Hauyne

Mineral Group: Sodalite Group

Key Properties

Property Value
Mohs Hardness 5.75 (5.5-6)
Typical Size 0.1-3 carats (commercial: 0.2-1 carats; stones over 1 carat extremely rare)
Typical Price Range $500-3,000+ per carat (commercial: $800-1,500; vivid blue over 1ct $2,000-3,000+)
Rarity Level Unique Geological
Availability Level Museum Grade Rarity
Availability Driver Limited Deposits
Investment Appropriateness Emerging Investment Gems

Pricing

Typical Price
$600.00
per carat
Listing Price
$1767.66
per carat
Sold Price
N/A
per carat
Discount Level
N/A
vs typical

Price Calculator

Estimate Type Total Value Price per Carat
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Detailed Descriptions

Rarity Description: Rare sodium calcium aluminum silicate sulfate. Vivid electric blue color. Extremely rare in gem quality; most stones under 1 carat.

Availability Description: Extremely limited availability; German Eifel region primary source; trades through specialized collectors and rare gem dealers.

Investment Description: One of rarest blue gems; tiny production; established collector market; excellent appreciation for fine specimens; rarity drives value.

BULLISH
73.75

Score Components

Geo rarity
85
Mkt availability
100
Invest Appr
75
hardness
5
price
65

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Investment Ranking Calculation

The composite score of 73.75 is calculated using a weighted formula:

  • Geological Rarity (25%): 85 points
  • Market Availability (25%): 100 points
  • Investment Appropriateness (25%): 75 points
  • Hardness (12.5%): 5 points
  • Price Range (12.5%): 65 points

Formula: (85 × 0.25) + (100 × 0.25) + (75 × 0.25) + (5 × 0.125) + (65 × 0.125) = 73.75

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