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Cushion|Lab Grown|IGI

1.02ct E SI2 Cushion Lab Grown Diamond

ID • E/SI2 • IGI LG831680778

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG831680778

Diamond specifications and retailer prices

From €228 EUR
$255 USD
As of October 30, 2026
Save €61 EUR (21%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €290 EUR at 77 Diamonds · As of October 31, 2026
View at 77 Diamonds

About this 1.02ct lab-grown cushion diamond

This 1.02ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG831680778 or 831680778. Listed at 3 retailers as of October 30, 2026, with prices from €228 to €290, a €61 spread on the same certified stone. 77 Diamonds lists it at €290. 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

1.02
Carat
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831680778
Dimensions5.90 × 5.78 × 3.78 mm
L/W Ratio1.02
Girdle conditionFaceted
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
5.90 mm5.78 mm1.02 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831680778
Side View
Table 68.0%Crown 35.1°Girdle: MED-THKPavilion 38.8°Culet: NoneDepth 65.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: €290 EUR|Low: €228 EUR|High: €290 EUR|Avg: €247 EUR
77 Diamonds
Retailer 2
Retailer 3
October 31, 2026
Retailer 3€228 EUR
Retailer 2€240 EUR
77 Diamonds€290 EUR

2 data points across 3 retailers

3 retailers€228 EUR to €290 EUR

B+
Cheapest Retailer
-
€228 EUR
$255 USD
Retailer 2
-
€240 EUR
$268 USD
View
Most Expensive
B+
77 Diamonds
CUSPUIFSZRJUGDMG · Oct 31
€290 EUR
£255 GBP
View
2 more retailers have this diamond
Prices start from €228 EURSave up to €61 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.

B+
1.02ct Cushion
€228 EUR