Rock Identifier
Ruby and Diamond Ring (Corundum (Al2O3) and Diamond (C)) — gemstone
gemstone

Ruby and Diamond Ring

Corundum (Al2O3) and Diamond (C)

AI-generated identification · may be incorrect

Ruby has a Mohs hardness of 9, red color due to chromium, and adamantine to vitreous luster. Diamond has a Mohs hardness of 10 and isometric crystal structure.

Identified More gemstone →
Explore Ruby and Diamond Ring in the encyclopedia →

Identify your own rocks.

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

Physical properties

Ruby has a Mohs hardness of 9, red color due to chromium, and adamantine to vitreous luster. Diamond has a Mohs hardness of 10 and isometric crystal structure.

Formation & geological history

Rubies form in metamorphic and igneous rocks under high-pressure and high-temperature conditions over millions of years.

Uses & applications

Used primarily in fine jewelry, luxury watches, and high-end timekeeping components.

Geological facts

Ruby is one of the traditional cardinal gemstones, highly valued for its intense red hue and extreme durability.

Field identification & locations

Identified by its distinctive red color, high hardness, and hexagonal crystal habit when rough. Found worldwide, notably in Myanmar, Thailand, and East Africa.