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Round|Lab Grown|IGI

1.55ct J VS1 Round Lab Grown Diamond

ID • J/VS1 • IGI LG451056221

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451056221

Diamond specifications and retailer prices

From £661 GBP
As of November 5, 2026
Save £3,100 GBP (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,761 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG451056221 or 451056221. Listed at 13 retailers as of November 5, 2026, with prices from £661 to £3,761, a £3,100 spread on the same certified stone. MOH London lists it at £3,761. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
J
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056221
Dimensions7.41 × 7.36 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.41 mm7.36 mm1.55 ctJ / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451056221
Side View
Table 58.0%Crown 36.1°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 61.7%

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: Nov 5
Current: £3,761 GBP|Low: £661 GBP|High: £3,823 GBP|Avg: £1,728 GBP|-1.3%
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
Retailer 14
Retailer 15
November 5, 2026
Retailer 9£661 GBP
Retailer 10£1,012 GBP
Retailer 14£1,101 GBP
Retailer 13£1,133 GBP
Retailer 11£1,174 GBP
Retailer 3£1,300 GBP
Retailer 6£1,370 GBP
Retailer 5£1,609 GBP
Retailer 2£1,735 GBP
Retailer 12£1,855 GBP
Retailer 8£2,160 GBP
Retailer 4£2,188 GBP
Retailer 15£2,200 GBP
Retailer 7£2,626 GBP
MOH London£3,761 GBP

28 data points across 15 retailers

13 retailers£661 GBP to £3,761 GBP

A
Cheapest Retailer
-
£661 GBP
A
Retailer 2
-
£1,012 GBP
View
A
Retailer 3
-
£1,101 GBP
View
B+
Retailer 4
-
£1,133 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,174 GBP
View
Retailer 6
-
£1,174 GBP
View
Price last confirmed 25 days ago
B+
Retailer 7
-
£1,300 GBP
View
B+
Retailer 8
-
£1,735 GBP
View
B
Retailer 9
-
£1,855 GBP
View
B
Retailer 10
-
£2,160 GBP
View
B
Retailer 11
-
£2,188 GBP
View
B
Retailer 12
-
£2,200 GBP
View
Most Expensive
B
MOH London
LG451056221 · Nov 5
£3,761 GBP
View
12 more retailers have this diamond
Prices start from £661 GBPSave up to £3,100 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
1.55ct Round
£661 GBP