Indicolite
Mineral Group: Tourmaline Group
Key Properties
| Property | Value |
|---|---|
| Mohs Hardness | 7.25 (7-7.5) |
| Typical Size | 0.5-20 carats (commercial: 1-10 carats; larger clean stones uncommon) |
| Typical Price Range | $200-2,000+ per carat (commercial: $400-1,200; deep saturated blue $1,000-2,000+) |
| Rarity Level | Limited Occurrence |
| Availability Level | Limited Supply |
| Availability Driver | Limited Deposits |
| Investment Appropriateness | Fashion/Trend Gems |
Detailed Descriptions
Rarity Description: Blue tourmaline; occurs less frequently than other tourmaline colors with quality material from limited sources.
Availability Description: Blue tourmaline is desirable and available through gem dealers; finest saturated colors are less common and appeal to collectors.
Investment Description: Blue tourmaline with moderate collector interest; saturated colors command premiums; fashion-driven market with limited investment potential; better for personal collection.
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