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Cushion|Lab Grown|IGI

3.10ct G VS2 Cushion Lab Grown Diamond

ID • G/VS2 • IGI LG591312921

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG591312921

Diamond specifications and retailer prices

From £1,358 GBP
$1,820 USD
As of October 31, 2026
Save £3,697 GBP (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £6,573 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 3.1ct lab-grown cushion diamond

This 3.1ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG591312921 or 591312921. Listed at 10 retailers as of October 31, 2026, with a 272% 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
G
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591312921
Dimensions8.76 × 8.33 × 5.56 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.76 mm8.33 mm3.10 ctG / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591312921
Side View
Table 62.0%Crown 32.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 66.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £5,055 GBP|Low: £1,164 GBP|High: £10,008 GBP|Avg: £4,023 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Taylor and Hart
November 1, 2026
Retailer 7£1,358 GBP
Retailer 9£1,630 GBP
Retailer 3£2,588 GBP
Retailer 8£2,644 GBP
Retailer 4£2,788 GBP
Retailer 5£3,351 GBP
Retailer 10£3,560 GBP
Retailer 6£4,590 GBP
Retailer 1£5,055 GBP
Taylor and Hart£6,573 GBP
Retailer 2£10,008 GBP

23 data points across 11 retailers

10 retailers£1,358 GBP to £5,055 GBP

B+
Cheapest Retailer
-
£1,358 GBP
$1,820 USD
B
Retailer 2
-
£2,588 GBP
View
B
Retailer 3
-
£2,644 GBP
$3,542 USD
View
B
Retailer 4
-
£2,788 GBP
CA$5,188 CAD
View
B
Retailer 5
-
£3,351 GBP
$4,490 USD
View
B
Retailer 6
-
£3,560 GBP
View
B
Retailer 7
-
£4,590 GBP
$6,150 USD
View
B
Retailer 8
-
£5,055 GBP
View
Most Expensive
Taylor and Hart
Z1B8B2S · Oct 31
£6,573 GBP
$8,807 USD
View
Price under review
8 more retailers have this diamond
Prices start from £1,358 GBPSave up to £3,697 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.

B+
3.10ct Cushion
£1,358 GBP