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Vermont State Gemstone or Gem

Grossular garnet

Grossular garnet: Vermont State Gemstone


Adopted in 1991.

The Vermont State Gem, the Grossular garnet, Ca3Al2(SiO4)3, is technically a mineral - a silicate, which is colored brown due to the presence of iron. Grossular garnet from the Belvidere Mine at Eden Mills is thought to be the finest specimen of its kind anywhere. It was adopted in 1991.

Vermont State Gem: Grossular garnet:

Grossular (also known as grossularite), like other garnets, forms rounded crystals with 12 rhombic or 24 trapezoidal faces or combinations of these and some other forms. This crystal habit is classic for the garnet minerals. Grossular is the calcium aluminum garnet and forms in contact or regional metamorphic enviroments as does andradite the calcium iron garnet. It is believed that these garnets form from the metamorphism of impure siliceous limestones. Grossular has many color possibilities and is probably the most colorful of the garnets. The orange variety is the most common and specimens of orange grossular crusts are prized by many collectors. The green garnets from the Thetford Mines in Quebec, Canada are now considered by many to be uvarovite, or at least a grossular-uvarovite hybrid, whereas the Jeffrey Mine and others are mostly grossular with a chromium-induced tint, "chrome grossular". Hessonite is a red variety of grossular and is also sometimes used as a gem.

There are many interesting beliefs and mystic stories recorded about garnets. Garnet may even protect one from thieves. Normally garnets were exchanged between friends to ensure that they would meet again and to symbolize their affection. Garnets were supposed to hold healing properties, relieving skin conditions, protecting against poisons, and if placed under the pillow, garnet would protect one from bad dreams. Magical properties were assigned in the 13th century when garnet was used in rituals. It was suspose to repel insects and some five hundred years ago, people believed that it would drive away demons.

Characteristics of Grossular Garnet

Pronunciation: GROSS•you•lar GAR•net (accent on capitalized syllable)

  • Appearance: Cinnamon orange (hessonite), pink and emerald green (tsavorite garnet).
  • Luster: vitreous
  • Diaphaneity: translucent; may appear opaque in hand specimen
  • Hardness: 6.5-7.5
  • Specific gravity: 3.5-4.3
  • Cleavage/fracture: none (glassy fracture)
  • Occurrence
    Sri Lanka, Canada, Pakistan, South Africa, Tanzania, Russia and the US. This is a fairly rare garnet.
  • Other distinguishing properties: Forms in 12x-sided equant balls. Commonly found in metamorphic rocks, such as garnet shists. Garnets are commonly used as abrasives and in sand paper, because of their hardness.
  • Uses: abrasive, mineral specimens and as a Gemstone

From Office of the Secretary of State, Vermont Legislative Directory and State Manual, Biennial Session, 1993-1994, p. 25. 

Vermont Law

The law designating the rossular garnet as the official Vermont state gem is found in the Vermont Statutes Online, Title 1, Chapter 11, Section 506.

Title 1: General Provisions
1 V.S.A. ? 506. State gem

? 506. State gem

The state gem shall be the grossular garnet. (Added 1991, No. 221 (Adj. Sess.), ? 1, eff. May 28, 1992.)

State Rocks,
Minerals, & Gems
US State Gemstone or Gems
State symbols represent things that are special to a particular state. Some of these symbols are the Gemstone, Minerals, Rocks. Of the 50 states, 19 have adopted a state gemstone and all have adopted some sort of earth symbol.
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