Tanzanian Spinel

Mineral Group: Spinel Group

Key Properties

Property Value
Mohs Hardness 8.0 (8)
Typical Size 0.5-15 carats (commercial: 1-8 carats; larger stones available)
Typical Price Range $200-2,000+ per carat (commercial: $500-1,200; Mahenge pink $1,000-2,000+)
Rarity Level Limited Occurrence
Availability Level Collectors Market
Availability Driver Limited Deposits
Investment Appropriateness Emerging Investment Gems

Pricing

Typical Price
N/A
per carat
Listing Price
$132.34
per carat
Sold Price
N/A
per carat
Discount Level
N/A
vs typical

Price Calculator

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Detailed Descriptions

Rarity Description: Spinel from Tanzania including famous Mahenge deposit; hot pink highly valued.

Availability Description: Available through specialty dealers; Mahenge hot pink commands premium.

Investment Description: Mahenge deposit highly regarded; hot pink spinel gaining recognition; good appreciation potential; origin increasingly important.

MODERATELY BULLISH
64.38

Score Components

Geo rarity
65
Mkt availability
85
Invest Appr
75
hardness
0
price
65

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Investment Ranking Calculation

The composite score of 64.38 is calculated using a weighted formula:

  • Geological Rarity (25%): 65 points
  • Market Availability (25%): 85 points
  • Investment Appropriateness (25%): 75 points
  • Hardness (12.5%): 0 points
  • Price Range (12.5%): 65 points

Formula: (65 × 0.25) + (85 × 0.25) + (75 × 0.25) + (0 × 0.125) + (65 × 0.125) = 64.38

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