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Cushion|Lab Grown|IGI

8.35ct H VS1 Cushion Lab Grown Diamond

GD • H/VS1 • IGI LG578321254

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG578321254

Diamond specifications and retailer prices

From £1,194 GBP
$1,600 USD
As of October 31, 2026
Save £3,314 GBP (74%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,508 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 8.35ct lab-grown cushion diamond

This 8.35ct lab-grown cushion sits in the over five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG578321254 or 578321254. Listed at 14 retailers as of October 31, 2026, with prices from £1,194 to £4,508, a £3,314 spread on the same certified stone. Brilliant Earth lists it at £4,508. 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

8.35
Carat
H
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG578321254
Dimensions11.72 × 11.46 × 7.84 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
11.72 mm11.46 mm8.35 ctH / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG578321254
Side View
Table 62.0%Crown 37.1°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 68.4%

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: £4,508 GBP|Low: £641 GBP|High: £4,642 GBP|Avg: £2,396 GBP|-2.9%
Brilliant Earth
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
November 1, 2026
Retailer 3£1,028 GBP
Retailer 13£1,066 GBP
Retailer 10£1,194 GBP
Retailer 14£1,464 GBP
Retailer 9£1,530 GBP
Retailer 4£1,690 GBP
Retailer 11£1,787 GBP
Retailer 8£1,974 GBP
Retailer 15£2,544 GBP
Retailer 7£2,571 GBP
Retailer 5£3,190 GBP
Retailer 2£3,424 GBP
Retailer 6£3,737 GBP
Retailer 12£4,097 GBP
Brilliant Earth£4,508 GBP

32 data points across 15 retailers

14 retailers£1,194 GBP to £4,508 GBP

Retailer 1
-
£1,066 GBP
$1,428 USD
Price last confirmed 21 days ago
A
Retailer 2
-
£1,194 GBP
$1,600 USD
View
B+
Retailer 3
-
£1,464 GBP
$1,961 USD
View
B+
Retailer 4
-
£1,530 GBP
€1,953 EUR
View
B
Retailer 5
-
£1,690 GBP
$2,264 USD
View
B+
Retailer 6
-
£1,787 GBP
ZAR 38,684 ZAR
View
B+
Retailer 7
-
£1,974 GBP
A$4,070 AUD
View
B+
Retailer 8
-
£2,544 GBP
$3,409 USD
View
B+
Retailer 9
-
£2,571 GBP
View
Retailer 10
-
£3,190 GBP
$4,275 USD
View
Price last confirmed 21 days ago
B
Retailer 11
-
£3,424 GBP
View
B
Retailer 12
-
£3,737 GBP
$5,007 USD
View
Retailer 13
-
£4,097 GBP
$5,490 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
7623993A · Oct 31
£4,508 GBP
$6,040 USD
View
13 more retailers have this diamond
Prices start from £1,194 GBPSave up to £3,314 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
8.35ct Cushion
£1,194 GBP