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Cushion|Lab Grown|IGI

3.10ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG831684278

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG831684278

Diamond specifications and retailer prices

From €2,040 EUR
$2,279 USD
As of October 31, 2026
Save €9,847 EUR (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €11,887 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.1ct lab-grown cushion diamond

This 3.1ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG831684278 or 831684278. Listed at 14 retailers as of October 31, 2026, with prices from €2,040 to €11,887, a €9,847 spread on the same certified stone. Brilliant Earth lists it at €11,887. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.10
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831684278
Dimensions8.33 × 8.32 × 5.22 mm
L/W Ratio1.00
Girdle conditionFaceted
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
8.33 mm8.32 mm3.10 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831684278
Side View
Table 59.0%Crown 35.6°Girdle: MED-THKPavilion 33.7°Culet: NoneDepth 62.7%

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: €11,887 EUR|Low: €2,040 EUR|High: €11,887 EUR|Avg: €4,682 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
November 1, 2026
Retailer 13€2,040 EUR
Retailer 9€2,230 EUR
Retailer 11€2,260 EUR
Retailer 14€2,440 EUR
Retailer 7€2,514 EUR
Retailer 8€2,907 EUR
Retailer 2€3,021 EUR
Retailer 10€3,281 EUR
Retailer 4€4,011 EUR
Retailer 5€4,995 EUR
Retailer 12€5,454 EUR
Retailer 6€5,867 EUR
Retailer 3€7,065 EUR
Brilliant Earth€11,887 EUR

5 data points across 14 retailers

14 retailers€2,040 EUR to €11,887 EUR

A
Cheapest Retailer
-
€2,040 EUR
$2,279 USD
Final sale: no returns
A
Retailer 2
-
€2,230 EUR
$2,491 USD
View
A
Retailer 3
-
€2,260 EUR
$2,525 USD
View
A
Retailer 4
-
€2,440 EUR
HK$21,300 HKD
View
A
Retailer 5
-
€2,514 EUR
£2,212 GBP
View
A
Retailer 6
-
€2,907 EUR
£2,558 GBP
View
A
Retailer 7
-
€3,021 EUR
$3,375 USD
View
A
Retailer 8
-
€3,281 EUR
View
B+
Retailer 9
-
€4,011 EUR
£3,528 GBP
View
B+
Retailer 10
-
€4,995 EUR
ZAR 90,152 ZAR
View
B+
Retailer 11
-
€5,454 EUR
$6,093 USD
View
B+
Retailer 12
-
€5,867 EUR
£5,161 GBP
View
B
Retailer 13
-
€7,065 EUR
SGD 10,666 SGD
View
Most Expensive
B
Brilliant Earth
22341166A · Oct 31
€11,887 EUR
$13,280 USD
View
13 more retailers have this diamond
Prices start from €2,040 EURSave up to €9,847 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
3.10ct Cushion
€2,040 EUR