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Cushion|Lab Grown|IGI

1.21ct D VVS2 Cushion Lab Grown Diamond

ID • D/VVS2 • IGI LG783670528

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

Certificate IGI LG783670528

Diamond specifications and retailer prices

From £187 GBP
$251 USD
As of October 30, 2026
Save £969 GBP (84%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,157 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG783670528 or 783670528. Listed at 14 retailers as of October 29, 2026, with prices from £187 to £1,157, a £969 spread on the same certified stone. Brilliant Earth lists it at £1,157. 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
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783670528
Dimensions6.16 × 6.16 × 6.10 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.16 mm6.16 mm1.21 ctD / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783670528
Side View
Table 61.0%Crown 35.2°Girdle: STK-THKPavilion 40°Culet: NoneDepth 68.0%

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: Oct 30
Current: £1,157 GBP|Low: £162 GBP|High: £1,187 GBP|Avg: £534 GBP|-2.5%
Brilliant Earth
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 30, 2026
Retailer 12£187 GBP
Retailer 2£236 GBP
Retailer 7£294 GBP
Retailer 11£302 GBP
Retailer 17£315 GBP
Retailer 10£329 GBP
Retailer 16£375 GBP
Retailer 13£419 GBP
Retailer 6£462 GBP
Retailer 8£469 GBP
Retailer 14£582 GBP
Retailer 15£605 GBP
Retailer 3£619 GBP
Retailer 4£878 GBP
Retailer 5£884 GBP
Retailer 9£910 GBP
Brilliant Earth£1,157 GBP

16 data points across 17 retailers

14 retailers£187 GBP to £1,157 GBP

A
Cheapest Retailer
-
£187 GBP
$251 USD
Final sale: no returns
A
Retailer 2
-
£236 GBP
View
A
Retailer 3
-
£302 GBP
€386 EUR
View
A
Retailer 4
-
£315 GBP
$422 USD
View
A
Retailer 5
-
£329 GBP
View
A
Retailer 6
-
£375 GBP
$502 USD
View
B+
Retailer 7
-
£419 GBP
$562 USD
View
Retailer 8
-
£462 GBP
A$952 AUD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
£582 GBP
A$1,199 AUD
View
B+
Retailer 10
-
£605 GBP
$810 USD
View
B+
Retailer 11
-
£619 GBP
$829 USD
View
B
Retailer 12
-
£878 GBP
$1,176 USD
View
B
Retailer 13
-
£884 GBP
View
Most Expensive
B
Brilliant Earth
18147712A · Oct 29
£1,157 GBP
$1,550 USD
View
13 more retailers have this diamond
Prices start from £187 GBPSave up to £969 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
£187 GBP