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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 $1,476 NZD
As of November 5, 2026
Save $6,200 NZD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,677 NZD 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 $1,476 to $7,677, a $6,200 spread on the same certified stone. MOH London lists it at $7,677. 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
Colour
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: $7,677 NZD|Low: $1,476 NZD|High: $7,790 NZD|Avg: $3,283 NZD|-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 6, 2026
Retailer 7$1,476 NZD
Retailer 8$2,065 NZD
Retailer 13$2,247 NZD
Retailer 12$2,313 NZD
Retailer 9$2,396 NZD
Retailer 11$2,396 NZD
Retailer 6$2,615 NZD
Retailer 3$2,704 NZD
Retailer 2$3,118 NZD
Retailer 4$3,407 NZD
Retailer 10$3,805 NZD
Retailer 14$4,492 NZD
Retailer 5$4,721 NZD
MOH London$7,677 NZD

41 data points across 14 retailers

12 retailers$1,476 NZD to $7,677 NZD

A
Cheapest Retailer
-
$1,476 NZD
B+
Retailer 2
-
$2,065 NZD
View
B+
Retailer 3
-
$2,247 NZD
View
B+
Retailer 4
-
$2,313 NZD
View
Final sale: no returns
B+
Retailer 5
-
$2,396 NZD
View
Retailer 6
-
$2,396 NZD
View
Price last confirmed 25 days ago
B
Retailer 7
-
$2,704 NZD
View
B+
Retailer 8
-
$3,118 NZD
View
B
Retailer 9
-
$3,805 NZD
View
B
Retailer 10
-
$4,492 NZD
View
B
Retailer 11
-
$4,721 NZD
View
Most Expensive
B
MOH London
LG447099957 · Nov 5
$7,677 NZD
£3,398 GBP
View
11 more retailers have this diamond
Prices start from $1,476 NZDSave up to $6,200 NZD

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
$1,476 NZD