Rock Identifier
Amber (Succinite (formula varies, primarily C10H16O)) — Mineraloid (Organic)
Mineraloid (Organic)

Amber

Succinite (formula varies, primarily C10H16O)

Hardness: 2.0-2.5 on Mohs scale; Color: Honey yellow to orange-brown; Luster: Resinous; Crystal structure: Amorphous (non-crystalline); Cleavage: None (conchoidal fracture); Specific gravity: 1.05-1.10 (very light, floats in saltwater).

Hardness
2
Color
Honey yellow to orange-brown
Luster
Resinous
Identified More mineraloid (organic)

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Physical properties

Hardness: 2.0-2.5 on Mohs scale; Color: Honey yellow to orange-brown; Luster: Resinous; Crystal structure: Amorphous (non-crystalline); Cleavage: None (conchoidal fracture); Specific gravity: 1.05-1.10 (very light, floats in saltwater).

Formation & geological history

Formed from the fossilization of tree resin over millions of years (typically 30-90 million years old). It is not tree sap, but a defense mechanism resin that undergoes polymerization under high pressure and temperature in sedimentary layers.

Uses & applications

Used primarily in jewelry (beads, cabochons), high-end carvings, and perfumes. It is also of immense scientific value when it contains prehistoric inclusions like insects or plant matter.

Geological facts

Amber is famous for preserving delicate biological specimens in 3D detail. The largest deposit is in the Baltic region, which accounts for about 90% of the world's amber. It is known to produce static electricity when rubbed with a cloth.

Field identification & locations

Identify in the field by its light weight (it feels warmer and lighter than stone) and its ability to float in a saturated salt-water solution. It can be found in sedimentary deposits or washed up on beaches, particularly in the Baltic Sea region, Dominican Republic, and Myanmar.