Vietnamese Purple Spinel

Mineral Group: Spinel Group

Key Properties

Property Value
Mohs Hardness 8.0 (8)
Typical Size 0.5-10 carats (commercial: 1-5 carats; larger stones rare and valuable)
Typical Price Range $500-3,000+ per carat (commercial: $800-1,500; finest violet-purple specimens from Vietnam $2,000-3,000+)
Rarity Level Limited Occurrence
Availability Level Collectors Market
Availability Driver Limited Investment
Investment Appropriateness Emerging Investment Gems

Detailed Descriptions

Rarity Description: Rare purple-colored spinel variety from Vietnam; highly prized for its unique vibrant purple color. Limited availability makes it a sought-after collector's gem.

Availability Description: Limited availability through specialized dealers; Vietnamese material highly prized. Growing collector interest but supply remains constrained.

Investment Description: Rare color variety with growing collector recognition; limited supply from Vietnam; spinel durability excellent for jewelry; emerging market with appreciation potential as awareness grows.

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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