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Cushion|Lab Grown|IGI

3.10ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG754594698

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG754594698

Diamond specifications and retailer prices

From £1,753 GBP
$2,349 USD
As of October 30, 2026
Save £8,136 GBP (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £9,889 GBP at Brilliant Earth · As of October 29, 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 LG754594698 or 754594698. Listed at 15 retailers as of October 29, 2026, with prices from £1,753 to £9,889, a £8,136 spread on the same certified stone. Brilliant Earth lists it at £9,889. 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
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594698
Dimensions9.63 × 7.98 × 5.25 mm
L/W Ratio1.21
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
9.63 mm7.98 mm3.10 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594698
Side View
Table 60.0%Crown 34.3°Girdle: MED-STKPavilion 37.3°Culet: NoneDepth 65.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £9,889 GBP|Low: £1,753 GBP|High: £10,975 GBP|Avg: £4,906 GBP|+0.9%
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
October 31, 2026
Retailer 9£1,753 GBP
Retailer 14£2,006 GBP
Retailer 2£2,262 GBP
Retailer 8£2,431 GBP
Retailer 6£2,576 GBP
Retailer 3£2,637 GBP
Retailer 15£3,820 GBP
Retailer 10£4,432 GBP
Retailer 5£4,469 GBP
Retailer 7£4,877 GBP
Retailer 4£4,905 GBP
Retailer 13£5,762 GBP
Retailer 12£5,808 GBP
Retailer 11£6,359 GBP
Brilliant Earth£9,889 GBP

33 data points across 15 retailers

15 retailers£1,753 GBP to £9,889 GBP

A
Cheapest Retailer
-
£1,753 GBP
$2,349 USD
A
Retailer 2
-
£2,006 GBP
HK$21,000 HKD
View
A
Retailer 3
-
£2,262 GBP
View
A
Retailer 4
-
£2,431 GBP
$3,257 USD
View
A
Retailer 5
-
£2,576 GBP
$3,452 USD
View
A
Retailer 6
-
£2,637 GBP
€3,365 EUR
View
B+
Retailer 7
-
£3,820 GBP
ZAR 82,691 ZAR
View
B+
Retailer 8
-
£4,432 GBP
$5,939 USD
View
B+
Retailer 9
-
£4,469 GBP
$5,988 USD
View
Retailer 10
-
£4,877 GBP
$6,535 USD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
£4,905 GBP
View
B+
Retailer 12
-
£5,762 GBP
$7,720 USD
View
B+
Retailer 13
-
£5,808 GBP
SGD 10,516 SGD
View
B
Retailer 14
-
£6,359 GBP
$8,521 USD
View
Most Expensive
B
Brilliant Earth
17981668A · Oct 29
£9,889 GBP
$13,250 USD
View
14 more retailers have this diamond
Prices start from £1,753 GBPSave up to £8,136 GBP

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
£1,753 GBP