Cushion|Lab Grown|IGI

1.05ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG816612616

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

Certificate IGI LG816612616

Diamond specifications and retailer prices

From $339 USD
As of October 28, 2026
Save $1,591 USD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,930 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.05ct lab-grown cushion diamond

This 1.05ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816612616 or 816612616. Listed at 13 retailers as of October 28, 2026, with prices from $339 to $1,930, a $1,591 spread on the same certified stone. Brilliant Earth lists it at $1,930. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
E
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816612616
Dimensions5.94 × 5.81 × 3.95 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
5.94 mm5.81 mm1.05 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816612616
Side View
Table 59.0%Crown 36.1°Girdle: THN-STKPavilion 40.4°Culet: NoneDepth 68.0%

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: $1,930 USD|Low: $276 USD|High: $2,160 USD|Avg: $997 USD|-10.6%
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
October 29, 2026
Retailer 12$339 USD
Retailer 4$422 USD
Retailer 13$615 USD
Retailer 6$616 USD
Retailer 11$636 USD
Retailer 10$640 USD
Retailer 8$647 USD
Retailer 2$667 USD
Retailer 3$1,257 USD
Retailer 5$1,340 USD
Retailer 7$1,516 USD
Retailer 9$1,524 USD
Brilliant Earth$1,930 USD

36 data points across 13 retailers

13 retailers$339 USD to $1,930 USD

A
Cheapest Retailer
-
$339 USD
Final sale: no returns
A
Retailer 2
-
$422 USD
View
A
Retailer 3
-
$615 USD
View
A
Retailer 4
-
$616 USD
€587 EUR
View
A
Retailer 5
-
$636 USD
View
A
Retailer 6
-
$640 USD
View
A
Retailer 7
-
$647 USD
ZAR 10,449 ZAR
View
A
Retailer 8
-
$667 USD
£525 GBP
View
B+
Retailer 9
-
$1,257 USD
View
B+
Retailer 10
-
$1,340 USD
View
Price last confirmed 10 days ago
B+
Retailer 11
-
$1,516 USD
£1,194 GBP
View
B+
Retailer 12
-
$1,524 USD
View
Most Expensive
B
Brilliant Earth
21018568A · Oct 29
$1,930 USD
View
12 more retailers have this diamond
Prices start from $339 USDSave up to $1,591 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
1.05ct Cushion
$339 USD