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Cushion|Lab Grown|IGI

6.21ct D IF Cushion Lab Grown Diamond

VG • D/IF • IGI LG835695999

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

Certificate IGI LG835695999

Diamond specifications and retailer prices

From £13,279 GBP
$17,793 USD
As of November 1, 2026
Save £27,506 GBP (67%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £40,785 GBP at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 6.21ct lab-grown cushion diamond

This 6.21ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG835695999 or 835695999. Listed at 12 retailers as of October 27, 2026, with prices from £13,279 to £40,785, a £27,506 spread on the same certified stone. Wholesale Diamonds Direct lists it at £40,785. 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

6.21
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG835695999
Dimensions10.70 × 10.58 × 6.99 mm
L/W Ratio1.01
Girdle conditionFaceted
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
10.70 mm10.58 mm6.21 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG835695999
Side View
Table 63.0%Crown 39.8°Girdle: MED-THKPavilion 38°Culet: NoneDepth 66.1%

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: Nov 1
Current: £22,941 GBP|Low: £13,279 GBP|High: £40,785 GBP|Avg: £24,476 GBP|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
November 1, 2026
Retailer 2£13,279 GBP
Retailer 4£15,992 GBP
Retailer 9£17,969 GBP
Retailer 6£19,517 GBP
Retailer 1£22,941 GBP
Retailer 3£24,301 GBP
Retailer 5£24,806 GBP
Retailer 10£26,392 GBP
Retailer 7£28,263 GBP
Retailer 8£35,894 GBP
Wholesale Diamonds Direct£40,785 GBP

9 data points across 11 retailers

12 retailers£13,279 GBP to £40,785 GBP

B+
Cheapest Retailer
-
£13,279 GBP
$17,793 USD
B+
Retailer 2
-
£15,992 GBP
View
B+
Retailer 3
-
£17,969 GBP
$24,076 USD
View
B+
Retailer 4
-
£19,517 GBP
$26,150 USD
View
B
Retailer 5
-
£22,941 GBP
View
B
Retailer 6
-
£24,301 GBP
A$50,094 AUD
View
B
Retailer 7
-
£24,806 GBP
€31,655 EUR
View
B
Retailer 8
-
£26,392 GBP
$35,362 USD
View
B
Retailer 9
-
£27,342 GBP
$36,635 USD
View
B
Retailer 10
-
£28,263 GBP
ZAR 611,792 ZAR
View
B
Retailer 11
-
£35,894 GBP
$48,094 USD
View
Most Expensive
B
Wholesale Diamonds Direct
584852956 · Oct 27
£40,785 GBP
$54,648 USD
View
11 more retailers have this diamond
Prices start from £13,279 GBPSave up to £27,506 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+
6.21ct Cushion
£13,279 GBP