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Cushion|Lab Grown|IGI

1.77ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG671405868

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG671405868

Diamond specifications and retailer prices

From €472 EUR
$525 USD
As of October 29, 2026
Save €3,706 EUR (89%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €4,178 EUR at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.77ct lab-grown cushion diamond

This 1.77ct 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 LG671405868 or 671405868. Listed at 20 retailers as of October 29, 2026, with prices from €472 to €4,178, a €3,706 spread on the same certified stone. Brilliant Earth lists it at €4,178. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.77
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG671405868
Dimensions8.08 × 6.39 × 4.49 mm
L/W Ratio1.26
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
8.08 mm6.39 mm1.77 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG671405868
Side View
Table 61.0%Crown 34.5°Girdle: MED-STKPavilion 38.8°Culet: NoneDepth 70.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: €4,178 EUR|Low: €472 EUR|High: €4,178 EUR|Avg: €1,421 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
Retailer 16
Retailer 17
October 29, 2026
Retailer 11€472 EUR
Retailer 8€522 EUR
Retailer 7€728 EUR
Retailer 14€728 EUR
Retailer 16€754 EUR
Retailer 10€791 EUR
Retailer 2€864 EUR
Retailer 13€898 EUR
Retailer 15€1,270 EUR
Retailer 4€1,271 EUR
Retailer 6€1,620 EUR
Retailer 9€1,656 EUR
Retailer 3€1,743 EUR
Retailer 17€1,874 EUR
Retailer 12€1,930 EUR
Retailer 5€2,624 EUR
Brilliant Earth€4,178 EUR

35 data points across 17 retailers

20 retailers€472 EUR to €4,178 EUR

A
Cheapest Retailer
-
€472 EUR
$525 USD
Final sale: no returns
A
Retailer 2
-
€522 EUR
$581 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
€598 EUR
HK$5,200 HKD
View
Price last confirmed 55 days ago
A
Retailer 4
-
€728 EUR
$810 USD
View
A
Retailer 5
-
€728 EUR
$810 USD
View
A
Retailer 6
-
€754 EUR
$839 USD
View
A
Retailer 7
-
€791 EUR
View
A
Retailer 8
-
€864 EUR
£757 GBP
View
A
Retailer 9
-
€898 EUR
ZAR 16,141 ZAR
View
A
Retailer 10
-
€1,270 EUR
$1,414 USD
View
A
Retailer 11
-
€1,271 EUR
A$2,177 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
€1,620 EUR
$1,803 USD
View
B+
Retailer 13
-
€1,656 EUR
SGD 2,491 SGD
View
Price last confirmed 18 days ago
B+
Retailer 14
-
€1,743 EUR
$1,940 USD
View
B+
Retailer 15
-
€1,774 EUR
$1,974 USD
View
B+
Retailer 16
-
€1,874 EUR
$2,085 USD
View
B+
Retailer 17
-
€1,930 EUR
£1,691 GBP
View
B+
Retailer 18
-
€2,624 EUR
$2,920 USD
View
B
Retailer 19
-
€2,668 EUR
$2,970 USD
View
Price last confirmed 15 days ago
Most Expensive
B
Brilliant Earth
12605322A · Oct 29
€4,178 EUR
$4,650 USD
View
19 more retailers have this diamond
Prices start from €472 EURSave up to €3,706 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
1.77ct Cushion
€472 EUR