Cushion|Lab Grown|IGI

1.05ct E IF Cushion Lab Grown Diamond

VG • E/IF • IGI LG816615873

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG816615873

Diamond specifications and retailer prices

From $288 USD
As of October 25, 2026
Save $1,352 USD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,640 USD at Brilliant Earth · As of October 28, 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 IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG816615873 or 816615873. Listed at 13 retailers as of October 25, 2026, with prices from $288 to $1,640, a $1,352 spread on the same certified stone. Brilliant Earth lists it at $1,640. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.05
Carat
E
Color
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816615873
Dimensions7.12 × 5.13 × 3.54 mm
L/W Ratio1.39
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
7.12 mm5.13 mm1.05 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816615873
Side View
Table 62.0%Crown 35.4°Girdle: THK-VTKPavilion 35.3°Culet: NoneDepth 69.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 25
Current: $1,640 USD|Low: $288 USD|High: $1,690 USD|Avg: $791 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
October 29, 2026
Retailer 10$288 USD
Retailer 7$478 USD
Retailer 3$488 USD
Retailer 8$495 USD
Retailer 6$515 USD
Retailer 2$542 USD
Retailer 4$611 USD
Retailer 9$703 USD
Retailer 13$757 USD
Retailer 14$911 USD
Retailer 5$979 USD
Retailer 11$1,162 USD
Retailer 12$1,315 USD
Brilliant Earth$1,640 USD

41 data points across 14 retailers

13 retailers$288 USD to $1,640 USD

A
Cheapest Retailer
-
$288 USD
A
Retailer 2
-
$478 USD
€455 EUR
View
A
Retailer 3
-
$488 USD
View
A
Retailer 4
-
$495 USD
ZAR 8,002 ZAR
View
A
Retailer 5
-
$542 USD
£427 GBP
View
A
Retailer 6
-
$611 USD
View
A
Retailer 7
-
$703 USD
A$1,082 AUD
View
B+
Retailer 8
-
$757 USD
View
B+
Retailer 9
-
$911 USD
SGD 1,231 SGD
View
B+
Retailer 10
-
$979 USD
View
B+
Retailer 11
-
$1,162 USD
£915 GBP
View
Retailer 12
-
$1,315 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21421474A · Oct 28
$1,640 USD
View
12 more retailers have this diamond
Prices start from $288 USDSave up to $1,352 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
$288 USD