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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 €788 EUR
$880 USD
As of October 31, 2026
Save €3,739 EUR (83%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €4,527 EUR 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 €788 to €4,527, a €3,739 spread on the same certified stone. MOH London lists it at €4,527. 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
Color
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
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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 →
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 31
Current: €4,527 EUR|Low: €788 EUR|High: €4,581 EUR|Avg: €2,236 EUR|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 2€788 EUR
Retailer 5€1,357 EUR
Retailer 3€1,407 EUR
Retailer 6€1,562 EUR
Retailer 9€1,788 EUR
Retailer 7€1,931 EUR
Retailer 4€2,223 EUR
Retailer 8€4,029 EUR
MOH London€4,527 EUR

13 data points across 9 retailers

6 retailers€788 EUR to €4,527 EUR

A
Cheapest Retailer
-
€788 EUR
$880 USD
B+
Retailer 2
-
€1,357 EUR
$1,516 USD
View
Final sale: no returns
Retailer 3
-
€1,407 EUR
$1,572 USD
View
Price last confirmed 20 days ago
B
Retailer 4
-
€1,562 EUR
$1,745 USD
View
B
Retailer 5
-
€2,223 EUR
$2,484 USD
View
Most Expensive
B
MOH London
LG425067660 · Oct 27
€4,527 EUR
£3,982 GBP
View
5 more retailers have this diamond
Prices start from €788 EURSave up to €3,739 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
€788 EUR