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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 €470 EUR
$525 USD
As of October 31, 2026
Save €3,692 EUR (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €4,162 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 22 retailers as of October 29, 2026, with prices from €470 to €4,162, a €3,692 spread on the same certified stone. Brilliant Earth lists it at €4,162. 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
Color
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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €4,162 EUR|Low: €470 EUR|High: €4,162 EUR|Avg: €1,528 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
October 31, 2026
Retailer 5€470 EUR
Retailer 13€740 EUR
Retailer 2€782 EUR
Retailer 11€806 EUR
Retailer 14€813 EUR
Retailer 10€856 EUR
Retailer 7€894 EUR
Retailer 16€1,212 EUR
Retailer 3€1,262 EUR
Retailer 12€1,613 EUR
Retailer 9€1,614 EUR
Retailer 4€1,700 EUR
Retailer 15€1,836 EUR
Retailer 6€1,922 EUR
Retailer 8€2,614 EUR
Brilliant Earth€4,162 EUR

33 data points across 16 retailers

22 retailers€470 EUR to €4,162 EUR

A
Cheapest Retailer
-
€470 EUR
$525 USD
Final sale: no returns
Retailer 2
-
€520 EUR
$581 USD
View
Price last confirmed 19 days ago
Retailer 3
-
€596 EUR
HK$5,200 HKD
View
Price last confirmed 58 days ago
A
Retailer 4
-
€740 EUR
$827 USD
View
A
Retailer 5
-
€782 EUR
View
A
Retailer 6
-
€806 EUR
$900 USD
View
A
Retailer 7
-
€813 EUR
$908 USD
View
A
Retailer 8
-
€856 EUR
£753 GBP
View
A
Retailer 9
-
€894 EUR
ZAR 16,141 ZAR
View
A
Retailer 10
-
€1,212 EUR
A$2,083 AUD
View
A
Retailer 11
-
€1,262 EUR
$1,410 USD
View
B+
Retailer 12
-
€1,613 EUR
A$2,772 AUD
View
B+
Retailer 13
-
€1,614 EUR
$1,803 USD
View
Retailer 14
-
€1,650 EUR
SGD 2,491 SGD
View
Price last confirmed 21 days ago
B+
Retailer 15
-
€1,700 EUR
$1,899 USD
View
B+
Retailer 16
-
€1,767 EUR
$1,974 USD
View
B+
Retailer 17
-
€1,836 EUR
$2,052 USD
View
B+
Retailer 18
-
€1,922 EUR
£1,691 GBP
View
B+
Retailer 19
-
€2,614 EUR
$2,920 USD
View
Retailer 20
-
€2,658 EUR
$2,970 USD
View
Price last confirmed 17 days ago
B
Retailer 21
-
€4,153 EUR
$4,640 USD
View
Most Expensive
B
Brilliant Earth
12605322A · Oct 29
€4,162 EUR
$4,650 USD
View
21 more retailers have this diamond
Prices start from €470 EURSave up to €3,692 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
€470 EUR