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Round|Lab Grown|IGI

10.40ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG605383642

Shape and cutting style on the report: Round brilliant

Certificate IGI LG605383642

Diamond specifications and retailer prices

From £4,502 GBP
$6,032 USD
As of October 31, 2026
Save £12,852 GBP (74%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £17,353 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 10.4ct lab-grown round diamond

This 10.4ct 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 LG605383642 or 605383642. Listed at 4 retailers as of October 30, 2026, with prices from £4,502 to £17,353, a £12,852 spread on the same certified stone. Taylor and Hart lists it at £17,353. 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

10.40
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG605383642
Dimensions14.12 × 14.09 × 8.42 mm
L/W Ratio1.00
Girdle conditionFaceted
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
14.12 mm14.09 mm10.40 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG605383642
Side View
Table 60.0%Crown 33.2°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 59.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £6,308 GBP|Low: £4,502 GBP|High: £17,353 GBP|Avg: £9,209 GBP|+2.7%
Retailer 1
Retailer 2
Retailer 3
Taylor and Hart
October 31, 2026
Retailer 3£4,502 GBP
Retailer 1£6,308 GBP
Retailer 2£8,442 GBP
Taylor and Hart£17,353 GBP

39 data points across 4 retailers

4 retailers£4,502 GBP to £17,353 GBP

B+
Cheapest Retailer
-
£4,502 GBP
$6,032 USD
B
Retailer 2
-
£6,308 GBP
View
B
Retailer 3
-
£8,442 GBP
$11,311 USD
View
Most Expensive
B
Taylor and Hart
Q4WCV46 · Oct 30
£17,353 GBP
$23,252 USD
View
3 more retailers have this diamond
Prices start from £4,502 GBPSave up to £12,852 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.

B+
10.40ct Round
£4,502 GBP