Citrine

About it

Yellow to orange quartz. Natural citrine is usually pale and even in colour; most bright orange citrine clusters are heated amethyst, which turns whitish at the base of each point.

Type

Variety

Group

Quartz variety

Formula

SiO2

Hardness (Mohs)

7

Specific gravity

2.65–2.66

Streak

white

Lustre

vitreous (glassy)

Crystal system

Trigonal

Colours

pale yellow, golden yellow, orange, orange-brown

Transparency

transparent, translucent

Cleavage and fracture

none; conchoidal fracture

Typical values: real specimens vary. For more, see mindat.org.