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Cushion|Lab Grown|IGI

3.10ct F VVS1 Cushion Lab Grown Diamond

EX • F/VVS1 • IGI LG821624381

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG821624381

Diamond specifications and retailer prices

From £720 GBP
$965 USD
As of October 26, 2026
Save £1,614 GBP (69%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,993 GBP at Rare Carat · As of October 19, 2026
View at Rare Carat

About this 3.1ct lab-grown cushion diamond

This 3.1ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG821624381 or 821624381. Listed at 16 retailers as of October 26, 2026, with a 224% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46°
Pavilion angle31.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821624381
Dimensions10.49 × 7.38 × 4.65 mm
L/W Ratio1.42
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.49 mm7.38 mm3.10 ctF / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821624381
Side View
Table 65.0%Crown 46°Girdle: MED-STKPavilion 31.2°Culet: NoneDepth 63.0%

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 26
Current: £2,993 GBP|Low: £483 GBP|High: £3,023 GBP|Avg: £1,494 GBP|-1.0%
Rare Carat
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 28, 2026
Retailer 13£483 GBP
Retailer 7£543 GBP
Retailer 2£619 GBP
Retailer 16£720 GBP
Retailer 12£777 GBP
Retailer 15£834 GBP
Retailer 6£1,150 GBP
Retailer 3£1,155 GBP
Retailer 10£1,349 GBP
Retailer 5£1,558 GBP
Retailer 11£1,732 GBP
Retailer 8£1,755 GBP
Retailer 4£1,774 GBP
Retailer 14£2,122 GBP
Retailer 17£2,335 GBP
Retailer 9£2,455 GBP
Rare Carat£2,993 GBP

24 data points across 17 retailers

16 retailers£720 GBP to £2,335 GBP

Retailer 1
-
£543 GBP
$728 USD
Price last confirmed 16 days ago
Retailer 2
-
£619 GBP
$830 USD
View
Price last confirmed 5 days ago
A
Retailer 3
-
£720 GBP
$965 USD
View
A
Retailer 4
-
£777 GBP
€991 EUR
View
A
Retailer 5
-
£834 GBP
View
Retailer 6
-
£1,150 GBP
A$2,371 AUD
View
Price last confirmed 12 days ago
Retailer 7
-
£1,155 GBP
ZAR 25,006 ZAR
View
Price last confirmed 9 days ago
B+
Retailer 8
-
£1,349 GBP
$1,807 USD
View
B+
Retailer 9
-
£1,558 GBP
View
B+
Retailer 10
-
£1,732 GBP
$2,320 USD
View
B+
Retailer 11
-
£1,755 GBP
$2,352 USD
View
B+
Retailer 12
-
£1,774 GBP
$2,377 USD
View
B+
Retailer 13
-
£2,122 GBP
SGD 3,843 SGD
View
B
Retailer 14
-
£2,335 GBP
View
Retailer 15
-
£2,455 GBP
A$5,060 AUD
View
Price last confirmed 24 days ago
Most Expensive
Rare Carat
CN211-36A · Oct 19
£2,993 GBP
$4,010 USD
View
Price last confirmed 14 days ago
15 more retailers have this diamond
Prices start from £720 GBPSave up to £1,614 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
£720 GBP