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Round|Lab Grown|IGI

10.51ct H VS1 Round Lab Grown Diamond

EX • H/VS1 • IGI LG665415952

Shape and cutting style on the report: Round brilliant

Certificate IGI LG665415952

Diamond specifications and retailer prices

From £1,614 GBP
$2,163 USD
As of October 31, 2026
Save £10,842 GBP (87%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £12,456 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 10.51ct lab-grown round diamond

This 10.51ct lab-grown round 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 LG665415952 or 665415952. Listed at 12 retailers as of October 31, 2026, with prices from £1,614 to £12,456, a £10,842 spread on the same certified stone. Brilliant Earth lists it at £12,456. 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

10.51
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665415952
Dimensions14.19 × 14.30 × 8.44 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
14.19 mm14.30 mm10.51 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665415952
Side View
Table 59.0%Crown 32.2°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 59.2%

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: £12,456 GBP|Low: £1,500 GBP|High: £12,844 GBP|Avg: £3,924 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 9£1,500 GBP
Retailer 11£1,614 GBP
Retailer 6£1,799 GBP
Retailer 7£2,589 GBP
Retailer 13£2,618 GBP
Retailer 5£2,627 GBP
Retailer 10£2,746 GBP
Retailer 8£2,930 GBP
Retailer 2£3,098 GBP
Retailer 4£4,835 GBP
Retailer 12£4,941 GBP
Retailer 3£5,855 GBP
Brilliant Earth£12,456 GBP

39 data points across 13 retailers

12 retailers£1,614 GBP to £12,456 GBP

Retailer 1
-
£1,500 GBP
Price last confirmed 15 days ago
A
Retailer 2
-
£1,614 GBP
$2,163 USD
View
Final sale: no returns
A
Retailer 3
-
£1,799 GBP
$2,410 USD
View
A
Retailer 4
-
£2,589 GBP
ZAR 56,034 ZAR
View
A
Retailer 5
-
£2,618 GBP
$3,508 USD
View
A
Retailer 6
-
£2,746 GBP
$3,679 USD
View
A
Retailer 7
-
£2,930 GBP
€3,739 EUR
View
Retailer 8
-
£3,098 GBP
A$6,387 AUD
View
Retailer 9
-
£4,835 GBP
$6,478 USD
View
Price last confirmed 112 days ago
B+
Retailer 10
-
£4,941 GBP
$6,620 USD
View
B
Retailer 11
-
£5,855 GBP
$7,845 USD
View
Most Expensive
B
Brilliant Earth
21027069A · Oct 31
£12,456 GBP
$16,690 USD
View
11 more retailers have this diamond
Prices start from £1,614 GBPSave up to £10,842 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
10.51ct Round
£1,614 GBP