Smoky Quartz

Mineral Group: Quartz Group

Key Properties

Property Value
Mohs Hardness 7.0 (7)
Typical Size 1-100+ carats (commercial: 5-50 carats; large clean stones readily available)
Typical Price Range $5-30 per carat (commercial: $10-20; large clean stones readily available)
Rarity Level Abundant Minerals
Availability Level Consistently Available
Availability Driver Consistent Deposits
Investment Appropriateness Non-Investment Gems

Detailed Descriptions

Rarity Description: Brown to gray quartz variety; occurs commonly in pegmatites and alpine veins worldwide.

Availability Description: Readily available in various sizes; common in jewelry and mineral specimen markets at accessible prices.

Investment Description: Abundant variety found worldwide; large clean stones readily available at low prices; no investment value; decorative and affordable jewelry use only.

Colors

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Investment Ranking Calculation

The composite score of 16.25 is calculated using a weighted formula:

  • Geological Rarity (25%): 35 points
  • Market Availability (25%): 10 points
  • Investment Appropriateness (25%): 5 points
  • Hardness (12.5%): 25 points
  • Price Range (12.5%): 5 points

Formula: (35 × 0.25) + (10 × 0.25) + (5 × 0.25) + (25 × 0.125) + (5 × 0.125) = 16.25

VERY BEARISH
16.25

Score Components

Geo rarity
35
Mkt availability
10
Invest Appr
5
hardness
25
price
5