ruby

thumb|upright=1.25|The main ruby-producing countries

AI overview

I don't have enough context to write an accurate overview of ruby. The provided context only shows an image caption about ruby-producing countries, but contains no information about what ruby is, its properties, uses, or significance. I cannot provide a 2-sentence overview without inventing facts, which you've asked me not to do.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Mineral.boxbgcolor: b31b1d
Mineral.boxtextcolor: ffffff
Mineral.name: Ruby
Mineral.image: File:Corundum-215330.jpg
Mineral.caption: A ruby crystal from Dodoma Region, Tanzania
Mineral.category: Oxide minerals
Mineral.IMAstatus: Variety of corundum
Mineral.formula: Aluminum oxide with chromium, AlO:Cr
Mineral.system: Trigonal
Mineral.class: Hexagonal scalenohedral (m) H-M symbol: (2/m)
Mineral.symmetry: Rc
Mineral.color: Orangy red through strongly purplish red.
Mineral.habit: Terminated tabular hexagonal prisms
Mineral.cleavage: No true cleavage
Mineral.fracture: Conchoidal, splintery
Mineral.tenacity: Brittle
Mineral.mohs: 9.0
Mineral.luster: Subadamantine, vitreous, pearly (on partings)

via Wikipedia infobox

Wikidata facts

Image: Ruby - Winza, Tanzania.jpg

Show 5 more facts

Commons category: Ruby
MCN code: 7103.91.00
Mohs' hardness: 9.5
density: 4.045
chemical formula: Al₂O₃

Sources (4)

via Wikidata · CC0

~20 min read

Article

13 sections

Contents

Physical properties
Versus pink sapphire
Occurrence and mining
Factors affecting value
Color
Clarity
Treatments and enhancements
Synthesis and imitation
Records and famous examples
Historical and cultural references
See also
References
External links

thumb|upright=1.25|The main ruby-producing countries

Ruby is a pinkish-red to blood-red gemstone, a variety of the mineral corundum (aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sapphires, and rubies are also sometimes referred to as "red sapphires".