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1.51ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG451055596

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451055596

Diamond specifications and retailer prices

From $1,074 SGD
$840 USD
As of October 31, 2026
Save $4,495 SGD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,569 SGD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451055596 or 451055596. Listed at 11 retailers as of October 31, 2026, with prices from $1,074 to $5,569, a $4,495 spread on the same certified stone. MOH London lists it at $5,569. 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

1.51
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055596
Dimensions7.28 × 7.25 × 4.60 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.28 mm7.25 mm1.51 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451055596
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.3%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: $5,569 SGD|Low: $1,074 SGD|High: $5,642 SGD|Avg: $2,725 SGD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 2$1,074 SGD
Retailer 4$1,494 SGD
Retailer 7$1,672 SGD
Retailer 5$1,734 SGD
Retailer 3$1,887 SGD
Retailer 8$1,956 SGD
Retailer 10$2,462 SGD
Retailer 6$2,752 SGD
Retailer 9$3,415 SGD
Retailer 11$4,958 SGD
MOH London$5,569 SGD

17 data points across 11 retailers

11 retailers$1,074 SGD to $5,569 SGD

A
Cheapest Retailer
-
$1,074 SGD
$840 USD
B+
Retailer 2
-
$1,494 SGD
$1,169 USD
View
B+
Retailer 3
-
$1,625 SGD
$1,271 USD
View
B+
Retailer 4
-
$1,672 SGD
$1,308 USD
View
Final sale: no returns
Retailer 5
-
$1,734 SGD
$1,356 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
$1,734 SGD
$1,356 USD
View
B+
Retailer 7
-
$1,956 SGD
$1,530 USD
View
B
Retailer 8
-
$2,752 SGD
$2,153 USD
View
B
Retailer 9
-
$3,248 SGD
$2,541 USD
View
B
Retailer 10
-
$3,415 SGD
$2,671 USD
View
Most Expensive
B
MOH London
LG451055596 · Nov 1
$5,569 SGD
£3,430 GBP
View
10 more retailers have this diamond
Prices start from $1,074 SGDSave up to $4,495 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
1.51ct Round
$1,074 SGD