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Marquise|Lab Grown|IGI

0.51ct H SI2 Marquise Lab Grown Diamond

ID • H/SI2 • IGI LG436045436

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436045436

Diamond specifications and retailer prices

From $331 SGD
$259 USD
As of October 30, 2026
Save $1,317 SGD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,648 SGD at MOH London · As of October 26, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436045436 or 436045436. Listed at 11 retailers as of October 26, 2026, with prices from $331 to $1,648, a $1,317 spread on the same certified stone. MOH London lists it at $1,648. 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.9°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436045436
Dimensions7.66 × 4.26 × 2.65 mm
L/W Ratio1.80
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.66 mm4.26 mm0.51 ctH / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436045436
Side View
Table 57.0%Crown 34.9°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.2%

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: Oct 30
Current: $1,648 SGD|Low: $318 SGD|High: $1,666 SGD|Avg: $741 SGD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 7$331 SGD
Retailer 3$371 SGD
Retailer 11$384 SGD
Retailer 2$409 SGD
Retailer 8$410 SGD
Retailer 12$410 SGD
Retailer 10$684 SGD
Retailer 5$772 SGD
Retailer 4$854 SGD
Retailer 6$1,262 SGD
Retailer 9$1,319 SGD
MOH London$1,648 SGD

23 data points across 12 retailers

11 retailers$331 SGD to $1,648 SGD

A
Cheapest Retailer
-
$331 SGD
$259 USD
A
Retailer 2
-
$371 SGD
$290 USD
View
Final sale: no returns
A
Retailer 3
-
$384 SGD
$300 USD
View
A
Retailer 4
-
$409 SGD
$320 USD
View
Retailer 5
-
$410 SGD
$321 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
$410 SGD
$321 USD
View
B
Retailer 7
-
$684 SGD
$535 USD
View
Retailer 8
-
$772 SGD
€575 EUR
View
Price last confirmed 7 days ago
B
Retailer 9
-
$1,262 SGD
$987 USD
View
B
Retailer 10
-
$1,319 SGD
$1,032 USD
View
Most Expensive
B
MOH London
LG436045436 · Oct 26
$1,648 SGD
£1,015 GBP
View
10 more retailers have this diamond
Prices start from $331 SGDSave up to $1,317 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
$331 SGD