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Cushion|Lab Grown|IGI

1.57ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG831623571

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG831623571

Diamond specifications and retailer prices

From €197 EUR
$220 USD
As of October 30, 2026
Save €1,119 EUR (85%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €1,316 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 LG831623571 or 831623571. Listed at 13 retailers as of October 30, 2026, with prices from €197 to €1,316, a €1,119 spread on the same certified stone. Brilliant Earth lists it at €1,316. 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 angle33.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831623571
Dimensions7.65 × 6.13 × 4.09 mm
L/W Ratio1.25
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.65 mm6.13 mm1.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831623571
Side View
Table 64.0%Crown 33.1°Girdle: STK-VTKPavilion 40.7°Culet: NoneDepth 66.7%

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: €1,316 EUR|Low: €183 EUR|High: €1,352 EUR|Avg: €544 EUR|+3.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 13€197 EUR
Retailer 11€218 EUR
Retailer 8€280 EUR
Retailer 9€294 EUR
Retailer 6€365 EUR
Retailer 2€398 EUR
Retailer 12€432 EUR
Retailer 10€450 EUR
Retailer 3€748 EUR
Retailer 5€792 EUR
Retailer 7€1,020 EUR
Retailer 4€1,058 EUR
Brilliant Earth€1,316 EUR

40 data points across 13 retailers

13 retailers€197 EUR to €1,316 EUR

A
Cheapest Retailer
-
€197 EUR
$220 USD
Final sale: no returns
Retailer 2
-
€218 EUR
$243 USD
View
Price last confirmed 16 days ago
Retailer 3
-
€280 EUR
£247 GBP
View
Price last confirmed 15 days ago
B+
Retailer 4
-
€294 EUR
$328 USD
View
A
Retailer 5
-
€365 EUR
View
A
Retailer 6
-
€398 EUR
£350 GBP
View
A
Retailer 7
-
€432 EUR
$483 USD
View
A
Retailer 8
-
€450 EUR
$503 USD
View
B
Retailer 9
-
€748 EUR
$836 USD
View
Retailer 10
-
€792 EUR
$885 USD
View
Price last confirmed 31 days ago
B
Retailer 11
-
€1,020 EUR
£897 GBP
View
B
Retailer 12
-
€1,058 EUR
$1,182 USD
View
Most Expensive
B
Brilliant Earth
21679088A · Oct 31
€1,316 EUR
$1,470 USD
View
12 more retailers have this diamond
Prices start from €197 EURSave up to €1,119 EUR

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
€197 EUR