Blue Kyanite

Mineral Group: Kyanite Group

Key Properties

Property Value
Mohs Hardness 5.75 (4.5-7)
Typical Size 0.5-10 carats (commercial: 1-5 carats; typically smaller faceted stones)
Typical Price Range $20-200 per carat (commercial: $40-120; faceted material collector grade)
Rarity Level Limited Occurrence
Availability Level Readily Available
Availability Driver Readily Available
Investment Appropriateness Unknown

Detailed Descriptions

Rarity Description: Kyanite forms in metamorphic rocks; gem-quality blue kyanite is collectible but not abundant.

Availability Description: Sold as cabochons and faceted stones in small sizes via specialty dealers; prized for pleochroism in jewelry.

Investment Description: No description available.

Colors

Buy This Gem

Buy on Gem Rock Auctions Buy on Best In Gems

Investment Ranking Calculation

The composite score of 28.75 is calculated using a weighted formula:

  • Geological Rarity (25%): 65 points
  • Market Availability (25%): 35 points
  • Investment Appropriateness (25%): 0 points
  • Hardness (12.5%): 5 points
  • Price Range (12.5%): 25 points

Formula: (65 × 0.25) + (35 × 0.25) + (0 × 0.25) + (5 × 0.125) + (25 × 0.125) = 28.75

VERY BEARISH
28.75

Score Components

Geo rarity
65
Mkt availability
35
Invest Appr
0
hardness
5
price
25