Marquise|Lab Grown|IGI

0.51ct D IF Marquise Lab Grown Diamond

VG • D/IF • IGI LG818658681

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818658681

Diamond specifications and retailer prices

From $165 USD
As of November 1, 2026
Save $865 USD (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,030 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 IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG818658681 or 818658681. Listed at 19 retailers as of November 1, 2026, with prices from $165 to $1,030, a $865 spread on the same certified stone. Reve Diamonds lists it at $1,030. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
D
Color
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818658681
Dimensions8.53 × 4.24 × 2.56 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
8.53 mm4.24 mm0.51 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818658681
Side View
Table 59.0%Crown 33.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 60.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $317 USD|Low: $165 USD|High: $1,030 USD|Avg: $480 USD|+2.4%
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 4$165 USD
Retailer 13$260 USD
Retailer 1$317 USD
Retailer 9$324 USD
Retailer 7$335 USD
Retailer 5$341 USD
Retailer 2$370 USD
Retailer 11$445 USD
Retailer 6$469 USD
Retailer 12$540 USD
Retailer 10$626 USD
Retailer 3$648 USD
Retailer 8$866 USD
Reve Diamonds$1,030 USD

30 data points across 14 retailers

19 retailers$165 USD to $1,030 USD

Retailer 1
-
$149 USD
Price last confirmed 25 days ago
A
Retailer 2
-
$165 USD
View
Final sale: no returns
Retailer 3
-
$172 USD
View
Price last confirmed 34 days ago
Retailer 4
-
$184 USD
View
Price last confirmed 21 days ago
Retailer 5
-
$184 USD
View
Price last confirmed 30 days ago
A
Retailer 6
-
$260 USD
View
A
Retailer 7
-
$317 USD
£249 GBP
View
Retailer 8
-
$324 USD
€309 EUR
View
Price last confirmed 8 days ago
A
Retailer 9
-
$335 USD
ZAR 5,409 ZAR
View
A
Retailer 10
-
$341 USD
View
Retailer 11
-
$370 USD
View
Price last confirmed 9 days ago
A
Retailer 12
-
$445 USD
View
B+
Retailer 13
-
$469 USD
A$722 AUD
View
B+
Retailer 14
-
$540 USD
View
Retailer 15
-
$592 USD
View
Price last confirmed 28 days ago
B+
Retailer 16
-
$626 USD
View
B+
Retailer 17
-
$648 USD
View
B
Retailer 18
-
$866 USD
£682 GBP
View
Most Expensive
B
Reve Diamonds
CFFA71C2E · Nov 1
$1,030 USD
View
18 more retailers have this diamond
Prices start from $165 USDSave up to $865 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
$165 USD