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Round|Lab Grown|IGI

1.50ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG447099957

Shape and cutting style on the report: Round brilliant

Certificate IGI LG447099957

Diamond specifications and retailer prices

From $830 USD
As of November 5, 2026
Save $3,485 USD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,315 USD at MOH London · As of November 5, 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 LG447099957 or 447099957. Listed at 12 retailers as of November 5, 2026, with prices from $830 to $4,315, a $3,485 spread on the same certified stone. MOH London lists it at $4,315. 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 angle36.3°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447099957
Dimensions7.27 × 7.23 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.27 mm7.23 mm1.50 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447099957
Side View
Table 59.5%Crown 36.3°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 63.1%

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 5
Current: $4,315 USD|Low: $830 USD|High: $4,379 USD|Avg: $1,846 USD|-0.3%
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 13$1,263 USD
Retailer 12$1,300 USD
Retailer 9$1,347 USD
Retailer 11$1,347 USD
Retailer 6$1,470 USD
Retailer 3$1,520 USD
Retailer 2$1,751 USD
Retailer 4$1,915 USD
Retailer 10$2,139 USD
Retailer 14$2,525 USD
Retailer 5$2,654 USD
MOH London$4,315 USD

40 data points across 14 retailers

12 retailers$830 USD to $4,315 USD

A
Cheapest Retailer
-
$830 USD
B+
Retailer 2
-
$1,161 USD
View
B+
Retailer 3
-
$1,263 USD
View
B+
Retailer 4
-
$1,300 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
LG447099957 · Nov 5
$4,315 USD
£3,398 GBP
View
11 more retailers have this diamond
Prices start from $830 USDSave up to $3,485 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