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Cushion|Lab Grown|IGI

1.31ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG776609771

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG776609771

Diamond specifications and retailer prices

From €516 EUR
$577 USD
As of October 30, 2026
Save €1,945 EUR (79%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €2,461 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.31ct lab-grown cushion diamond

This 1.31ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG776609771 or 776609771. Listed at 18 retailers as of October 30, 2026, with prices from €516 to €2,461, a €1,945 spread on the same certified stone. Brilliant Earth lists it at €2,461. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776609771
Dimensions7.51 × 5.71 × 3.94 mm
L/W Ratio1.32
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
7.51 mm5.71 mm1.31 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776609771
Side View
Table 60.0%Crown 35.1°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 69.0%

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 30
Current: €2,461 EUR|Low: €516 EUR|High: €2,685 EUR|Avg: €1,277 EUR|-5.5%
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
Retailer 18
November 1, 2026
Retailer 17€516 EUR
Retailer 10€602 EUR
Retailer 16€630 EUR
Retailer 14€662 EUR
Retailer 3€763 EUR
Retailer 11€871 EUR
Retailer 4€873 EUR
Retailer 2€886 EUR
Retailer 6€887 EUR
Retailer 13€983 EUR
Retailer 12€1,394 EUR
Retailer 9€1,660 EUR
Retailer 18€1,664 EUR
Retailer 8€1,812 EUR
Retailer 5€1,861 EUR
Retailer 7€1,969 EUR
Retailer 15€2,391 EUR
Brilliant Earth€2,461 EUR

40 data points across 18 retailers

18 retailers€516 EUR to €2,461 EUR

A
Cheapest Retailer
-
€516 EUR
$577 USD
Final sale: no returns
Retailer 2
-
€602 EUR
$673 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
€630 EUR
HK$5,500 HKD
View
A
Retailer 4
-
€662 EUR
$740 USD
View
A
Retailer 5
-
€763 EUR
$852 USD
View
A
Retailer 6
-
€871 EUR
View
A
Retailer 7
-
€873 EUR
$975 USD
View
A
Retailer 8
-
€886 EUR
£779 GBP
View
A
Retailer 9
-
€887 EUR
$991 USD
View
A
Retailer 10
-
€983 EUR
ZAR 17,741 ZAR
View
B+
Retailer 11
-
€1,394 EUR
A$2,396 AUD
View
Retailer 12
-
€1,660 EUR
$1,855 USD
View
Price last confirmed 13 days ago
B
Retailer 13
-
€1,664 EUR
£1,464 GBP
View
B
Retailer 14
-
€1,812 EUR
SGD 2,735 SGD
View
B
Retailer 15
-
€1,861 EUR
$2,079 USD
View
B
Retailer 16
-
€1,969 EUR
$2,200 USD
View
B
Retailer 17
-
€2,391 EUR
£2,103 GBP
View
Most Expensive
B
Brilliant Earth
19077250A · Oct 31
€2,461 EUR
$2,750 USD
View
17 more retailers have this diamond
Prices start from €516 EURSave up to €1,945 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
1.31ct Cushion
€516 EUR