Andesine

Mineral Group: Feldspar Group

Key Properties

Property Value
Mohs Hardness 6.25 (6-6.5)
Typical Size Unknown
Typical Price Range $20-200 per carat (commercial: $50-150; treatment controversy affects pricing)
Rarity Level Limited Occurrence
Availability Level Limited Supply
Availability Driver Treatment Controversy
Investment Appropriateness Non-Investment Gems

Detailed Descriptions

Rarity Description: Plagioclase feldspar; natural red-orange andesine is uncommon, with much commercial material being treated or diffused.

Availability Description: Market presence complicated by treatment controversies; natural material is scarce while treated stones have limited acceptance.

Investment Description: Treatment controversy severely damaged market; natural material scarce; diffused stones have minimal value; no investment potential due to market issues.

Colors

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Investment Ranking Calculation

The composite score of 38.12 is calculated using a weighted formula:

  • Geological Rarity (25%): 65 points
  • Market Availability (25%): 65 points
  • Investment Appropriateness (25%): 5 points
  • Hardness (12.5%): 10 points
  • Price Range (12.5%): 25 points

Formula: (65 × 0.25) + (65 × 0.25) + (5 × 0.25) + (10 × 0.125) + (25 × 0.125) = 38.12

BEARISH
38.12

Score Components

Geo rarity
65
Mkt availability
65
Invest Appr
5
hardness
10
price
25