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1.56ct J SI2 Round Lab Grown Diamond

ID • J/SI2 • IGI LG499191770

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499191770

Diamond specifications and retailer prices

From $1,526 NZD
$860 USD
As of October 30, 2026
Save $6,115 NZD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,641 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.56ct lab-grown round diamond

This 1.56ct 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 LG499191770 or 499191770. Listed at 10 retailers as of October 29, 2026, with prices from $1,526 to $7,641, a $6,115 spread on the same certified stone. MOH London lists it at $7,641. 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

1.56
Carat
J
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499191770
Dimensions7.52 × 7.49 × 4.54 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
7.52 mm7.49 mm1.56 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499191770
Side View
Table 55.0%Crown 32.9°Girdle: THN-MEDPavilion 40.2°Culet: NoneDepth 60.5%

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: $7,641 NZD|Low: $1,526 NZD|High: $7,702 NZD|Avg: $3,802 NZD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 2$1,526 NZD
Retailer 4$2,165 NZD
Retailer 7$2,915 NZD
Retailer 6$3,222 NZD
Retailer 3$3,568 NZD
Retailer 5$4,546 NZD
Retailer 8$5,012 NZD
MOH London$7,641 NZD

12 data points across 8 retailers

10 retailers$1,526 NZD to $7,641 NZD

A
Cheapest Retailer
-
$1,526 NZD
$860 USD
B+
Retailer 2
-
$1,932 NZD
$1,089 USD
View
B+
Retailer 3
-
$2,103 NZD
$1,185 USD
View
B+
Retailer 4
-
$2,165 NZD
$1,220 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,241 NZD
$1,263 USD
View
Retailer 6
-
$2,241 NZD
$1,263 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
$3,568 NZD
$2,011 USD
View
B
Retailer 8
-
$4,202 NZD
$2,368 USD
View
B
Retailer 9
-
$4,546 NZD
$2,562 USD
View
Most Expensive
B
MOH London
LG499191770 · Oct 29
$7,641 NZD
£3,391 GBP
View
9 more retailers have this diamond
Prices start from $1,526 NZDSave up to $6,115 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
1.56ct Round
$1,526 NZD