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Cushion|Lab Grown|IGI

3.90ct G VS2 Cushion Lab Grown Diamond

ID • G/VS2 • IGI LG825660379

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG825660379

Diamond specifications and retailer prices

From £884 GBP
$1,184 USD
As of October 30, 2026
Save £2,650 GBP (75%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £3,882 GBP at Taylor and Hart · As of October 14, 2026
View at Taylor and Hart

About this 3.9ct lab-grown cushion diamond

This 3.9ct 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 LG825660379 or 825660379. Listed at 21 retailers as of October 29, 2026, with a 300% 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

3.90
Carat
G
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle42°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825660379
Dimensions10.77 × 8.78 × 5.36 mm
L/W Ratio1.23
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.77 mm8.78 mm3.90 ctG / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825660379
Side View
Table 57.0%Crown 36.1°Girdle: THN-STKPavilion 42°Culet: LargeDepth 61.0%

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 30
Current: £1,541 GBP|Low: £560 GBP|High: £3,882 GBP|Avg: £1,923 GBP|+23.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Taylor and Hart
October 30, 2026
Retailer 7£855 GBP
Retailer 3£884 GBP
Retailer 12£991 GBP
Retailer 4£1,039 GBP
Retailer 10£1,119 GBP
Retailer 9£1,396 GBP
Retailer 1£1,541 GBP
Retailer 5£1,675 GBP
Retailer 8£1,953 GBP
Retailer 2£2,639 GBP
Retailer 11£2,869 GBP
Retailer 6£3,534 GBP
Taylor and Hart£3,882 GBP

33 data points across 13 retailers

21 retailers£884 GBP to £3,534 GBP

Retailer 1
-
£855 GBP
$1,145 USD
Price last confirmed 37 days ago
Retailer 2
-
£855 GBP
$1,145 USD
View
Price last confirmed 19 days ago
A
Retailer 3
-
£884 GBP
$1,184 USD
View
Retailer 4
-
£930 GBP
$1,246 USD
View
Price last confirmed 37 days ago
Retailer 5
-
£978 GBP
$1,310 USD
View
Price last confirmed 31 days ago
Retailer 6
-
£991 GBP
$1,328 USD
View
Price last confirmed 18 days ago
Retailer 7
-
£991 GBP
$1,328 USD
View
Price last confirmed 27 days ago
A
Retailer 8
-
£991 GBP
$1,328 USD
View
A
Retailer 9
-
£1,039 GBP
$1,392 USD
View
Final sale: no returns
A
Retailer 10
-
£1,119 GBP
$1,500 USD
View
A
Retailer 11
-
£1,396 GBP
$1,870 USD
View
B+
Retailer 12
-
£1,541 GBP
View
B+
Retailer 13
-
£1,675 GBP
€2,138 EUR
View
B+
Retailer 14
-
£1,953 GBP
$2,617 USD
View
Retailer 15
-
£2,051 GBP
$2,748 USD
View
Price last confirmed 23 days ago
Retailer 16
-
£2,051 GBP
$2,748 USD
View
Price last confirmed 32 days ago
B
Retailer 17
-
£2,051 GBP
$2,748 USD
View
Retailer 18
-
£2,639 GBP
View
Price last confirmed 16 days ago
B
Retailer 19
-
£2,869 GBP
$3,844 USD
View
B
Retailer 20
-
£3,534 GBP
View
Most Expensive
Taylor and Hart
NWZXZUG · Oct 14
£3,882 GBP
$5,202 USD
View
Price last confirmed 16 days ago
20 more retailers have this diamond
Prices start from £884 GBPSave up to £2,650 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
3.90ct Cushion
£884 GBP