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Cushion|Lab Grown|IGI

1.57ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG526288477

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG526288477

Diamond specifications and retailer prices

From $381 NZD
$214 USD
As of October 28, 2026
Save $1,698 NZD (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,079 NZD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG526288477 or 526288477. Listed at 14 retailers as of October 28, 2026, with prices from $381 to $2,079, a $1,698 spread on the same certified stone. Reve Diamonds lists it at $2,079. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle31.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG526288477
Dimensions6.82 × 6.39 × 4.03 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.82 mm6.39 mm1.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG526288477
Side View
Table 67.0%Crown 36.5°Girdle: STK-THKPavilion 31.1°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 28
Current: $769 NZD|Low: $381 NZD|High: $2,048 NZD|Avg: $1,034 NZD|+4.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 2$381 NZD
Retailer 10$424 NZD
Retailer 5$570 NZD
Retailer 4$701 NZD
Retailer 1$769 NZD
Retailer 3$849 NZD
Retailer 11$1,020 NZD
Retailer 7$1,074 NZD
Retailer 8$1,531 NZD
Retailer 6$1,992 NZD
Retailer 9$1,994 NZD

42 data points across 11 retailers

14 retailers$381 NZD to $2,079 NZD

A
Cheapest Retailer
-
$381 NZD
$214 USD
Final sale: no returns
A
Retailer 2
-
$424 NZD
$238 USD
View
B+
Retailer 3
-
$570 NZD
$320 USD
View
A
Retailer 4
-
$701 NZD
€375 EUR
View
A
Retailer 5
-
$769 NZD
£340 GBP
View
A
Retailer 6
-
$849 NZD
$477 USD
View
A
Retailer 7
-
$856 NZD
$481 USD
View
B+
Retailer 8
-
$1,020 NZD
$573 USD
View
B+
Retailer 9
-
$1,074 NZD
$603 USD
View
B+
Retailer 10
-
$1,458 NZD
$819 USD
View
B+
Retailer 11
-
$1,531 NZD
$860 USD
View
Price last confirmed 8 days ago
B
Retailer 12
-
$1,992 NZD
£881 GBP
View
Price last confirmed 8 days ago
B
Retailer 13
-
$1,994 NZD
$1,120 USD
View
Most Expensive
B
Reve Diamonds
8AED4C9E6 · Oct 28
$2,079 NZD
$1,168 USD
View
13 more retailers have this diamond
Prices start from $381 NZDSave up to $1,698 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
1.57ct Cushion
$381 NZD