Grossular

Mineral Group: Garnet Group

Key Properties

Property Value
Mohs Hardness 7.25 (7-7.5)
Typical Size 1-15 carats (commercial: 2-8 carats; size varies by color variety)
Typical Price Range $30-300 per carat (commercial: $50-150; varies greatly by color)
Rarity Level Limited Occurrence
Availability Level Readily Available
Availability Driver Readily Available
Investment Appropriateness Fashion/Trend Gems

Detailed Descriptions

Rarity Description: Calcium-aluminum garnet group with varied colors; occurs in metamorphic and contact zones.

Availability Description: Various colors are offered through gem dealers; green tsavorite and orange hessonite are the most commercially significant.

Investment Description: Investment potential varies by variety; tsavorite and hessonite have different markets; generally fashion-driven with moderate collector interest for certain colors.

Colors

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Investment Ranking Calculation

The composite score of 37.5 is calculated using a weighted formula:

  • Geological Rarity (25%): 65 points
  • Market Availability (25%): 35 points
  • Investment Appropriateness (25%): 25 points
  • Hardness (12.5%): 25 points
  • Price Range (12.5%): 25 points

Formula: (65 × 0.25) + (35 × 0.25) + (25 × 0.25) + (25 × 0.125) + (25 × 0.125) = 37.5

BEARISH
37.5

Score Components

Geo rarity
65
Mkt availability
35
Invest Appr
25
hardness
25
price
25