红宝石

刚玉的一种

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

Article · 中文

红宝石，屬於寶石級剛玉，傳統上作為樞要寶石之一，被用於製作宗教儀式用品和皇室珠寶。红宝石主要成分是氧化铝（Al2O3），红色来自铬（Cr）。自然没有铬的宝石是蓝色的蓝宝石。天然红宝石大多来自亚洲（缅甸、泰国和斯里兰卡）、非洲和澳大利亚，美国蒙大拿州和南卡羅莱納州也有部分生产。天然红宝石非常少见且珍贵，但是人造并非太难，所以工业用红宝石都是人造的。

Abstract from DBpedia / Wikipedia · CC BY-SA