Chrome Sphene

Mineral Group: Titanite Group

Key Properties

Property Value
Mohs Hardness 5.25 (5-5.5)
Typical Size 0.5-10 carats (commercial: 1-5 carats; larger clean stones rare)
Typical Price Range $200-1,500+ per carat (commercial: $400-800; vivid chrome green $1,000-1,500+)
Rarity Level Unique Geological
Availability Level Collectors Market
Availability Driver Limited Deposits
Investment Appropriateness Collector Gems

Pricing

Typical Price
$300.00
per carat
Listing Price
$355.43
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: Chrome-bearing titanite with intense green color. Higher dispersion than diamond. Soft but exceptionally brilliant; collector favorite.

Availability Description: Available through specialty dealers; Baja California and Pakistan sources; softness limits jewelry use but collector demand strong.

Investment Description: Exceptional dispersion and chrome green color; established collector market; softness limits investment potential; specimen and occasional jewelry use.

MODERATELY BULLISH
51.25

Score Components

Geo rarity
85
Mkt availability
85
Invest Appr
0
hardness
5
price
65

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Investment Ranking Calculation

The composite score of 51.25 is calculated using a weighted formula:

  • Geological Rarity (25%): 85 points
  • Market Availability (25%): 85 points
  • Investment Appropriateness (25%): 0 points
  • Hardness (12.5%): 5 points
  • Price Range (12.5%): 65 points

Formula: (85 × 0.25) + (85 × 0.25) + (0 × 0.25) + (5 × 0.125) + (65 × 0.125) = 51.25

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