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Radiant|Lab Grown|IGI

1.56ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG537215993

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG537215993

Diamond specifications and retailer prices

From $323 NZD
$182 USD
As of October 30, 2026
Save $1,518 NZD (82%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,841 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.56ct lab-grown radiant diamond

This 1.56ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG537215993 or 537215993. Listed at 18 retailers as of October 29, 2026, with prices from $323 to $1,841, a $1,518 spread on the same certified stone. MOH London lists it at $1,841. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG537215993
Dimensions8.39 × 5.66 × 3.80 mm
L/W Ratio1.48
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
8.39 mm5.66 mm1.56 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG537215993
Side View
Table 61.0%Crown 32.2°Girdle: MED-STKPavilion 34.3°Culet: NoneDepth 67.1%

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: $1,841 NZD|Low: $303 NZD|High: $1,987 NZD|Avg: $931 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
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 30, 2026
Retailer 12$323 NZD
Retailer 8$392 NZD
Retailer 3$401 NZD
Retailer 11$413 NZD
Retailer 14$516 NZD
Retailer 5$656 NZD
Retailer 13$708 NZD
Retailer 15$725 NZD
Retailer 2$839 NZD
Retailer 9$997 NZD
Retailer 6$1,006 NZD
Retailer 7$1,260 NZD
Retailer 16$1,387 NZD
Retailer 4$1,535 NZD
Retailer 10$1,721 NZD
MOH London$1,841 NZD

38 data points across 16 retailers

18 retailers$323 NZD to $1,841 NZD

A
Cheapest Retailer
-
$323 NZD
$182 USD
A
Retailer 2
-
$367 NZD
$207 USD
View
A
Retailer 3
-
$392 NZD
$221 USD
View
A
Retailer 4
-
$401 NZD
$226 USD
View
A
Retailer 5
-
$413 NZD
$233 USD
View
Final sale: no returns
A
Retailer 6
-
$516 NZD
£229 GBP
View
Retailer 7
-
$656 NZD
€352 EUR
View
Price last confirmed 7 days ago
B+
Retailer 8
-
$708 NZD
$399 USD
View
A
Retailer 9
-
$725 NZD
£322 GBP
View
A
Retailer 10
-
$839 NZD
$473 USD
View
B+
Retailer 11
-
$997 NZD
$562 USD
View
B+
Retailer 12
-
$1,006 NZD
$567 USD
View
B+
Retailer 13
-
$1,260 NZD
$710 USD
View
B
Retailer 14
-
$1,300 NZD
£577 GBP
View
B+
Retailer 15
-
$1,387 NZD
$782 USD
View
Retailer 16
-
$1,535 NZD
$865 USD
View
Price last confirmed 12 days ago
B
Retailer 17
-
$1,721 NZD
$970 USD
View
Most Expensive
B
MOH London
LG537215993 · Oct 29
$1,841 NZD
£817 GBP
View
17 more retailers have this diamond
Prices start from $323 NZDSave up to $1,518 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 Radiant
$323 NZD