Cushion|Lab Grown|IGI

1.05ct E IF Cushion Lab Grown Diamond

VG • E/IF • IGI LG840634725

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840634725

Diamond specifications and retailer prices

From $488 USD
As of October 30, 2026
Save $1,152 USD (70%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,640 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 IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG840634725 or 840634725. Listed at 14 retailers as of October 29, 2026, with prices from $488 to $1,640, a $1,152 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 angle33.9°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840634725
Dimensions7.23 × 5.06 × 3.53 mm
L/W Ratio1.43
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
7.23 mm5.06 mm1.05 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840634725
Side View
Table 62.0%Crown 33.9°Girdle: MED-STKPavilion 36.1°Culet: NoneDepth 69.8%

Caratlytics Score

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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 30
Current: $1,640 USD|Low: $306 USD|High: $1,640 USD|Avg: $835 USD
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 30, 2026
Retailer 5$306 USD
Retailer 13$488 USD
Retailer 8$495 USD
Retailer 14$522 USD
Retailer 2$544 USD
Retailer 7$561 USD
Retailer 12$611 USD
Retailer 9$703 USD
Retailer 4$911 USD
Retailer 6$979 USD
Retailer 10$1,157 USD
Retailer 11$1,315 USD
Retailer 3$1,619 USD
Brilliant Earth$1,640 USD

15 data points across 14 retailers

14 retailers$488 USD to $1,640 USD

Retailer 1
-
$306 USD
£241 GBP
Price last confirmed 13 days ago
A
Retailer 2
-
$488 USD
View
A
Retailer 3
-
$495 USD
ZAR 8,002 ZAR
View
A
Retailer 4
-
$522 USD
View
A
Retailer 5
-
$544 USD
£428 GBP
View
A
Retailer 6
-
$561 USD
€534 EUR
View
A
Retailer 7
-
$611 USD
View
A
Retailer 8
-
$703 USD
A$1,082 AUD
View
B+
Retailer 9
-
$911 USD
SGD 1,231 SGD
View
B+
Retailer 10
-
$979 USD
View
B+
Retailer 11
-
$1,157 USD
£911 GBP
View
Retailer 12
-
$1,315 USD
View
Price last confirmed 11 days ago
B
Retailer 13
-
$1,619 USD
View
Most Expensive
B
Brilliant Earth
22143078A · Oct 29
$1,640 USD
View
13 more retailers have this diamond
Prices start from $488 USDSave up to $1,152 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
$488 USD