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Cushion|Lab Grown|IGI

1.21ct I VVS2 Cushion Lab Grown Diamond

ID • I/VVS2 • IGI LG837623718

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG837623718

Diamond specifications and retailer prices

From £487 GBP
HK$5,100 HKD
As of October 31, 2026
Save £1,107 GBP (69%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,595 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 1.21ct lab-grown cushion diamond

This 1.21ct lab-grown cushion sits in the classic one-carat band, graded I colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG837623718 or 837623718. Listed at 11 retailers as of October 31, 2026, with prices from £487 to £1,595, a £1,107 spread on the same certified stone. Taylor and Hart lists it at £1,595. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
I
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837623718
Dimensions7.81 × 5.79 × 3.72 mm
L/W Ratio1.35
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.81 mm5.79 mm1.21 ctI / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837623718
Side View
Table 53.0%Crown 34.4°Girdle: STK-THKPavilion 36.8°Culet: LargeDepth 64.2%

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: £2,048 GBP|Low: £404 GBP|High: £2,342 GBP|Avg: £965 GBP|+24.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Taylor and Hart
November 1, 2026
Retailer 3£404 GBP
Retailer 10£449 GBP
Retailer 11£474 GBP
Retailer 9£487 GBP
Retailer 5£593 GBP
Retailer 8£601 GBP
Retailer 4£683 GBP
Retailer 7£916 GBP
Retailer 2£1,424 GBP
Retailer 6£1,433 GBP
Taylor and Hart£1,595 GBP
Retailer 1£2,048 GBP

30 data points across 12 retailers

11 retailers£487 GBP to £1,595 GBP

Retailer 1
-
£404 GBP
$541 USD
Price last confirmed 8 days ago
Retailer 2
-
£474 GBP
$635 USD
View
Price last confirmed 37 days ago
B+
Retailer 3
-
£487 GBP
HK$5,100 HKD
View
B+
Retailer 4
-
£593 GBP
$795 USD
View
B+
Retailer 5
-
£601 GBP
$805 USD
View
B+
Retailer 6
-
£683 GBP
€872 EUR
View
B
Retailer 7
-
£916 GBP
ZAR 19,829 ZAR
View
B
Retailer 8
-
£1,424 GBP
SGD 2,578 SGD
View
B
Retailer 9
-
£1,433 GBP
View
Most Expensive
B
Taylor and Hart
V6FK0YB · Oct 31
£1,595 GBP
$2,136 USD
View
9 more retailers have this diamond
Prices start from £487 GBPSave up to £1,107 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+
1.21ct Cushion
£487 GBP