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Cushion|Lab Grown|IGI

1.05ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG665409443

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG665409443

Diamond specifications and retailer prices

From $363 USD
As of October 28, 2026
Save $1,258 USD (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,850 USD at Brilliant Earth · As of October 12, 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 top-tier cut grade and certified by IGI LG665409443 or 665409443. Listed at 16 retailers as of October 28, 2026, with a 346% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665409443
Dimensions7.00 × 5.27 × 3.53 mm
L/W Ratio1.33
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
7.00 mm5.27 mm1.05 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665409443
Side View
Table 59.0%Crown 32.8°Girdle: STK-THKPavilion 37.3°Culet: NoneDepth 67.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $1,850 USD|Low: $360 USD|High: $1,850 USD|Avg: $968 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
Retailer 15
Retailer 16
October 29, 2026
Retailer 14$363 USD
Retailer 15$610 USD
Retailer 3$641 USD
Retailer 16$643 USD
Retailer 5$653 USD
Retailer 9$672 USD
Retailer 13$691 USD
Retailer 2$719 USD
Retailer 12$977 USD
Retailer 11$1,022 USD
Retailer 4$1,045 USD
Retailer 7$1,338 USD
Retailer 8$1,491 USD
Retailer 6$1,591 USD
Retailer 10$1,621 USD
Brilliant Earth$1,850 USD

39 data points across 16 retailers

16 retailers$363 USD to $1,621 USD

A
Cheapest Retailer
-
$363 USD
Final sale: no returns
A
Retailer 2
-
$610 USD
View
A
Retailer 3
-
$641 USD
View
A
Retailer 4
-
$643 USD
View
A
Retailer 5
-
$653 USD
View
A
Retailer 6
-
$672 USD
€640 EUR
View
A
Retailer 7
-
$691 USD
ZAR 11,166 ZAR
View
A
Retailer 8
-
$719 USD
£566 GBP
View
B+
Retailer 9
-
$977 USD
A$1,503 AUD
View
B+
Retailer 10
-
$1,022 USD
A$1,573 AUD
View
B+
Retailer 11
-
$1,045 USD
View
B+
Retailer 12
-
$1,338 USD
View
B
Retailer 13
-
$1,521 USD
View
B
Retailer 14
-
$1,591 USD
View
B
Retailer 15
-
$1,621 USD
£1,276 GBP
View
Most Expensive
Brilliant Earth
14719488A · Oct 12
$1,850 USD
View
Price last confirmed 17 days ago
15 more retailers have this diamond
Prices start from $363 USDSave up to $1,258 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
$363 USD