Marquise|Lab Grown|IGI

0.51ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG818662694

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818662694

Diamond specifications and retailer prices

From $315 USD
As of November 1, 2026
Save $1,141 USD (78%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,456 USD at Reve Diamonds · As of November 1, 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 LG818662694 or 818662694. Listed at 19 retailers as of November 1, 2026, with prices from $315 to $1,456, a $1,141 spread on the same certified stone. Reve Diamonds lists it at $1,456. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818662694
Dimensions8.39 × 4.18 × 2.49 mm
L/W Ratio2.01
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
8.39 mm4.18 mm0.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818662694
Side View
Table 58.0%Crown 33.5°Girdle: MED-STKPavilion 39°Culet: NoneDepth 59.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $635 USD|Low: $315 USD|High: $1,518 USD|Avg: $783 USD|-4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Reve Diamonds
November 2, 2026
Retailer 11$315 USD
Retailer 4$374 USD
Retailer 10$388 USD
Retailer 9$492 USD
Retailer 3$495 USD
Retailer 2$609 USD
Retailer 7$617 USD
Retailer 1$635 USD
Retailer 12$690 USD
Retailer 5$840 USD
Retailer 8$1,075 USD
Retailer 13$1,175 USD
Retailer 6$1,402 USD
Reve Diamonds$1,456 USD

37 data points across 14 retailers

19 retailers$315 USD to $1,456 USD

Retailer 1
-
$302 USD
Price last confirmed 24 days ago
A
Retailer 2
-
$315 USD
View
Final sale: no returns
Retailer 3
-
$350 USD
View
Price last confirmed 34 days ago
Retailer 4
-
$369 USD
View
Price last confirmed 37 days ago
Retailer 5
-
$374 USD
View
Price last confirmed 20 days ago
Retailer 6
-
$374 USD
View
Price last confirmed 29 days ago
A
Retailer 7
-
$388 USD
View
B+
Retailer 8
-
$492 USD
View
B+
Retailer 9
-
$495 USD
View
Retailer 10
-
$609 USD
€580 EUR
View
Price last confirmed 7 days ago
B+
Retailer 11
-
$617 USD
£486 GBP
View
B+
Retailer 12
-
$635 USD
ZAR 10,257 ZAR
View
B+
Retailer 13
-
$690 USD
View
Retailer 14
-
$840 USD
View
Price last confirmed 8 days ago
B
Retailer 15
-
$1,075 USD
View
B
Retailer 16
-
$1,175 USD
View
Retailer 17
-
$1,203 USD
View
Price last confirmed 32 days ago
B
Retailer 18
-
$1,402 USD
£1,104 GBP
View
Most Expensive
B
Reve Diamonds
A2873543F · Nov 1
$1,456 USD
View
18 more retailers have this diamond
Prices start from $315 USDSave up to $1,141 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
$315 USD