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Round|Lab Grown|IGI

10.31ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG665404035

Shape and cutting style on the report: Round brilliant

Certificate IGI LG665404035

Diamond specifications and retailer prices

From £1,531 GBP
$2,052 USD
As of October 29, 2026
Save £9,919 GBP (87%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £11,451 GBP at Brilliance · As of October 30, 2026
View at Brilliance

About this 10.31ct lab-grown round diamond

This 10.31ct lab-grown round 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 LG665404035 or 665404035. Listed at 20 retailers as of October 29, 2026, with prices from £1,531 to £11,451, a £9,919 spread on the same certified stone. Brilliance lists it at £11,451. 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

10.31
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665404035
Dimensions13.92 × 13.84 × 8.65 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.92 mm13.84 mm10.31 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665404035
Side View
Table 57.0%Crown 35.2°Girdle: MediumPavilion 40.7°Culet: NoneDepth 62.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £4,276 GBP|Low: £1,493 GBP|High: £10,911 GBP|Avg: £3,839 GBP|-7.5%
Brilliance
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
October 31, 2026
Retailer 4£1,531 GBP
Retailer 9£1,713 GBP
Retailer 11£2,226 GBP
Retailer 2£2,242 GBP
Retailer 12£2,269 GBP
Retailer 10£2,457 GBP
Retailer 16£2,670 GBP
Retailer 7£2,720 GBP
Retailer 6£3,045 GBP
Retailer 5£3,497 GBP
Brilliance£4,276 GBP
Retailer 15£4,558 GBP
Retailer 13£5,010 GBP
Retailer 14£5,561 GBP
Retailer 8£6,752 GBP
Retailer 3£10,292 GBP

36 data points across 16 retailers

20 retailers£1,531 GBP to £11,451 GBP

Retailer 1
-
£1,414 GBP
$1,895 USD
Price last confirmed 20 days ago
A
Retailer 2
-
£1,531 GBP
$2,052 USD
View
Final sale: no returns
Retailer 3
-
£1,641 GBP
$2,199 USD
View
Price last confirmed 20 days ago
Retailer 4
-
£1,641 GBP
$2,199 USD
View
Price last confirmed 21 days ago
A
Retailer 5
-
£1,713 GBP
$2,295 USD
View
A
Retailer 6
-
£2,226 GBP
HK$23,300 HKD
View
A
Retailer 7
-
£2,242 GBP
View
B+
Retailer 8
-
£2,269 GBP
$3,040 USD
View
A
Retailer 9
-
£2,457 GBP
ZAR 53,178 ZAR
View
A
Retailer 10
-
£2,670 GBP
$3,577 USD
View
Retailer 11
-
£3,045 GBP
A$6,277 AUD
View
Price last confirmed 9 days ago
Retailer 12
-
£3,076 GBP
$4,121 USD
View
Price last confirmed 21 days ago
A
Retailer 13
-
£3,497 GBP
CA$6,507 CAD
View
B+
Retailer 14
-
£4,276 GBP
$5,730 USD
View
B+
Retailer 15
-
£4,558 GBP
$6,107 USD
View
B+
Retailer 16
-
£5,010 GBP
$6,713 USD
View
B+
Retailer 17
-
£5,561 GBP
$7,451 USD
View
Retailer 18
-
£6,752 GBP
$9,047 USD
View
Price last confirmed 10 days ago
B
Retailer 19
-
£10,292 GBP
$13,790 USD
View
Most Expensive
B
Brilliance
D33543049 · Oct 30
£11,451 GBP
$15,343 USD
View
19 more retailers have this diamond
Prices start from £1,531 GBPSave up to £9,919 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
10.31ct Round
£1,531 GBP