Diaspore
Mineral Group: Oxide Group
Key Properties
| Property | Value |
|---|---|
| Mohs Hardness | 6.75 (6.5-7) |
| Typical Size | Unknown |
| Typical Price Range | $100-1,000+ per carat (commercial: $200-600; color-change "Zultanite" $400-1,000+) |
| Rarity Level | Limited Occurrence |
| Availability Level | Limited Supply |
| Availability Driver | Limited Deposits |
| Investment Appropriateness | Fashion/Trend Gems |
Detailed Descriptions
Rarity Description: Aluminum oxide hydroxide showing color change; gem-quality material is primarily from Turkey and relatively uncommon.
Availability Description: Marketed as 'Zultanite' or 'Csarite' showing color change; available through specialty dealers, primarily from Turkish deposits.
Investment Description: Color-change variety marketed as Zultanite/Csarite; moderate investment potential; primarily Turkish source; fashion-influenced with limited but stable market.
Colors
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Investment Ranking Calculation
The composite score of 48.12 is calculated using a weighted formula:
- Geological Rarity (25%): 65 points
- Market Availability (25%): 65 points
- Investment Appropriateness (25%): 25 points
- Hardness (12.5%): 10 points
- Price Range (12.5%): 65 points
Formula: (65 × 0.25) + (65 × 0.25) + (25 × 0.25) + (10 × 0.125) + (65 × 0.125) = 48.12
NEUTRAL
48.12
Score Components
Geo rarity
65
Mkt availability
65
Invest Appr
25
hardness
10
price
65