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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 $214 USD
As of October 28, 2026
Save $954 USD (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,168 USD at Reve Diamonds · As of October 30, 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 $214 to $1,168, a $954 spread on the same certified stone. Reve Diamonds lists it at $1,168. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $432 USD|Low: $214 USD|High: $1,150 USD|Avg: $581 USD|+4.1%
Retailer 1
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$214 USD
Retailer 10$238 USD
Retailer 5$320 USD
Retailer 4$394 USD
Retailer 1$432 USD
Retailer 3$477 USD
Retailer 11$573 USD
Retailer 7$603 USD
Retailer 8$860 USD
Retailer 6$1,119 USD
Retailer 9$1,120 USD

43 data points across 11 retailers

14 retailers$214 USD to $1,168 USD

A
Cheapest Retailer
-
$214 USD
Final sale: no returns
A
Retailer 2
-
$238 USD
View
B+
Retailer 3
-
$320 USD
View
A
Retailer 4
-
$394 USD
€375 EUR
View
A
Retailer 5
-
$432 USD
£341 GBP
View
A
Retailer 6
-
$477 USD
View
A
Retailer 7
-
$481 USD
View
B+
Retailer 8
-
$573 USD
View
B+
Retailer 9
-
$603 USD
View
B+
Retailer 10
-
$819 USD
View
Retailer 11
-
$860 USD
View
Price last confirmed 8 days ago
Retailer 12
-
$1,119 USD
£881 GBP
View
Price last confirmed 9 days ago
B
Retailer 13
-
$1,120 USD
View
Most Expensive
B
Reve Diamonds
8AED4C9E6 · Oct 30
$1,168 USD
View
13 more retailers have this diamond
Prices start from $214 USDSave up to $954 USD

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
$214 USD