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Cushion|Lab Grown|IGI

8.51ct H VS1 Cushion Lab Grown Diamond

EX • H/VS1 • IGI LG647454568

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG647454568

Diamond specifications and retailer prices

From £1,781 GBP
$2,386 USD
As of October 31, 2026
Save £9,160 GBP (84%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £10,941 GBP at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 8.51ct lab-grown cushion diamond

This 8.51ct lab-grown cushion sits in the over five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG647454568 or 647454568. Listed at 14 retailers as of October 31, 2026, with prices from £1,781 to £10,941, a £9,160 spread on the same certified stone. Do Amore Diamonds lists it at £10,941. 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

8.51
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG647454568
Dimensions14.75 × 10.31 × 6.80 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.75 mm10.31 mm8.51 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG647454568
Side View
Table 64.0%Crown 37.7°Girdle: STK-VTKPavilion 36.8°Culet: NoneDepth 66.0%

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 31
Current: £10,941 GBP|Low: £1,781 GBP|High: £11,658 GBP|Avg: £4,299 GBP|-6.1%
Do Amore Diamonds
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
November 1, 2026
Retailer 13£1,781 GBP
Retailer 16£1,844 GBP
Retailer 12£1,967 GBP
Retailer 3£2,152 GBP
Retailer 5£2,178 GBP
Retailer 10£2,422 GBP
Retailer 8£2,474 GBP
Retailer 15£2,590 GBP
Retailer 11£3,414 GBP
Retailer 9£3,772 GBP
Retailer 4£3,867 GBP
Retailer 14£5,170 GBP
Retailer 2£5,450 GBP
Retailer 6£7,109 GBP
Retailer 7£9,329 GBP
Do Amore Diamonds£10,941 GBP

30 data points across 16 retailers

14 retailers£1,781 GBP to £10,941 GBP

A
Cheapest Retailer
-
£1,781 GBP
$2,386 USD
Final sale: no returns
Retailer 2
-
£1,844 GBP
$2,471 USD
View
Price last confirmed 21 days ago
A
Retailer 3
-
£1,967 GBP
$2,635 USD
View
A
Retailer 4
-
£2,152 GBP
$2,883 USD
View
A
Retailer 5
-
£2,178 GBP
$2,918 USD
View
A
Retailer 6
-
£2,422 GBP
View
A
Retailer 7
-
£2,590 GBP
$3,470 USD
View
B+
Retailer 8
-
£3,414 GBP
ZAR 73,903 ZAR
View
B+
Retailer 9
-
£3,772 GBP
A$7,775 AUD
View
B+
Retailer 10
-
£3,867 GBP
View
B
Retailer 11
-
£5,170 GBP
$6,927 USD
View
B
Retailer 12
-
£5,450 GBP
View
B
Retailer 13
-
£7,109 GBP
$9,525 USD
View
Most Expensive
B
Do Amore Diamonds
27-522F630BB · Nov 1
£10,941 GBP
$14,660 USD
View
13 more retailers have this diamond
Prices start from £1,781 GBPSave up to £9,160 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
8.51ct Cushion
£1,781 GBP