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Round|Lab Grown|IGI

1.00ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG818682059

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818682059

Diamond specifications and retailer prices

From £114 GBP
$153 USD
As of October 29, 2026
Save £550 GBP (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £664 GBP at MOH London · As of October 26, 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 LG818682059 or 818682059. Listed at 20 retailers as of October 26, 2026, with prices from £114 to £664, a £550 spread on the same certified stone. MOH London lists it at £664. 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 angle35.8°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818682059
Dimensions6.38 × 6.35 × 3.95 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
6.38 mm6.35 mm1.00 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818682059
Side View
Table 56.0%Crown 35.8°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.0%

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 29
Current: £664 GBP|Low: £113 GBP|High: £675 GBP|Avg: £340 GBP|-0.4%
MOH London
Retailer 2
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Retailer 7
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Retailer 19
October 31, 2026
Retailer 14£114 GBP
Retailer 5£128 GBP
Retailer 8£133 GBP
Retailer 4£142 GBP
Retailer 19£142 GBP
Retailer 10£212 GBP
Retailer 17£244 GBP
Retailer 13£246 GBP
Retailer 2£247 GBP
Retailer 16£260 GBP
Retailer 9£295 GBP
Retailer 18£346 GBP
Retailer 12£369 GBP
Retailer 15£379 GBP
Retailer 7£390 GBP
Retailer 11£450 GBP
Retailer 3£456 GBP
Retailer 6£497 GBP
MOH London£664 GBP

37 data points across 19 retailers

20 retailers£114 GBP to £664 GBP

A
Cheapest Retailer
-
£114 GBP
$153 USD
A
Retailer 2
-
£128 GBP
$171 USD
View
Final sale: no returns
A
Retailer 3
-
£133 GBP
$178 USD
View
A
Retailer 4
-
£142 GBP
$190 USD
View
A
Retailer 5
-
£142 GBP
$190 USD
View
A
Retailer 6
-
£212 GBP
$284 USD
View
B+
Retailer 7
-
£244 GBP
ZAR 5,274 ZAR
View
A
Retailer 8
-
£246 GBP
View
B+
Retailer 9
-
£247 GBP
View
B+
Retailer 10
-
£260 GBP
$348 USD
View
Retailer 11
-
£295 GBP
$395 USD
View
Price last confirmed 13 days ago
Retailer 12
-
£295 GBP
$395 USD
View
Price last confirmed 10 days ago
B+
Retailer 13
-
£346 GBP
A$713 AUD
View
B+
Retailer 14
-
£369 GBP
$494 USD
View
B+
Retailer 15
-
£379 GBP
$508 USD
View
B+
Retailer 16
-
£390 GBP
SGD 707 SGD
View
B
Retailer 17
-
£456 GBP
$611 USD
View
B
Retailer 18
-
£462 GBP
$619 USD
View
B
Retailer 19
-
£497 GBP
$666 USD
View
Most Expensive
B
MOH London
LG818682059 · Oct 26
£664 GBP
View
19 more retailers have this diamond
Prices start from £114 GBPSave up to £550 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
1.00ct Round
£114 GBP