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Cushion|Lab Grown|IGI

1.02ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG778640051

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG778640051

Diamond specifications and retailer prices

From $253 USD
As of October 26, 2026
Save $1,357 USD (84%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,610 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG778640051 or 778640051. Listed at 15 retailers as of October 26, 2026, with prices from $253 to $1,610, a $1,357 spread on the same certified stone. Brilliant Earth lists it at $1,610. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.02
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778640051
Dimensions7.24 × 4.93 × 3.46 mm
L/W Ratio1.47
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
7.24 mm4.93 mm1.02 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778640051
Side View
Table 62.0%Crown 37°Girdle: MED-THKPavilion 39.6°Culet: NoneDepth 70.2%

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 26
Current: $1,610 USD|Low: $253 USD|High: $1,660 USD|Avg: $710 USD|-3.0%
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
Retailer 14
Retailer 15
Retailer 16
November 1, 2026
Retailer 3$253 USD
Retailer 15$281 USD
Retailer 10$463 USD
Retailer 4$477 USD
Retailer 11$483 USD
Retailer 8$500 USD
Retailer 6$514 USD
Retailer 9$520 USD
Retailer 5$580 USD
Retailer 12$686 USD
Retailer 14$735 USD
Retailer 16$887 USD
Retailer 7$956 USD
Retailer 2$1,126 USD
Retailer 13$1,275 USD
Brilliant Earth$1,610 USD

42 data points across 16 retailers

15 retailers$253 USD to $1,610 USD

A
Cheapest Retailer
-
$253 USD
Final sale: no returns
Retailer 2
-
$281 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
$463 USD
€441 EUR
View
A
Retailer 4
-
$477 USD
View
A
Retailer 5
-
$483 USD
ZAR 7,800 ZAR
View
A
Retailer 6
-
$514 USD
View
A
Retailer 7
-
$520 USD
£410 GBP
View
A
Retailer 8
-
$580 USD
View
A
Retailer 9
-
$686 USD
A$1,055 AUD
View
A
Retailer 10
-
$735 USD
View
B+
Retailer 11
-
$887 USD
SGD 1,198 SGD
View
B+
Retailer 12
-
$956 USD
View
B+
Retailer 13
-
$1,126 USD
£887 GBP
View
Retailer 14
-
$1,275 USD
View
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
21417353A · Oct 31
$1,610 USD
View
14 more retailers have this diamond
Prices start from $253 USDSave up to $1,357 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
1.02ct Cushion
$253 USD