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Marquise|Lab Grown|IGI

0.51ct H SI1 Marquise Lab Grown Diamond

ID • H/SI1 • IGI LG436047203

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436047203

Diamond specifications and retailer prices

From $390 SGD
$305 USD
As of November 2, 2026
Save $1,549 SGD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,939 SGD at MOH London · As of November 1, 2026
View at MOH London

About this 0.51ct lab-grown marquise diamond

This 0.51ct lab-grown marquise sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436047203 or 436047203. Listed at 12 retailers as of November 1, 2026, with prices from $390 to $1,939, a $1,549 spread on the same certified stone. MOH London lists it at $1,939. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436047203
Dimensions7.72 × 4.22 × 2.68 mm
L/W Ratio1.83
Girdle conditionFaceted
Culet sizePointed
Top View
7.72 mm4.22 mm0.51 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436047203
Side View
Table 58.0%Crown 36.3°Girdle: STK-THKPavilion 40.8°Culet: NoneDepth 63.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $1,939 SGD|Low: $375 SGD|High: $1,962 SGD|Avg: $959 SGD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 1, 2026
Retailer 11$390 SGD
Retailer 9$409 SGD
Retailer 3$437 SGD
Retailer 8$440 SGD
Retailer 15$453 SGD
Retailer 12$483 SGD
Retailer 16$483 SGD
Retailer 5$684 SGD
Retailer 14$789 SGD
Retailer 2$885 SGD
Retailer 6$952 SGD
Retailer 10$1,487 SGD
Retailer 13$1,555 SGD
Retailer 4$1,835 SGD
MOH London$1,939 SGD
Retailer 7$1,944 SGD

25 data points across 16 retailers

12 retailers$390 SGD to $1,939 SGD

A
Cheapest Retailer
-
$390 SGD
$305 USD
A
Retailer 2
-
$409 SGD
$320 USD
View
B+
Retailer 3
-
$437 SGD
$342 USD
View
Final sale: no returns
B+
Retailer 4
-
$453 SGD
$354 USD
View
Retailer 5
-
$483 SGD
$378 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$483 SGD
$378 USD
View
B
Retailer 7
-
$789 SGD
$617 USD
View
B
Retailer 8
-
$885 SGD
€659 EUR
View
B
Retailer 9
-
$1,487 SGD
$1,163 USD
View
B
Retailer 10
-
$1,555 SGD
$1,216 USD
View
B
Retailer 11
-
$1,835 SGD
$1,434 USD
View
Most Expensive
B
MOH London
LG436047203 · Nov 1
$1,939 SGD
£1,194 GBP
View
11 more retailers have this diamond
Prices start from $390 SGDSave up to $1,549 SGD

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
$390 SGD