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Round|Lab Grown|IGI

1.59ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG440010931

Shape and cutting style on the report: Round brilliant

Certificate IGI LG440010931

Diamond specifications and retailer prices

From $1,561 NZD
$880 USD
As of October 30, 2026
Save $3,070 NZD (66%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,375 NZD at MOH London · As of October 21, 2026
View at MOH London

About this 1.59ct lab-grown round diamond

This 1.59ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG440010931 or 440010931. Listed at 10 retailers as of October 30, 2026, with a 197% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.59
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440010931
Dimensions7.42 × 7.40 × 4.67 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.42 mm7.40 mm1.59 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG440010931
Side View
Table 58.5%Crown 35.4°Girdle: MED-STKPavilion 41.5°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: Oct 30
Current: $7,375 NZD|Low: $1,561 NZD|High: $7,425 NZD|Avg: $3,465 NZD|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2$1,561 NZD
Retailer 4$1,968 NZD
Retailer 7$2,142 NZD
Retailer 9$2,204 NZD
Retailer 5$2,284 NZD
Retailer 11$3,275 NZD
Retailer 6$3,630 NZD
Retailer 8$4,280 NZD
Retailer 10$4,631 NZD
Retailer 3$5,107 NZD
MOH London$7,375 NZD

12 data points across 11 retailers

10 retailers$1,561 NZD to $4,631 NZD

A
Cheapest Retailer
-
$1,561 NZD
$880 USD
B+
Retailer 2
-
$1,968 NZD
$1,109 USD
View
B+
Retailer 3
-
$2,142 NZD
$1,207 USD
View
B+
Retailer 4
-
$2,204 NZD
$1,242 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,284 NZD
$1,287 USD
View
Retailer 6
-
$2,284 NZD
$1,287 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
$3,630 NZD
$2,046 USD
View
B
Retailer 8
-
$4,280 NZD
$2,412 USD
View
B
Retailer 9
-
$4,631 NZD
$2,610 USD
View
Most Expensive
MOH London
LG440010931 · Oct 21
$7,375 NZD
£3,273 GBP
View
Price last confirmed 9 days ago
9 more retailers have this diamond
Prices start from $1,561 NZDSave up to $3,070 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
1.59ct Round
$1,561 NZD