Marquise|Lab Grown|IGI

0.51ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG816662575

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG816662575

Diamond specifications and retailer prices

From $232 USD
As of October 30, 2026
Save $1,063 USD (82%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,295 USD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 0.51ct lab-grown marquise diamond

This 0.51ct lab-grown marquise sits in the half to three-quarter carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816662575 or 816662575. Listed at 17 retailers as of October 30, 2026, with prices from $232 to $1,295, a $1,063 spread on the same certified stone. Reve Diamonds lists it at $1,295. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816662575
Dimensions7.84 × 4.24 × 2.68 mm
L/W Ratio1.85
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.84 mm4.24 mm0.51 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816662575
Side View
Table 61.0%Crown 36.5°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 63.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $520 USD|Low: $232 USD|High: $1,303 USD|Avg: $705 USD|-22.4%
Retailer 1
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Retailer 16
Reve Diamonds
October 30, 2026
Retailer 15$232 USD
Retailer 16$259 USD
Retailer 12$269 USD
Retailer 7$284 USD
Retailer 9$288 USD
Retailer 8$390 USD
Retailer 13$485 USD
Retailer 1$520 USD
Retailer 14$575 USD
Retailer 5$575 USD
Retailer 3$604 USD
Retailer 6$925 USD
Retailer 11$1,021 USD
Retailer 2$1,191 USD
Retailer 10$1,244 USD
Retailer 4$1,279 USD
Reve Diamonds$1,295 USD

26 data points across 17 retailers

17 retailers$232 USD to $1,295 USD

A
Cheapest Retailer
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$232 USD
A
Retailer 2
-
$259 USD
View
Final sale: no returns
A
Retailer 3
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$269 USD
View
A
Retailer 4
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$284 USD
View
A
Retailer 5
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$288 USD
View
A
Retailer 6
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$390 USD
View
B+
Retailer 7
-
$485 USD
View
B+
Retailer 8
-
$520 USD
View
B+
Retailer 9
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$575 USD
ZAR 9,282 ZAR
View
B+
Retailer 10
-
$575 USD
View
B+
Retailer 11
-
$604 USD
€575 EUR
View
B
Retailer 12
-
$925 USD
CA$1,285 CAD
View
B
Retailer 13
-
$1,021 USD
View
B
Retailer 14
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$1,191 USD
View
B
Retailer 15
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$1,244 USD
View
B
Retailer 16
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$1,279 USD
£1,007 GBP
View
Most Expensive
B
Reve Diamonds
45B96CC16 · Oct 30
$1,295 USD
View
16 more retailers have this diamond
Prices start from $232 USDSave up to $1,063 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.51ct Marquise
$232 USD