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Cushion|Lab Grown|IGI

1.21ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG779643097

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG779643097

Diamond specifications and retailer prices

From £165 GBP
$221 USD
As of November 1, 2026
Save £721 GBP (81%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £886 GBP at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

About this 1.21ct lab-grown cushion diamond

This 1.21ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG779643097 or 779643097. Listed at 19 retailers as of November 1, 2026, with prices from £165 to £886, a £721 spread on the same certified stone. Reve Diamonds lists it at £886. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG779643097
Dimensions6.08 × 6.08 × 3.78 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.08 mm6.08 mm1.21 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG779643097
Side View
Table 66.0%Crown 35.3°Girdle: STK-THKPavilion 33.8°Culet: NoneDepth 62.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £447 GBP|Low: £165 GBP|High: £866 GBP|Avg: £464 GBP|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 3£165 GBP
Retailer 5£245 GBP
Retailer 9£307 GBP
Retailer 7£316 GBP
Retailer 6£335 GBP
Retailer 10£442 GBP
Retailer 1£447 GBP
Retailer 12£541 GBP
Retailer 2£560 GBP
Retailer 8£649 GBP
Retailer 4£717 GBP
Retailer 11£861 GBP

33 data points across 12 retailers

19 retailers£165 GBP to £886 GBP

A
Cheapest Retailer
-
£165 GBP
$221 USD
Final sale: no returns
Retailer 2
-
£183 GBP
$245 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
£245 GBP
View
B+
Retailer 4
-
£248 GBP
$332 USD
View
A
Retailer 5
-
£307 GBP
€392 EUR
View
A
Retailer 6
-
£316 GBP
ZAR 6,844 ZAR
View
A
Retailer 7
-
£335 GBP
View
A
Retailer 8
-
£347 GBP
$465 USD
View
A
Retailer 9
-
£366 GBP
$490 USD
View
B+
Retailer 10
-
£442 GBP
$592 USD
View
B+
Retailer 11
-
£447 GBP
A$921 AUD
View
B+
Retailer 12
-
£541 GBP
$725 USD
View
B+
Retailer 13
-
£560 GBP
A$1,155 AUD
View
B+
Retailer 14
-
£599 GBP
SGD 1,084 SGD
View
B
Retailer 15
-
£629 GBP
$842 USD
View
B
Retailer 16
-
£649 GBP
$870 USD
View
B
Retailer 17
-
£717 GBP
View
B
Retailer 18
-
£861 GBP
View
Most Expensive
B
Reve Diamonds
227E444CF · Nov 1
£886 GBP
$1,187 USD
View
18 more retailers have this diamond
Prices start from £165 GBPSave up to £721 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
1.21ct Cushion
£165 GBP