Emerald

Mineral Group: Beryl Group

Key Properties

Property Value
Mohs Hardness 8.0 (8)
Typical Size 0.25-20 carats (commercial: 0.5-5 carats; clean stones over 10 carats are rare)
Typical Price Range $200-20,000+ per carat (commercial: $500-5,000; fine Colombian stones $5,000-20,000+)
Rarity Level Unique Geological
Availability Level Collectors Market
Availability Driver Limited Investment
Investment Appropriateness Blue Chip Investment Gems

Detailed Descriptions

Rarity Description: Green beryl colored by chromium and/or vanadium; fine quality emeralds from classic localities (Colombia, Zambia) are geologically rare.

Availability Description: Fine emeralds with good clarity are traded through established dealers and auctions; commercial-grade material with typical inclusions is more commonly available.

Investment Description: Colombian and Zambian stones with minimal treatment command premium prices; strong auction presence and international recognition; investment-grade requires good color with acceptable inclusions.

Colors

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Investment Ranking Calculation

The composite score of 86.25 is calculated using a weighted formula:

  • Geological Rarity (25%): 85 points
  • Market Availability (25%): 85 points
  • Investment Appropriateness (25%): 100 points
  • Hardness (12.5%): 65 points
  • Price Range (12.5%): 85 points

Formula: (85 × 0.25) + (85 × 0.25) + (100 × 0.25) + (65 × 0.125) + (85 × 0.125) = 86.25

VERY BULLISH
86.25

Score Components

Geo rarity
85
Mkt availability
85
Invest Appr
100
hardness
65
price
85