CaratHunter
Plans
Cushion|Lab Grown|IGI

5.21ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG715566106

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG715566106

Diamond specifications and retailer prices

From £1,055 GBP
$1,414 USD
As of October 29, 2026
Save £3,781 GBP (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,836 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 5.21ct lab-grown cushion diamond

This 5.21ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG715566106 or 715566106. Listed at 16 retailers as of October 29, 2026, with prices from £1,055 to £4,836, a £3,781 spread on the same certified stone. Brilliant Earth lists it at £4,836. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.21
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG715566106
Dimensions12.68 × 8.66 × 5.81 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.68 mm8.66 mm5.21 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG715566106
Side View
Table 63.0%Crown 36.6°Girdle: MED-STKPavilion 36°Culet: NoneDepth 67.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £4,836 GBP|Low: £693 GBP|High: £9,120 GBP|Avg: £2,653 GBP|-47.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 7£1,055 GBP
Retailer 9£1,060 GBP
Retailer 2£1,565 GBP
Retailer 11£1,643 GBP
Retailer 5£1,702 GBP
Retailer 12£1,944 GBP
Retailer 3£2,684 GBP
Retailer 10£2,777 GBP
Retailer 4£2,828 GBP
Retailer 6£3,588 GBP
Retailer 8£4,165 GBP
Brilliant Earth£4,836 GBP

42 data points across 12 retailers

16 retailers£1,055 GBP to £4,836 GBP

A
Cheapest Retailer
-
£1,055 GBP
$1,414 USD
Final sale: no returns
A
Retailer 2
-
£1,060 GBP
$1,420 USD
View
A
Retailer 3
-
£1,337 GBP
HK$14,000 HKD
View
A
Retailer 4
-
£1,565 GBP
View
A
Retailer 5
-
£1,598 GBP
$2,141 USD
View
A
Retailer 6
-
£1,643 GBP
$2,202 USD
View
A
Retailer 7
-
£1,702 GBP
€2,172 EUR
View
B+
Retailer 8
-
£1,944 GBP
$2,605 USD
View
B+
Retailer 9
-
£2,684 GBP
View
B+
Retailer 10
-
£2,777 GBP
$3,721 USD
View
B+
Retailer 11
-
£2,828 GBP
$3,789 USD
View
B+
Retailer 12
-
£3,003 GBP
$4,024 USD
View
B
Retailer 13
-
£3,588 GBP
View
B
Retailer 14
-
£3,941 GBP
$5,281 USD
View
Retailer 15
-
£4,165 GBP
$5,580 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
18143876Y · Oct 30
£4,836 GBP
$6,480 USD
View
15 more retailers have this diamond
Prices start from £1,055 GBPSave up to £3,781 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
5.21ct Cushion
£1,055 GBP