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Round|Lab Grown|IGI

1.50ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG459130933

Shape and cutting style on the report: Round brilliant

Certificate IGI LG459130933

Diamond specifications and retailer prices

From $830 USD
As of November 5, 2026
Save $3,497 USD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,327 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.5ct lab-grown round diamond

This 1.5ct 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 LG459130933 or 459130933. Listed at 12 retailers as of November 1, 2026, with prices from $830 to $4,327, a $3,497 spread on the same certified stone. MOH London lists it at $4,327. 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

1.50
Carat
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.8°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG459130933
Dimensions7.44 × 7.46 × 4.34 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.44 mm7.46 mm1.50 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG459130933
Side View
Table 62.0%Crown 31.8°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 58.2%

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: Nov 5
Current: $4,327 USD|Low: $830 USD|High: $4,385 USD|Avg: $2,019 USD
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
November 5, 2026
Retailer 7$830 USD
Retailer 8$1,161 USD
Retailer 12$1,263 USD
Retailer 14$1,299 USD
Retailer 9$1,347 USD
Retailer 11$1,347 USD
Retailer 3$1,520 USD
Retailer 2$1,751 USD
Retailer 4$1,915 USD
Retailer 10$2,139 USD
Retailer 13$2,525 USD
Retailer 5$2,654 USD
Retailer 6$3,854 USD
MOH London$4,327 USD

40 data points across 14 retailers

12 retailers$830 USD to $4,327 USD

A
Cheapest Retailer
-
$830 USD
B+
Retailer 2
-
$1,161 USD
View
B+
Retailer 3
-
$1,263 USD
View
B+
Retailer 4
-
$1,299 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,347 USD
View
Retailer 6
-
$1,347 USD
View
Price last confirmed 25 days ago
B
Retailer 7
-
$1,520 USD
View
B+
Retailer 8
-
$1,751 USD
View
B
Retailer 9
-
$2,139 USD
View
B
Retailer 10
-
$2,525 USD
View
B
Retailer 11
-
$2,654 USD
View
Most Expensive
B
MOH London
LG459130933 · Nov 1
$4,327 USD
£3,407 GBP
View
11 more retailers have this diamond
Prices start from $830 USDSave up to $3,497 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
1.50ct Round
$830 USD