, Brazil, and Uruguay.

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