gemstone

Dendritic Agate

Silicon Dioxide (Chalcedony with manganese or iron oxide inclusions)

Mohs hardness of 6.5-7, white or translucent base color with dark fern-like dendritic patterns, waxy to vitreous luster, microcrystalline structure.

Identified October 18, 2026More gemstone →

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

Physical properties

Mohs hardness of 6.5-7, white or translucent base color with dark fern-like dendritic patterns, waxy to vitreous luster, microcrystalline structure.

Formed via hydrothermal solutions depositing silica and metal oxides into cavities within volcanic or sedimentary rocks over millions of years.

Used primarily in lapidary arts, cabochons for jewelry, ornamental carvings, and geological specimen collecting.

Despite the name, dendrites are mineral inclusions rather than fossilized plant matter, often resembling miniature trees.

Identified by translucent chalcedony hosting distinct branching dark inclusions; found globally including in India, Brazil, and the USA.

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