Iolite
Cordierite GroupKey Properties
| Property | Value |
|---|---|
| Mohs Hardness | 7.25 (7-7.5) |
| Typical Size | 1-20 carats (commercial: 2-10 carats; larger stones available) |
| Typical Price Range | $30-200 per carat (commercial: $60-120; violet-blue) |
| Rarity Level | Limited Occurrence |
| Availability Level | Readily Available |
| Availability Driver | Readily Available |
| Investment Appropriateness | Fashion/Trend Gems |
Pricing
Typical Price
$90.00
per carat
MC Price
$41.43
per carat
Listing Price
$15.39
per carat
Sold Price
$4.54
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 | - | - |
BEARISH
37.5
Score Components
Geo rarity
65
Mkt availability
35
Invest Appr
25
hardness
25
price
25
Buy This Gem
Detailed Descriptions
Rarity Description: Violet-blue cordierite with strong pleochroism; popular sapphire alternative.
Availability Description: Available through gem dealers; attractive but lesser-known gem.
Investment Description: Attractive sapphire alternative; limited investment potential; fashion-driven market.
Seller Prices
| Seller | Faceted Price | Rough Price | Asking PPC, Faceted | Asking PPC, Rough |
|---|---|---|---|---|
| gemglow | $31.41/ct | - | $45.19/ct | - |
| ucgems | $18.39/ct | - | - | - |
| gemscorner | $15.73/ct | - | - | - |
| gemsofasia | $10.99/ct | - | - | - |
| jintaragems | $10.77/ct | - | $103.77/ct | - |
| preciousgems | $10.50/ct | - | - | - |
| perfectgems | $9.83/ct | - | - | - |
| suchengems | $7.69/ct | - | - | - |
| preciouscarats | $7.64/ct | - | - | - |
| galleria | $6.04/ct | - | $18.58/ct | - |
| sunjz | $5.62/ct | - | $4.00/ct | - |
| gemex | $5.54/ct | - | $29.25/ct | - |
| kohinoordiamonds | $4.10/ct | - | - | - |
| quershianfal | $3.42/ct | - | - | - |
| gemssupplier | $3.29/ct | - | $0.20/ct | - |
| waranyugemsmart | $3.03/ct | - | - | - |
| novajewels | $1.79/ct | - | - | - |
| fakhr | $1.65/ct | - | $2.52/ct | - |
| pakmineralsparadise | $1.10/ct | - | - | - |
| abdul555 | $0.91/ct | - | - | - |
| thegemportal | $0.49/ct | - | - | - |
| sedagems | - | $0.91/ct | - | - |
| parray2023 | - | - | $192.03/ct | - |
| crystal-gems | - | - | $167.67/ct | - |
| ceylonsapphires | - | - | $78.45/ct | - |
| rsagems | - | - | $67.73/ct | - |
| yourgiftstop | - | - | $60.00/ct | - |
| eternia-gems | - | - | $53.02/ct | - |
| intergemcorp | - | - | $39.31/ct | - |
| ranigems | - | - | $21.23/ct | - |
| shahim2015 | - | - | $18.92/ct | - |
| finergems | - | - | $13.11/ct | - |
Price History (Last 3 Years)
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Origin Variants
| Origin | Rarity | Price Multiplier | Multiplier in MC |
|---|---|---|---|
| Burma | Rare | x1.50 | - |
| Sri Lanka | Uncommon | x1.25 | - |
| Madagascar | Uncommon | x1.20 | - |
| India | Common | x1.00 | - |
Color Variants
| Variant | Color | Rarity | Price Multiplier | Multiplier in MC |
|---|---|---|---|---|
| Blue Iolite | Blue | Uncommon | x1.00 | - |
| Blue-Violet Iolite | Blue-Violet | Common | x1.00 | - |
| Light Blue Iolite | Light Blue | Common | x1.00 | - |
| Violet Iolite | Violet | Common | x1.00 | - |
Price Levels of Origin and Color Variants on MC
| Origin | Colour | Clarity | Price Per Carat | # Listings | Avg Weight |
|---|---|---|---|---|---|
| Tanzania | dark violet | Slightly included | $55.80/ct | 5 | 2.74 ct |
| Tanzania | medium dark violet | Slightly to Moderately included | $54.10/ct | 1 | 3.29 ct |
| Tanzania | medium violet | Slightly to Moderately included | $54.04/ct | 2 | 2.35 ct |
| Tanzania | dark violet | Eye clean | $54.00/ct | 1 | 3.16 ct |
| Tanzania | medium violet | Slightly included | $50.58/ct | 2 | 2.04 ct |
| Tanzania | medium dark violet | Eye clean to Slightly included | $49.71/ct | 3 | 1.70 ct |
| Tanzania | medium dark violet | Slightly included | $46.12/ct | 8 | 2.31 ct |
| Tanzania | medium violet | Eye clean to Slightly included | $45.41/ct | 1 | 2.18 ct |
| Tanzania | medium dark bluish purple | Slightly included | $37.17/ct | 1 | 1.85 ct |
| Tanzania | dark violet | Eye clean to Slightly included | $36.00/ct | 2 | 1.74 ct |
| Tanzania | dark violet | Slightly to Moderately included | $36.00/ct | 1 | 2.17 ct |
| Tanzania | medium violet | Eye clean | $35.70/ct | 4 | 2.13 ct |
| Tanzania | dark bluish purple | Eye clean to Slightly included | $33.95/ct | 3 | 1.75 ct |
| Tanzania | dark bluish purple | Slightly included | $33.27/ct | 10 | 1.56 ct |
| Tanzania | dark bluish purple | Moderately included | $32.20/ct | 2 | 1.42 ct |
| Tanzania | medium dark bluish purple | Moderately included | $27.00/ct | 1 | 1.52 ct |
| Tanzania | medium dark violet | Moderately included | $27.00/ct | 3 | 3.67 ct |
| Tanzania | medium dark violet | Eye clean | $25.24/ct | 3 | 1.04 ct |
Current Listings
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Other gems in the Cordierite Group:
| Gem Type | Investment Ranking | Typical Price | Listing Price | Sold Price |
|---|---|---|---|---|
| Iolite | Fashion/Trend Gems | $90.00/ct | $15.39/ct | $4.54/ct |
My Holdings of this gem
You do not have any holdings of this gem type.