Cushion|Lab Grown|IGI

1.05ct E IF Cushion Lab Grown Diamond

GD • E/IF • IGI LG789611535

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

Certificate IGI LG789611535

Diamond specifications and retailer prices

From $378 USD
As of October 28, 2026
Save $1,307 USD (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,685 USD at MOH London · As of October 26, 2026
View at MOH London

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 standard cut grade and certified by IGI LG789611535 or 789611535. Listed at 15 retailers as of October 26, 2026, with prices from $378 to $1,685, a $1,307 spread on the same certified stone. MOH London lists it at $1,685. 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
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG789611535
Dimensions5.90 × 5.85 × 3.94 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.90 mm5.85 mm1.05 ctE / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG789611535
Side View
Table 61.0%Crown 37.6°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 67.4%

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: $1,685 USD|Low: $378 USD|High: $1,703 USD|Avg: $877 USD|-0.7%
MOH London
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
October 30, 2026
Retailer 5$378 USD
Retailer 11$420 USD
Retailer 13$446 USD
Retailer 14$635 USD
Retailer 4$648 USD
Retailer 7$677 USD
Retailer 8$721 USD
Retailer 10$721 USD
Retailer 6$732 USD
Retailer 2$753 USD
Retailer 9$1,020 USD
Retailer 12$1,315 USD
Retailer 3$1,393 USD
Retailer 15$1,636 USD
MOH London$1,685 USD

23 data points across 15 retailers

15 retailers$378 USD to $1,685 USD

A
Cheapest Retailer
-
$378 USD
Final sale: no returns
A
Retailer 2
-
$420 USD
View
Retailer 3
-
$446 USD
£351 GBP
View
Price last confirmed 13 days ago
B+
Retailer 4
-
$635 USD
View
B+
Retailer 5
-
$648 USD
View
B+
Retailer 6
-
$677 USD
View
A
Retailer 7
-
$721 USD
€687 EUR
View
A
Retailer 8
-
$721 USD
ZAR 11,655 ZAR
View
B+
Retailer 9
-
$732 USD
View
B+
Retailer 10
-
$753 USD
£593 GBP
View
B+
Retailer 11
-
$1,020 USD
A$1,569 AUD
View
Retailer 12
-
$1,315 USD
View
Price last confirmed 11 days ago
B
Retailer 13
-
$1,393 USD
View
B
Retailer 14
-
$1,636 USD
View
Most Expensive
B
MOH London
LG789611535 · Oct 26
$1,685 USD
£1,327 GBP
View
14 more retailers have this diamond
Prices start from $378 USDSave up to $1,307 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
$378 USD