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Cushion|Lab Grown|IGI

8.57ct E VVS1 Cushion Lab Grown Diamond

ID • E/VVS1 • IGI LG839651442

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG839651442

Diamond specifications and retailer prices

From £2,406 GBP
$3,204 USD
As of October 29, 2026
Save £6,752 GBP (74%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £13,254 GBP at Helzberg Diamonds · As of October 13, 2026
View at Helzberg Diamonds

About this 8.57ct lab-grown cushion diamond

This 8.57ct lab-grown cushion sits in the over five carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG839651442 or 839651442. Listed at 19 retailers as of October 28, 2026, with a 281% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

8.57
Carat
E
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839651442
Dimensions14.72 × 10.55 × 6.66 mm
L/W Ratio1.40
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.72 mm10.55 mm8.57 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839651442
Side View
Table 65.0%Crown 37.5°Girdle: MED-STKPavilion 33.3°Culet: NoneDepth 63.1%

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 29
Current: £4,179 GBP|Low: £2,406 GBP|High: £9,284 GBP|Avg: £5,006 GBP|-0.4%
Retailer 1
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 29, 2026
Retailer 5£2,406 GBP
Retailer 9£2,537 GBP
Retailer 17£2,613 GBP
Retailer 16£2,709 GBP
Retailer 13£2,982 GBP
Retailer 10£3,356 GBP
Retailer 14£3,561 GBP
Retailer 11£3,798 GBP
Retailer 1£4,179 GBP
Retailer 3£4,303 GBP
Retailer 4£4,624 GBP
Retailer 12£6,350 GBP
Retailer 8£6,401 GBP
Retailer 6£8,682 GBP
Retailer 7£8,797 GBP
Retailer 2£9,004 GBP
Retailer 15£9,158 GBP

20 data points across 17 retailers

19 retailers£2,406 GBP to £9,158 GBP

A
Cheapest Retailer
-
£2,406 GBP
$3,204 USD
Final sale: no returns
Retailer 2
-
£2,537 GBP
$3,378 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
£2,613 GBP
$3,480 USD
View
A
Retailer 4
-
£2,709 GBP
$3,607 USD
View
A
Retailer 5
-
£2,982 GBP
View
A
Retailer 6
-
£3,356 GBP
View
A
Retailer 7
-
£3,561 GBP
$4,742 USD
View
A
Retailer 8
-
£3,798 GBP
€4,817 EUR
View
B+
Retailer 9
-
£4,179 GBP
ZAR 89,906 ZAR
View
B+
Retailer 10
-
£4,303 GBP
View
Retailer 11
-
£4,624 GBP
A$9,474 AUD
View
Price last confirmed 7 days ago
B+
Retailer 12
-
£6,350 GBP
View
B+
Retailer 13
-
£6,401 GBP
$8,524 USD
View
B+
Retailer 14
-
£8,682 GBP
$11,562 USD
View
B
Retailer 15
-
£8,797 GBP
SGD 15,830 SGD
View
B
Retailer 16
-
£9,004 GBP
$11,990 USD
View
B
Retailer 17
-
£9,158 GBP
$12,196 USD
View
Retailer 18
-
£11,248 GBP
A$23,045 AUD
View
Price last confirmed 21 days ago
Most Expensive
Helzberg Diamonds
ZXZOJPMLHKKI · Oct 13
£13,254 GBP
$17,650 USD
View
Price last confirmed 16 days ago
18 more retailers have this diamond
Prices start from £2,406 GBPSave up to £6,752 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
8.57ct Cushion
£2,406 GBP