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Variety · Silicate

Ametrine

SiO₂

Part-amethyst, part-citrine quartz, famously from Anahí, Bolivia.

Hardness7
Crystal systemTrigonal
ClassSilicate
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Ametrine specimen

quartz var. ametrine : Anahí Mine (Anay Mine ; Anai Mine), La Gaiba District, Sandoval Province, Santa Cruz Department, Bolivia - crystal : 67 mm — Photo: Parent Géry · Public domain

Ametrine

Also known as: Bolivianite, Trystine.

Ametrine, also known as trystine, golden amethyst, or by the trade name bolivianite, is a variety of quartz with alternating zones of purple and yellow-orange coloration. Its name is a portmanteau of amethyst and citrine. While ametrine is commonly referred to as a combination of these two quartz varieties, some sources claim this is not accurate. Almost all commercially available ametrine is mined in Bolivia.

Intro adapted from Wikipedia (CC BY-SA).

Ametrine is a mineral variety of Quartz, with the chemical formula SiO₂.

It crystallizes in the trigonal crystal system.

Key properties: Mohs hardness 7; typically purple or yellow.

Collections: Gemstones, Rare & Remarkable.

Index entry. This entry combines official IMA/RRUFF species data with published physical-property data and a Wikipedia introduction — a full written entry hasn’t been published yet. Browse more A minerals or help write this entry.