CaratHunter
Plans
Cushion|Lab Grown|IGI

1.57ct I SI1 Cushion Lab Grown Diamond

ID • I/SI1 • IGI LG425067660

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG425067660

Diamond specifications and retailer prices

From $2,476 NZD
$1,390 USD
As of October 28, 2026
Save $6,533 NZD (73%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $9,009 NZD at MOH London · As of October 27, 2026
View at MOH London

About this 1.57ct lab-grown cushion diamond

This 1.57ct lab-grown cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG425067660 or 425067660. Listed at 6 retailers as of October 27, 2026, with prices from $2,476 to $9,009, a $6,533 spread on the same certified stone. MOH London lists it at $9,009. 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

1.57
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle42.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425067660
Dimensions7.18 × 6.73 × 4.55 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
7.18 mm6.73 mm1.57 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG425067660
Side View
Table 58.0%Crown 35°Girdle: STK-THKPavilion 42.5°Culet: NoneDepth 67.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $9,009 NZD|Low: $2,476 NZD|High: $9,118 NZD|Avg: $4,460 NZD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 27, 2026
Retailer 2$2,476 NZD
Retailer 5$2,701 NZD
Retailer 3$2,801 NZD
Retailer 6$3,109 NZD
Retailer 9$3,559 NZD
Retailer 7$3,843 NZD
Retailer 4$4,425 NZD
Retailer 8$8,018 NZD
MOH London$9,009 NZD

12 data points across 9 retailers

6 retailers$2,476 NZD to $9,009 NZD

B+
Cheapest Retailer
-
$2,476 NZD
$1,390 USD
B+
Retailer 2
-
$2,701 NZD
$1,516 USD
View
Final sale: no returns
B+
Retailer 3
-
$2,801 NZD
$1,572 USD
View
Price last confirmed 16 days ago
B
Retailer 4
-
$3,109 NZD
$1,745 USD
View
B
Retailer 5
-
$4,425 NZD
$2,484 USD
View
Most Expensive
B
MOH London
LG425067660 · Oct 27
$9,009 NZD
£3,982 GBP
View
5 more retailers have this diamond
Prices start from $2,476 NZDSave up to $6,533 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.

B+
1.57ct Cushion
$2,476 NZD