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Round|Lab Grown|IGI

1.22ct J VS1 Round Lab Grown Diamond

EX • J/VS1 • IGI LG451055514

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451055514

Diamond specifications and retailer prices

From £515 GBP
$690 USD
As of October 30, 2026
Save £3,066 GBP (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,581 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.22ct lab-grown round diamond

This 1.22ct 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 LG451055514 or 451055514. Listed at 12 retailers as of October 29, 2026, with prices from £515 to £3,581, a £3,066 spread on the same certified stone. MOH London lists it at £3,581. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.22
Carat
J
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055514
Dimensions6.79 × 6.81 × 4.29 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.79 mm6.81 mm1.22 ctJ / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451055514
Side View
Table 56.5%Crown 36.2°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 63.2%

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 30
Current: £3,581 GBP|Low: £515 GBP|High: £3,605 GBP|Avg: £1,654 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2£515 GBP
Retailer 6£955 GBP
Retailer 10£1,070 GBP
Retailer 7£1,108 GBP
Retailer 9£1,108 GBP
Retailer 11£1,239 GBP
Retailer 12£1,523 GBP
Retailer 8£1,755 GBP
Retailer 5£2,038 GBP
Retailer 3£2,066 GBP
Retailer 4£2,481 GBP
MOH London£3,581 GBP

17 data points across 12 retailers

12 retailers£515 GBP to £3,581 GBP

A
Cheapest Retailer
-
£515 GBP
$690 USD
B+
Retailer 2
-
£955 GBP
$1,280 USD
View
B+
Retailer 3
-
£1,040 GBP
$1,393 USD
View
B+
Retailer 4
-
£1,070 GBP
$1,434 USD
View
Final sale: no returns
Retailer 5
-
£1,108 GBP
$1,485 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
£1,108 GBP
$1,485 USD
View
B+
Retailer 7
-
£1,239 GBP
$1,660 USD
View
B
Retailer 8
-
£1,755 GBP
$2,351 USD
View
B
Retailer 9
-
£2,038 GBP
ZAR 44,108 ZAR
View
B
Retailer 10
-
£2,066 GBP
$2,768 USD
View
B
Retailer 11
-
£2,078 GBP
$2,784 USD
View
Most Expensive
B
MOH London
LG451055514 · Oct 29
£3,581 GBP
View
11 more retailers have this diamond
Prices start from £515 GBPSave up to £3,066 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
1.22ct Round
£515 GBP