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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 €345 EUR
$385 USD
As of October 31, 2026
Save €1,106 EUR (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €1,656 EUR 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 29, 2026, with a 321% 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
Colour
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 31
Current: €1,656 EUR|Low: €322 EUR|High: €1,656 EUR|Avg: €822 EUR
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
October 31, 2026
Retailer 8€345 EUR
Retailer 14€546 EUR
Retailer 3€574 EUR
Retailer 15€576 EUR
Retailer 5€584 EUR
Retailer 2€599 EUR
Retailer 13€619 EUR
Retailer 9€638 EUR
Retailer 12€874 EUR
Retailer 11€915 EUR
Retailer 4€935 EUR
Retailer 7€1,197 EUR
Retailer 6€1,424 EUR
Retailer 10€1,451 EUR
Brilliant Earth€1,656 EUR

39 data points across 15 retailers

16 retailers€345 EUR to €1,451 EUR

A
Cheapest Retailer
-
€345 EUR
$385 USD
Final sale: no returns
A
Retailer 2
-
€546 EUR
$610 USD
View
A
Retailer 3
-
€574 EUR
$641 USD
View
A
Retailer 4
-
€576 EUR
$643 USD
View
A
Retailer 5
-
€584 EUR
$653 USD
View
A
Retailer 6
-
€599 EUR
View
A
Retailer 7
-
€619 EUR
ZAR 11,166 ZAR
View
A
Retailer 8
-
€638 EUR
£561 GBP
View
B+
Retailer 9
-
€874 EUR
A$1,503 AUD
View
B+
Retailer 10
-
€915 EUR
A$1,573 AUD
View
B+
Retailer 11
-
€935 EUR
$1,045 USD
View
B
Retailer 12
-
€1,197 EUR
$1,338 USD
View
B
Retailer 13
-
€1,361 EUR
$1,521 USD
View
B
Retailer 14
-
€1,424 EUR
$1,591 USD
View
B
Retailer 15
-
€1,451 EUR
£1,276 GBP
View
Most Expensive
Brilliant Earth
14719488A · Oct 12
€1,656 EUR
$1,850 USD
View
Price last confirmed 19 days ago
15 more retailers have this diamond
Prices start from €345 EURSave up to €1,106 EUR

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
€345 EUR