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Round|Lab Grown|IGI

1.05ct J VS1 Round Lab Grown Diamond

EX • J/VS1 • IGI LG500151118

Shape and cutting style on the report: Round brilliant

Certificate IGI LG500151118

Diamond specifications and retailer prices

From £578 GBP
$770 USD
As of October 29, 2026
Save £1,376 GBP (70%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,112 GBP at MOH London · As of October 21, 2026
View at MOH London

About this 1.05ct lab-grown round diamond

This 1.05ct lab-grown round sits in the classic one-carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG500151118 or 500151118. Listed at 12 retailers as of October 28, 2026, with a 238% 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

1.05
Carat
J
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500151118
Dimensions6.55 × 6.56 × 4.03 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
6.55 mm6.56 mm1.05 ctJ / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500151118
Side View
Table 57.0%Crown 32.2°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £3,112 GBP|Low: £578 GBP|High: £3,137 GBP|Avg: £1,564 GBP|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 7£578 GBP
Retailer 6£831 GBP
Retailer 11£930 GBP
Retailer 8£963 GBP
Retailer 10£963 GBP
Retailer 12£1,093 GBP
Retailer 13£1,366 GBP
Retailer 9£1,533 GBP
Retailer 2£1,771 GBP
Retailer 3£1,954 GBP
Retailer 5£2,156 GBP
Retailer 4£2,758 GBP
MOH London£3,112 GBP

19 data points across 13 retailers

12 retailers£578 GBP to £1,954 GBP

A
Cheapest Retailer
-
£578 GBP
$770 USD
B+
Retailer 2
-
£831 GBP
$1,106 USD
View
B+
Retailer 3
-
£903 GBP
$1,203 USD
View
B+
Retailer 4
-
£930 GBP
$1,238 USD
View
Final sale: no returns
Retailer 5
-
£963 GBP
$1,283 USD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
£963 GBP
$1,283 USD
View
B+
Retailer 7
-
£1,093 GBP
$1,455 USD
View
B
Retailer 8
-
£1,533 GBP
$2,042 USD
View
B
Retailer 9
-
£1,771 GBP
ZAR 38,096 ZAR
View
B
Retailer 10
-
£1,805 GBP
$2,404 USD
View
B
Retailer 11
-
£1,954 GBP
$2,602 USD
View
Most Expensive
MOH London
LG500151118 · Oct 21
£3,112 GBP
View
Price last confirmed 9 days ago
11 more retailers have this diamond
Prices start from £578 GBPSave up to £1,376 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
1.05ct Round
£578 GBP