Rocksday

Grossular

Calcium aluminum garnet in more colors than any other garnet — green tsavorite and cinnamon hessonite are the best known.

Grossular specimen
Photo: Robert M. Lavinsky, CC BY-SA 3.0, via Wikimedia Commons

How to identify grossular

  • Rounded garnet crystals in green, orange, pink or brown.
  • Hardness about 7.
  • Hessonite often looks 'swirly' inside, like syrup in water.

Often confused with

Where it's found

  • Tsavo, Kenya
  • Tanzania
  • Sri Lanka
  • Coahuila, Mexico

Uses

Gemstones.

Rock tumbling

Great for tumbling.

Did you know?

The name comes from the Latin for gooseberry, after its pale green crystals.

Think you could spot it from a blurry close-up?

Play today's Rocksday