Round|Lab Grown|IGI

1.00ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG838640791

Shape and cutting style on the report: Round brilliant

Certificate IGI LG838640791

Diamond specifications and retailer prices

From £260 GBP
€332 EUR
As of October 27, 2026
Save £247 GBP (49%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £647 GBP at MOH London · As of October 19, 2026
View at MOH London

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG838640791 or 838640791. Listed at 18 retailers as of October 27, 2026, with a 95% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838640791
Dimensions6.50 × 6.47 × 3.86 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.50 mm6.47 mm1.00 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838640791
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 59.6%

Caratlytics Score

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

Price History

Last verified: Oct 27
Current: £647 GBP|Low: £107 GBP|High: £651 GBP|Avg: £300 GBP|-0.6%
MOH London
Retailer 2
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Retailer 6
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Retailer 11
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Retailer 19
October 25, 2026
Retailer 18£111 GBP
Retailer 7£129 GBP
Retailer 5£138 GBP
Retailer 9£138 GBP
Retailer 6£210 GBP
Retailer 13£228 GBP
Retailer 15£234 GBP
Retailer 17£239 GBP
Retailer 8£253 GBP
Retailer 12£260 GBP
Retailer 19£299 GBP
Retailer 4£319 GBP
Retailer 16£339 GBP
Retailer 14£352 GBP
Retailer 3£443 GBP
Retailer 11£478 GBP
Retailer 10£484 GBP
Retailer 2£508 GBP
MOH London£647 GBP

23 data points across 19 retailers

18 retailers£260 GBP to £508 GBP

Retailer 1
-
£111 GBP
$149 USD
Price last confirmed 11 days ago
Retailer 2
-
£129 GBP
$173 USD
View
Price last confirmed 12 days ago
Retailer 3
-
£138 GBP
$185 USD
View
Price last confirmed 15 days ago
Retailer 4
-
£138 GBP
$185 USD
View
Price last confirmed 12 days ago
Retailer 5
-
£210 GBP
$282 USD
View
Price last confirmed 10 days ago
Retailer 6
-
£228 GBP
View
Price last confirmed 11 days ago
Retailer 7
-
£234 GBP
ZAR 5,073 ZAR
View
Price last confirmed 14 days ago
Retailer 8
-
£239 GBP
View
Price last confirmed 14 days ago
Retailer 9
-
£253 GBP
$339 USD
View
Price last confirmed 10 days ago
B+
Retailer 10
-
£260 GBP
€332 EUR
View
Retailer 11
-
£299 GBP
$400 USD
View
Price last confirmed 27 days ago
Retailer 12
-
£319 GBP
$428 USD
View
Price last confirmed 10 days ago
Retailer 13
-
£339 GBP
A$699 AUD
View
Price last confirmed 14 days ago
Retailer 14
-
£352 GBP
$472 USD
View
Price last confirmed 10 days ago
Retailer 15
-
£443 GBP
$593 USD
View
Price last confirmed 14 days ago
Retailer 16
-
£484 GBP
$649 USD
View
Price last confirmed 10 days ago
B
Retailer 17
-
£508 GBP
$680 USD
View
Most Expensive
MOH London
LG838640791 · Oct 19
£647 GBP
View
Price last confirmed 13 days ago
17 more retailers have this diamond
Prices start from £260 GBPSave up to £247 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+
1.00ct Round
£260 GBP