Diaspore
Oxide GroupKey Properties
| Property | Value |
|---|---|
| Mohs Hardness | 6.75 (6.5-7) |
| Typical Size | 0.5-10 carats (commercial: 1-5 carats; color-change varieties typically smaller) |
| Typical Price Range | $100-1,000+ per carat (commercial: $200-600; color-change "Zultanite" $400-1,000+) |
| Rarity Level | Limited Occurrence |
| Availability Level | Limited Supply |
| Availability Driver | Limited Deposits |
| Investment Appropriateness | Fashion/Trend Gems |
Pricing
Typical Price
$100.00
per carat
MC Price
$57.77
per carat
Listing Price
$94.83
per carat
Sold Price
$33.29
per carat
My Price
N/A
per carat
Hunt Target Price
N/A
per carat
Price Calculator
| Estimate Type | Total Value | Price per Carat |
|---|---|---|
| Typical Cost | - | - |
| MC Price Cost | - | - |
| GSK Price Cost | - | - |
| Likely Listed Cost | - | - |
| Likely Sold Cost | - | - |
| My Price Cost | - | - |
| Hunt Target Price | - | - |
NEUTRAL
48.12
Score Components
Geo rarity
65
Mkt availability
65
Invest Appr
25
hardness
10
price
65
Buy This Gem
Detailed Descriptions
Rarity Description: Aluminum oxide hydroxide showing color change; gem-quality material is primarily from Turkey and relatively uncommon.
Availability Description: Marketed as 'Zultanite' or 'Csarite' showing color change; available through specialty dealers, primarily from Turkish deposits.
Investment Description: Color-change variety marketed as Zultanite/Csarite; moderate investment potential; primarily Turkish source; fashion-influenced with limited but stable market.
Seller Prices
| Seller | Faceted Price | Rough Price | Asking PPC, Faceted | Asking PPC, Rough |
|---|---|---|---|---|
| shahim2015 | $92.66/ct | - | $78.43/ct | - |
| galleria | $68.90/ct | - | $80.62/ct | - |
| diamonddesire | $56.72/ct | - | $75.64/ct | - |
| mineralscollection | $56.18/ct | - | - | - |
| gemex | $41.36/ct | - | $66.48/ct | - |
| qualitygemsmine | $36.43/ct | - | - | - |
| crysta1gems | $33.54/ct | - | $63.40/ct | - |
| waranyugemsmart | $32.47/ct | - | $71.38/ct | - |
| preciouscarats | $29.58/ct | - | $116.28/ct | - |
| thedivinegemz | $21.93/ct | - | - | - |
| fakhr | $21.10/ct | $1.51/ct | $13.62/ct | $0.87/ct |
| sunjz | $18.60/ct | - | - | - |
| zayangems | $16.78/ct | - | - | - |
| trueblueminerals | $5.71/ct | - | $125.12/ct | - |
| puti | $1.00/ct | - | - | - |
| mineralsmaniastones | - | - | $300.00/ct | - |
| mineralsmarvelgems | - | - | $163.93/ct | - |
| cityofgems-chantburi | - | - | $125.56/ct | - |
| deluxegems | - | - | $115.69/ct | - |
| suchengems | - | - | $110.18/ct | - |
| kohinoordiamonds | - | - | $39.75/ct | - |
| limragems | - | - | $31.76/ct | - |
| beautifulgems | - | - | $23.26/ct | - |
| allgems2025 | - | - | - | $75.59/ct |
Price History (Last 3 Years)
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Origin Variants
| Origin | Rarity | Price Multiplier | Multiplier in MC |
|---|---|---|---|
| Afghanistan | x1.00 | x2.49 | |
| Turkey | x1.00 | x0.90 | |
| Tanzania | x1.00 | x0.87 |
Color Variants
| Variant | Color | Rarity | Price Multiplier | Multiplier in MC |
|---|---|---|---|---|
| Yellow Diaspore | Yellow | Common | x1.00 | x0.90 |
| Champagne Diaspore | Champagne to Pink | Uncommon | x1.00 | - |
| Color-Change Diaspore | Color-Change | Rare | x1.00 | - |
| Green Diaspore | Green | Common | x1.00 | - |
Price Levels of Origin and Color Variants on MC
| Origin | Colour | Clarity | Price Per Carat | # Listings | Avg Weight |
|---|---|---|---|---|---|
| Afghanistan | medium light purple | Eye clean | $144.19/ct | 1 | 2.67 ct |
| Turkey | very light orangy yellow [brownish] | Moderately included | $60.00/ct | 1 | 8.39 ct |
| Turkey | very light orangy yellow [brownish] | Slightly included | $50.29/ct | 12 | 1.76 ct |
| Turkey | very light orangy yellow [brownish] | Moderately to Heavily included | $50.00/ct | 1 | 1.37 ct |
| Tanzania | very light orangy yellow [brownish] | Eye clean | $50.00/ct | 1 | 1.49 ct |
| Turkey | very light orangy yellow [brownish] | Eye clean | $50.00/ct | 4 | 1.57 ct |
| Turkey | very light orangy yellow [brownish] | Eye clean to Slightly included | $50.00/ct | 2 | 1.30 ct |
Current Listings
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Other gems in the Oxide Group:
| Gem Type | Investment Ranking | Typical Price | Listing Price | Sold Price |
|---|---|---|---|---|
| Diaspore | Fashion/Trend Gems | $100.00/ct | $94.83/ct | $33.29/ct |
| Cuprite | Collector Gems | $80.00/ct | - | - |
| Cassiterite | Collector Gems | $25.00/ct | $5.10/ct | $2.00/ct |
| Hematite | Non-Investment Gems | $3.00/ct | $2.15/ct | - |
My Holdings of this gem
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