Rocksday

Chrysoprase vs Variscite

How to tell them apart

Chrysoprase specimen
Chrysoprase

Apple-green chalcedony colored by nickel — the most valuable chalcedony variety.

Photo: Xth-Floor, CC BY-SA 3.0

Variscite specimen
Variscite

An apple-green aluminum phosphate found as nodules and veins, cut like turquoise.

Photo: Didier Descouens, CC BY 3.0

Quick tests

  • Scratch glass: Chrysoprase scratches glass (Mohs 6.5–7); Variscite can't (Mohs 3.5–4.5).

Key differences

  • Chrysoprase is harder and translucent.

Side by side

PropertyChrysopraseVariscite
TypeMineralMineral
Mohs hardness6.5–73.5–4.5
LusterWaxyWaxy to vitreous
StreakWhiteWhite
ColorsGreenGreen
Crystal systemMicrocrystalline quartz (chalcedony)Orthorhombic
Specific gravity2.58–2.642.57–2.61
FormulaSiO₂AlPO₄·2H₂O
Found inQueensland, Australia; PolandFairfield, Utah; Nevada

Properties that are the same for both are grayed out.

How to identify chrysoprase

  • Bright apple to mint green, translucent.
  • Even color with a waxy surface.
  • Scratches glass.

Crystal system: Microcrystalline quartz (chalcedony)

Full Chrysoprase guide →

How to identify variscite

  • Apple to mint green, waxy and opaque.
  • Nodules with yellow and brown rims in Utah material.
  • Softer than jade.

Crystal system: Orthorhombic

Full Variscite guide →

More comparisons

Could you tell them apart from a blurry close-up?

Play today's Rocksday