Formula: Ca₃Al₂(SiO₄)₃

Species:

Colour: Brown, orange, red, yellow, green, white, colorless, pink

Lustre: Vitreous, Sub-Vitreous

Hardness: 6½ – 7

Specific Gravity: 3.594

Crystal System: Isometric

Member of: Garnet Group > Garnet Supergroup; Andradite-Grossular Series, Grossular-Katoite Series, Grossular-Uvarovite Series, Pyrope-Grossular Series.

Name: Originally named “cinnamon stone” (“Kanelstein” in German) in 1803 by Abraham Gottlob Werner and renamed grossularite by Werner in 1808. Named for the color of gooseberries (Ribes grossularium) as the original specimens were this color.

Type Locality: Akhtaragda River mouth (Achtaragda River mouth), Vilyui River Basin, Mirninsky District, Sakha – Russia