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Cushion|Lab Grown|IGI

1.66ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG729569332

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG729569332

Diamond specifications and retailer prices

From €628 EUR
$704 USD
As of November 1, 2026
Save €2,306 EUR (79%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €2,933 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.66ct lab-grown cushion diamond

This 1.66ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG729569332 or 729569332. Listed at 20 retailers as of October 31, 2026, with prices from €628 to €2,933, a €2,306 spread on the same certified stone. Brilliant Earth lists it at €2,933. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729569332
Dimensions7.93 × 6.21 × 4.31 mm
L/W Ratio1.28
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
7.93 mm6.21 mm1.66 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729569332
Side View
Table 58.0%Crown 35.8°Girdle: MED-VTKPavilion 40°Culet: NoneDepth 69.4%

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: Nov 1
Current: €2,933 EUR|Low: €628 EUR|High: €2,996 EUR|Avg: €1,547 EUR|-2.1%
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
November 2, 2026
Retailer 10€628 EUR
Retailer 4€652 EUR
Retailer 15€802 EUR
Retailer 7€876 EUR
Retailer 2€1,057 EUR
Retailer 8€1,083 EUR
Retailer 13€1,197 EUR
Retailer 11€1,482 EUR
Retailer 12€1,622 EUR
Retailer 14€1,690 EUR
Retailer 6€2,025 EUR
Retailer 3€2,100 EUR
Retailer 5€2,198 EUR
Retailer 9€2,745 EUR
Brilliant Earth€2,933 EUR

44 data points across 15 retailers

20 retailers€628 EUR to €2,933 EUR

A
Cheapest Retailer
-
€628 EUR
$704 USD
Final sale: no returns
Retailer 2
-
€652 EUR
$731 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
€765 EUR
HK$6,700 HKD
View
A
Retailer 4
-
€802 EUR
$900 USD
View
A
Retailer 5
-
€876 EUR
$982 USD
View
A
Retailer 6
-
€934 EUR
$1,048 USD
View
A
Retailer 7
-
€1,057 EUR
View
A
Retailer 8
-
€1,083 EUR
£956 GBP
View
A
Retailer 9
-
€1,174 EUR
$1,317 USD
View
A
Retailer 10
-
€1,197 EUR
ZAR 21,689 ZAR
View
B+
Retailer 11
-
€1,482 EUR
$1,662 USD
View
B+
Retailer 12
-
€1,622 EUR
A$2,799 AUD
View
Retailer 13
-
€1,690 EUR
$1,895 USD
View
Price last confirmed 12 days ago
B+
Retailer 14
-
€2,025 EUR
£1,788 GBP
View
B+
Retailer 15
-
€2,100 EUR
$2,355 USD
View
B+
Retailer 16
-
€2,198 EUR
SGD 3,332 SGD
View
B
Retailer 17
-
€2,249 EUR
$2,522 USD
View
B
Retailer 18
-
€2,287 EUR
$2,566 USD
View
B
Retailer 19
-
€2,745 EUR
£2,424 GBP
View
Most Expensive
B
Brilliant Earth
15964172A · Oct 31
€2,933 EUR
$3,290 USD
View
19 more retailers have this diamond
Prices start from €628 EURSave up to €2,306 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
1.66ct Cushion
€628 EUR