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Cushion|Lab Grown|IGI

10.21ct D VVS1 Cushion Lab Grown Diamond

VG • D/VVS1 • IGI LG728582015

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

Certificate IGI LG728582015

Diamond specifications and retailer prices

From £3,742 GBP
As of November 1, 2026
Save £16,257 GBP (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £19,999 GBP at Adiamor · As of October 31, 2026
View at Adiamor

About this 10.21ct lab-grown cushion diamond

This 10.21ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG728582015 or 728582015. Listed at 12 retailers as of October 31, 2026, with prices from £3,742 to £19,999, a £16,257 spread on the same certified stone. Adiamor lists it at £19,999. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

10.21
Carat
D
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle52.3°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728582015
Dimensions11.97 × 11.78 × 7.98 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.97 mm11.78 mm10.21 ctD / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728582015
Side View
Table 67.0%Crown 52.3°Girdle: MED-STKPavilion 33.7°Culet: NoneDepth 67.7%

Caratlytics Score

How it works →
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: £7,954 GBP|Low: £3,741 GBP|High: £10,587 GBP|Avg: £5,715 GBP|-0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 3£3,742 GBP
Retailer 10£4,048 GBP
Retailer 9£4,193 GBP
Retailer 8£4,213 GBP
Retailer 4£5,342 GBP
Retailer 2£5,926 GBP
Retailer 7£6,483 GBP
Retailer 6£6,490 GBP
Retailer 5£7,876 GBP
Retailer 1£7,954 GBP

43 data points across 10 retailers

12 retailers£3,742 GBP to £19,999 GBP

A
Cheapest Retailer
-
£3,742 GBP
A
Retailer 2
-
£4,048 GBP
$5,424 USD
View
Final sale: no returns
Retailer 3
-
£4,193 GBP
$5,618 USD
View
Price last confirmed 20 days ago
A
Retailer 4
-
£4,213 GBP
$5,645 USD
View
B+
Retailer 5
-
£5,342 GBP
View
B+
Retailer 6
-
£5,926 GBP
View
B+
Retailer 7
-
£6,483 GBP
$8,686 USD
View
B+
Retailer 8
-
£6,490 GBP
ZAR 140,489 ZAR
View
B
Retailer 9
-
£7,876 GBP
$10,553 USD
View
B
Retailer 10
-
£7,954 GBP
A$16,396 AUD
View
B
Retailer 11
-
£15,031 GBP
$20,139 USD
View
Most Expensive
B
Adiamor
D-77380323 · Oct 31
£19,999 GBP
$26,796 USD
View
11 more retailers have this diamond
Prices start from £3,742 GBPSave up to £16,257 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
10.21ct Cushion
£3,742 GBP