Topaz

Mineral Group: Topaz Group

Key Properties

Property Value
Mohs Hardness 8.0 (8)
Typical Size 1-100+ carats (commercial: 2-30 carats; large stones common)
Typical Price Range $5-500+ per carat (commercial: $10-100; imperial topaz $200-500+)
Rarity Level Common Gemstones
Availability Level Consistently Available
Availability Driver Consistent Deposits
Investment Appropriateness Fashion/Trend Gems

Pricing

Typical Price
$15.00
per carat
Listing Price
$58.37
per carat
Sold Price
$3.28
per carat
Discount Level
0.2
vs typical

Price Calculator

Estimate Type Total Value Price per Carat
Typical Cost - -
Likely Listed Cost - -
Likely Sold Cost - -

Detailed Descriptions

Rarity Description: Aluminum silicate mineral. Generic topaz entry for name matching priority. Blue topaz very common (treated); imperial topaz (orange-pink) is rare and valuable.

Availability Description: Widely available worldwide; Brazil major source; blue topaz abundantly available.

Investment Description: Common gem; blue topaz heavily treated with no investment value; imperial topaz has collector interest.

VERY BEARISH
14.38

Score Components

Geo rarity
0
Mkt availability
10
Invest Appr
25
hardness
0
price
45

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Investment Ranking Calculation

The composite score of 14.38 is calculated using a weighted formula:

  • Geological Rarity (25%): 0 points
  • Market Availability (25%): 10 points
  • Investment Appropriateness (25%): 25 points
  • Hardness (12.5%): 0 points
  • Price Range (12.5%): 45 points

Formula: (0 × 0.25) + (10 × 0.25) + (25 × 0.25) + (0 × 0.125) + (45 × 0.125) = 14.38

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