Grandidierite
Borosilicate GroupKey Properties
| Property | Value |
|---|---|
| Mohs Hardness | 7.5 (7.5) |
| Typical Size | 0.1-5 carats (commercial: 0.25-2 carats; faceted stones over 3 carats are rare) |
| Typical Price Range | $5,000-30,000+ per carat (commercial: $10,000-20,000; faceted stones extremely rare) |
| Rarity Level | Singular Occurrence |
| Availability Level | Museum Grade Rarity |
| Availability Driver | Limited Deposits |
| Investment Appropriateness | Speculative Collector Gems |
Pricing
Typical Price
$800.00
per carat
MC Price
$1861.69
per carat
Listing Price
$611.85
per carat
Sold Price
$8.82
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 | - | - |
BULLISH
78.75
Score Components
Geo rarity
100
Mkt availability
100
Invest Appr
50
hardness
45
price
85
Buy This Gem
Detailed Descriptions
Rarity Description: A very rare blue-green mineral with limited localities; collector-grade gems are scarce.
Availability Description: Sporadic offerings to collectors and museums; rarely seen in retail jewelry markets.
Investment Description: Rare blue-green gem with growing recognition; limited faceted material; strong appreciation in recent years; small but expanding collector market.
Seller Prices
| Seller | Faceted Price | Rough Price | Asking PPC, Faceted | Asking PPC, Rough |
|---|---|---|---|---|
| gemglow | $1929.09/ct | - | $11783.95/ct | - |
| ucgems | $1802.91/ct | - | - | - |
| crysta1gems | $671.22/ct | - | $56.60/ct | - |
| waranyugemsmart | $25.16/ct | - | $59.50/ct | - |
| preciouscarats | $20.37/ct | - | $357.14/ct | - |
| coolncoolgems | $17.59/ct | - | - | - |
| kkljewelsland | $7.75/ct | - | - | - |
| uniqueemerald | $5.91/ct | - | - | - |
| uniquecuts | $5.70/ct | - | - | - |
| novajewels | $4.56/ct | - | - | - |
| facetsprecision | $4.17/ct | - | - | - |
| allsapphires | $4.08/ct | - | - | - |
| puti | $3.98/ct | $0.07/ct | $124.34/ct | $0.48/ct |
| siamesegems | $3.87/ct | - | $146.09/ct | - |
| thedivinegemz | $3.73/ct | - | - | - |
| lapisgems | $3.27/ct | - | $19.94/ct | - |
| inspiregems | $2.46/ct | - | - | - |
| fakhr | $2.26/ct | - | $3.58/ct | - |
| perfectgems | $2.06/ct | - | - | - |
| haniyagemsc | $1.39/ct | - | $100.00/ct | - |
| fawadalikn007 | $1.19/ct | - | $485.67/ct | - |
| galleria | $1.12/ct | - | - | - |
| iahgems | $0.92/ct | - | - | - |
| $0.52/ct | - | - | - | |
| gemskies | - | - | $37878.79/ct | - |
| facetedgems | - | - | $714.93/ct | - |
| mujtabagems | - | - | $607.56/ct | - |
| gemsartisan | - | - | $80.39/ct | - |
| treasurebkk | - | - | $60.14/ct | - |
| beautifulgems | - | - | $46.69/ct | - |
| novingems | - | - | $39.22/ct | - |
| kenya-treasure | - | - | $28.57/ct | - |
Price History (Last 3 Years)
Loading price data...
Origin Variants
| Origin | Rarity | Price Multiplier | Multiplier in MC |
|---|---|---|---|
| Madagascar | Extremely Rare | x3.00 | x1.00 |
Color Variants
| Variant | Color | Rarity | Price Multiplier | Multiplier in MC |
|---|---|---|---|---|
| Blue-Green Grandidierite | Blue-Green | Very Rare | x1.00 | x1.00 |
| Bluish Green Grandidierite | Bluish Green | Very Rare | x1.00 | - |
| Green Grandidierite | Green | Very Rare | x1.00 | - |
Price Levels of Origin and Color Variants on MC
| Origin | Colour | Clarity | Price Per Carat | # Listings | Avg Weight |
|---|---|---|---|---|---|
| Madagascar | medium green-blue | Slightly to Moderately included | $4725.00/ct | 1 | 1.20 ct |
| Madagascar | medium light green blue or blue green | Eye clean to Slightly included | $3152.15/ct | 5 | 0.61 ct |
| Madagascar | very light very slightly greenish blue | Eye clean | $2700.00/ct | 1 | 1.04 ct |
| Madagascar | medium light green-blue | Eye clean to Slightly included | $2552.68/ct | 5 | 1.66 ct |
| Madagascar | medium light green blue or blue green | Eye clean | $2368.47/ct | 14 | 0.66 ct |
| Madagascar | medium light green blue or blue green | Slightly included | $2332.23/ct | 5 | 0.60 ct |
| Madagascar | very light very strongly greenish blue | Eye clean | $2267.64/ct | 2 | 1.50 ct |
| Madagascar | medium dark green blue or blue green | Slightly included | $2016.75/ct | 2 | 1.84 ct |
| Madagascar | light very strongly greenish blue | Slightly to Moderately included | $1982.63/ct | 2 | 0.83 ct |
| Madagascar | light very strongly greenish blue | Eye clean to Slightly included | $1800.00/ct | 1 | 0.32 ct |
| Madagascar | very light very strongly bluish green | Eye clean | $1800.00/ct | 1 | 0.82 ct |
| Madagascar | medium green blue or blue green | Eye clean | $1800.00/ct | 1 | 0.33 ct |
| Madagascar | light very strongly greenish blue | Slightly included | $1713.86/ct | 4 | 0.60 ct |
| Madagascar | light very strongly greenish blue | Eye clean | $1626.09/ct | 2 | 0.34 ct |
| Madagascar | medium green-blue | Eye clean | $1600.00/ct | 1 | 0.59 ct |
| Madagascar | medium green-blue | Eye clean to Slightly included | $1539.53/ct | 1 | 0.86 ct |
| Madagascar | medium dark green blue or blue green | Eye clean | $1515.12/ct | 2 | 0.64 ct |
| Madagascar | very light green-blue | Eye clean | $1500.00/ct | 1 | 0.25 ct |
| Madagascar | medium green blue or blue green | Eye clean to Slightly included | $1500.00/ct | 1 | 0.16 ct |
| Madagascar | medium green-blue | Slightly included | $1440.74/ct | 1 | 0.54 ct |
| Madagascar | very light greenish blue | Moderately included | $1440.36/ct | 1 | 2.23 ct |
| Madagascar | medium light green-blue | Slightly included | $1266.29/ct | 2 | 0.45 ct |
| Madagascar | light greenish blue | Slightly included | $1134.00/ct | 1 | 0.40 ct |
| Madagascar | medium dark green-blue | Eye clean | $1112.24/ct | 1 | 0.67 ct |
| Madagascar | very light very strongly greenish blue | Slightly included | $1080.00/ct | 1 | 0.80 ct |
| Madagascar | medium light green-blue | Eye clean | $1040.33/ct | 19 | 0.48 ct |
| Madagascar | very light green blue or blue green | Slightly included | $720.00/ct | 1 | 0.45 ct |
| Madagascar | medium dark green-blue | Slightly included | $720.00/ct | 1 | 0.69 ct |
| Madagascar | medium dark green blue or blue green | Moderately to Heavily included | $720.00/ct | 1 | 0.62 ct |
| Madagascar | medium dark green blue or blue green | Moderately included | $720.00/ct | 1 | 0.57 ct |
| Madagascar | very light green blue or blue green | Eye clean | $678.47/ct | 15 | 0.32 ct |
| Madagascar | medium dark green blue or blue green | Eye clean to Slightly included | $650.00/ct | 1 | 0.34 ct |
| Madagascar | very light green blue or blue green | Eye clean to Slightly included | $629.81/ct | 2 | 0.27 ct |
| Madagascar | very light very strongly greenish blue | Eye clean to Slightly included | $540.00/ct | 1 | 0.28 ct |
Current Listings
Please sign in to view current listings.
Other gems in the Borosilicate Group:
| Gem Type | Investment Ranking | Typical Price | Listing Price | Sold Price |
|---|---|---|---|---|
| Serendibite | Speculative Collector Gems | $3500.00/ct | $166.26/ct | $124.55/ct |
| Jeremejevite | Speculative Collector Gems | $1500.00/ct | $1198.42/ct | $1919.42/ct |
| Grandidierite | Speculative Collector Gems | $800.00/ct | $611.85/ct | $8.82/ct |
| Axinite | Collector Gems | $80.00/ct | $9.31/ct | $11.89/ct |
My Holdings of this gem
You do not have any holdings of this gem type.