gemstone
Amethyst Crescent
Quartz (Silicon Dioxide, SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, purple to violet color, vitreous luster, trigonal crystal system, conchoidal fracture, specific gravity of 2.65
Identified More gemstone →
Explore Amethyst Crescent in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 7 on the Mohs scale, purple to violet color, vitreous luster, trigonal crystal system, conchoidal fracture, specific gravity of 2.65
Formation & geological history
Formed in hydrothermal veins and gas cavities (vesicles) in volcanic rocks, commonly associated with basaltic lavas over millions of years
Uses & applications
Used primarily in jewelry making, ornamental carvings, crystal healing, and metaphysical practices
Geological facts
Amethyst was once considered as valuable as diamond, ruby, and emerald until large deposits were discovered in Brazil during the 19th century
Field identification & locations
Easily identified by its distinct purple coloration and conchoidal fracture; found worldwide with major deposits in Brazil, Uruguay, and Zambia
More like this
Other gemstone specimens
Ammolite
Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)
mineral
Gemstone Ring
N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ
gemstone
Amber
Succinite (Organic Gemstone)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Diamond and Gold Jewelry
Carbon (Diamond) / Au (Gold)
gemstone
Pearl necklace
Pearl, primarily aragonite (CaCO₃) and conchiolin
gemstone