Radiant|Lab Grown|IGI

1.55ct H VS1 Radiant Lab Grown Diamond

ID • H/VS1 • IGI LG620421277

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG620421277

Diamond specifications and retailer prices

From £157 GBP
$211 USD
As of October 27, 2026
Save £654 GBP (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £811 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.55ct lab-grown radiant diamond

This 1.55ct lab-grown radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG620421277 or 620421277. Listed at 16 retailers as of October 26, 2026, with prices from £157 to £811, a £654 spread on the same certified stone. MOH London lists it at £811. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.5°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620421277
Dimensions8.29 × 5.80 × 3.81 mm
L/W Ratio1.43
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
8.29 mm5.80 mm1.55 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620421277
Side View
Table 63.0%Crown 40.5°Girdle: MediumPavilion 34.9°Culet: NoneDepth 65.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: £811 GBP|Low: £157 GBP|High: £820 GBP|Avg: £417 GBP|+0.1%
MOH London
Retailer 2
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Retailer 11
Retailer 12
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Retailer 16
October 31, 2026
Retailer 16£157 GBP
Retailer 10£176 GBP
Retailer 13£183 GBP
Retailer 6£202 GBP
Retailer 8£202 GBP
Retailer 12£263 GBP
Retailer 14£336 GBP
Retailer 2£367 GBP
Retailer 15£384 GBP
Retailer 11£387 GBP
Retailer 4£456 GBP
Retailer 9£505 GBP
Retailer 7£650 GBP
Retailer 3£667 GBP
Retailer 5£746 GBP
MOH London£811 GBP

26 data points across 16 retailers

16 retailers£157 GBP to £811 GBP

A
Cheapest Retailer
-
£157 GBP
$211 USD
A
Retailer 2
-
£176 GBP
$236 USD
View
Final sale: no returns
A
Retailer 3
-
£183 GBP
$245 USD
View
A
Retailer 4
-
£202 GBP
$271 USD
View
A
Retailer 5
-
£202 GBP
$271 USD
View
B+
Retailer 6
-
£263 GBP
$352 USD
View
A
Retailer 7
-
£336 GBP
ZAR 7,263 ZAR
View
A
Retailer 8
-
£367 GBP
€468 EUR
View
A
Retailer 9
-
£384 GBP
$515 USD
View
A
Retailer 10
-
£387 GBP
$518 USD
View
A
Retailer 11
-
£456 GBP
A$940 AUD
View
A
Retailer 12
-
£505 GBP
$677 USD
View
B+
Retailer 13
-
£650 GBP
$871 USD
View
B+
Retailer 14
-
£667 GBP
$894 USD
View
B+
Retailer 15
-
£746 GBP
$1,000 USD
View
Most Expensive
B+
MOH London
LG620421277 · Oct 26
£811 GBP
View
15 more retailers have this diamond
Prices start from £157 GBPSave up to £654 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 Radiant
£157 GBP