Stibiotantalite
Tantalate GroupKey Properties
| Property | Value |
|---|---|
| Mohs Hardness | 5.5 (5-5.5) |
| Typical Size | 0.5-10 carats (commercial: 1-5 carats; faceted gems very rare) |
| Typical Price Range | $200-1,500+ per carat (commercial: $300-800; yellowish-brown over 2ct $1,000-1,500+) |
| Rarity Level | Unique Geological |
| Availability Level | Museum Grade Rarity |
| Availability Driver | Limited Deposits |
| Investment Appropriateness | Speculative Collector Gems |
Pricing
Typical Price
N/A
per carat
Listing Price
N/A
per carat
Sold Price
$129.45
per carat
My Price
N/A
per carat
Price Calculator
| Estimate Type | Total Value | Price per Carat |
|---|---|---|
| Typical Cost | - | - |
| Likely Listed Cost | - | - |
| Likely Sold Cost | - | - |
| My Price Cost | - | - |
MODERATELY BULLISH
67.5
Score Components
Geo rarity
85
Mkt availability
100
Invest Appr
50
hardness
5
price
65
Buy This Gem
Detailed Descriptions
Rarity Description: Antimony tantalum oxide; yellowish-brown to reddish-brown color. Extremely rare tantalum mineral; high refractive index creates adamantine luster.
Availability Description: Extremely rare in faceted quality; Brazil and Mozambique sources; trades through rare gem specialists; primarily collector specimens.
Investment Description: Extremely rare tantalate mineral; adamantine luster; very limited gem market; high prices but minimal liquidity; primarily for advanced collectors.
Seller Prices
| Seller | Faceted Price | Rough Price |
|---|---|---|
| trustedgems | $129.45/ct | - |
Price History (Last 3 Years)
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Origin Variants
No origin variants found for this gem.
Color Variants
No color variants found for this gem.
Price Levels of Origin and Color Variants on MC
| Origin | Colour | Clarity | Price Per Carat | # Listings | Avg Weight |
|---|---|---|---|---|---|
| Afghanistan | - | Slightly included | $840.30/ct | 1 | 0.67 ct |
| Afghanistan | light greenish yellow | Slightly included | $811.25/ct | 2 | 0.40 ct |
| Afghanistan | light greenish yellow | Eye clean | $661.90/ct | 1 | 0.21 ct |
| Pakistan | very light greenish yellow | Heavily included | $640.04/ct | 2 | 6.73 ct |
Current Listings
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Other gems in the Tantalate Group:
| Gem Type | Investment Ranking | Typical Price | Listing Price | Sold Price |
|---|---|---|---|---|
| Stibiotantalite | Speculative Collector Gems | - | - | $129.45/ct |
My Holdings of this gem
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