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Cushion|Lab Grown|IGI

10.63ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG600309118

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG600309118

Diamond specifications and retailer prices

From £1,505 GBP
$2,016 USD
As of October 31, 2026
Save £5,377 GBP (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £6,881 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 10.63ct lab-grown cushion diamond

This 10.63ct lab-grown cushion sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG600309118 or 600309118. Listed at 16 retailers as of October 31, 2026, with prices from £1,505 to £6,881, a £5,377 spread on the same certified stone. Brilliant Earth lists it at £6,881. 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

10.63
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.5°
Pavilion angle30.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG600309118
Dimensions12.49 × 12.22 × 7.66 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
12.49 mm12.22 mm10.63 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG600309118
Side View
Table 59.0%Crown 39.5°Girdle: THK-VTKPavilion 30.4°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
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 31
Current: £6,881 GBP|Low: £1,505 GBP|High: £7,098 GBP|Avg: £2,761 GBP|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 3£1,505 GBP
Retailer 12£1,559 GBP
Retailer 11£1,683 GBP
Retailer 13£1,979 GBP
Retailer 6£2,211 GBP
Retailer 9£2,218 GBP
Retailer 7£2,335 GBP
Retailer 10£2,380 GBP
Retailer 8£2,414 GBP
Retailer 2£2,888 GBP
Retailer 4£3,230 GBP
Retailer 5£3,840 GBP
Brilliant Earth£6,881 GBP

43 data points across 13 retailers

16 retailers£1,505 GBP to £6,881 GBP

A
Cheapest Retailer
-
£1,505 GBP
$2,016 USD
Final sale: no returns
Retailer 2
-
£1,559 GBP
$2,089 USD
View
Price last confirmed 20 days ago
A
Retailer 3
-
£1,683 GBP
$2,255 USD
View
A
Retailer 4
-
£1,979 GBP
$2,651 USD
View
A
Retailer 5
-
£2,211 GBP
View
B+
Retailer 6
-
£2,218 GBP
$2,972 USD
View
A
Retailer 7
-
£2,335 GBP
€2,980 EUR
View
A
Retailer 8
-
£2,380 GBP
$3,189 USD
View
A
Retailer 9
-
£2,414 GBP
ZAR 52,243 ZAR
View
A
Retailer 10
-
£2,888 GBP
A$5,954 AUD
View
A
Retailer 11
-
£3,230 GBP
View
B+
Retailer 12
-
£3,840 GBP
$5,145 USD
View
B+
Retailer 13
-
£4,485 GBP
$6,009 USD
View
B+
Retailer 14
-
£4,973 GBP
$6,663 USD
View
B
Retailer 15
-
£5,465 GBP
$7,322 USD
View
Most Expensive
B
Brilliant Earth
10792660A · Oct 31
£6,881 GBP
$9,220 USD
View
15 more retailers have this diamond
Prices start from £1,505 GBPSave up to £5,377 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
10.63ct Cushion
£1,505 GBP