Rubellite

Mineral Group: Tourmaline Group

Key Properties

Property Value
Mohs Hardness 7.25 (7-7.5)
Typical Size 0.5-30 carats (commercial: 1-15 carats; clean stones in larger sizes available)
Typical Price Range $200-2,000+ per carat (commercial: $400-1,200; true red without shift $1,200-2,000+)
Rarity Level Limited Occurrence
Availability Level Limited Supply
Availability Driver Limited Deposits
Investment Appropriateness Fashion/Trend Gems

Detailed Descriptions

Rarity Description: Red to pink tourmaline that retains color in all lighting; fine saturated colors are uncommon.

Availability Description: True red-pink tourmaline without color shift is sought by collectors; appears through specialty dealers and high-end jewelers.

Investment Description: True red tourmaline without color shift has collector appeal; moderate market with some appreciation for finest colors; fashion-influenced with trend sensitivity.

Colors

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Investment Ranking Calculation

The composite score of 50.0 is calculated using a weighted formula:

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

Formula: (65 × 0.25) + (65 × 0.25) + (25 × 0.25) + (25 × 0.125) + (65 × 0.125) = 50.0

MODERATELY BULLISH
50.0

Score Components

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