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Round|Lab Grown|IGI

1.51ct I VS1 Round Lab Grown Diamond

ID • I/VS1 • IGI LG555273644

Shape and cutting style on the report: Round brilliant

Certificate IGI LG555273644

Diamond specifications and retailer prices

From £276 GBP
$370 USD
As of November 3, 2026
Save £853 GBP (76%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,338 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG555273644 or 555273644. Listed at 15 retailers as of November 3, 2026, with a 310% 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

1.51
Carat
I
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG555273644
Dimensions7.37 × 7.33 × 4.50 mm
L/W Ratio1.01
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
7.37 mm7.33 mm1.51 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG555273644
Side View
Table 56.5%Crown 35°GirdlePavilion 40.2°Culet: NoneDepth 61.3%

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: Nov 3
Current: £1,338 GBP|Low: £220 GBP|High: £1,353 GBP|Avg: £628 GBP|-1.0%
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 2, 2026
Retailer 11£276 GBP
Retailer 4£309 GBP
Retailer 13£320 GBP
Retailer 3£342 GBP
Retailer 12£342 GBP
Retailer 6£522 GBP
Retailer 9£522 GBP
Retailer 15£531 GBP
Retailer 2£533 GBP
Retailer 14£546 GBP
Retailer 8£590 GBP
Retailer 10£1,003 GBP
Retailer 5£1,100 GBP
Retailer 7£1,129 GBP
MOH London£1,338 GBP

35 data points across 15 retailers

15 retailers£276 GBP to £1,129 GBP

A
Cheapest Retailer
-
£276 GBP
$370 USD
A
Retailer 2
-
£309 GBP
$414 USD
View
Final sale: no returns
A
Retailer 3
-
£320 GBP
$429 USD
View
Retailer 4
-
£342 GBP
$459 USD
View
Price last confirmed 9 days ago
A
Retailer 5
-
£342 GBP
$459 USD
View
B+
Retailer 6
-
£522 GBP
$700 USD
View
B+
Retailer 7
-
£522 GBP
$700 USD
View
B+
Retailer 8
-
£531 GBP
$712 USD
View
B+
Retailer 9
-
£533 GBP
View
B+
Retailer 10
-
£546 GBP
$733 USD
View
B+
Retailer 11
-
£590 GBP
ZAR 12,791 ZAR
View
B
Retailer 12
-
£1,003 GBP
$1,346 USD
View
B
Retailer 13
-
£1,100 GBP
$1,476 USD
View
B
Retailer 14
-
£1,129 GBP
$1,515 USD
View
Most Expensive
MOH London
LG555273644 · Oct 26
£1,338 GBP
View
Price last confirmed 7 days ago
14 more retailers have this diamond
Prices start from £276 GBPSave up to £853 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
1.51ct Round
£276 GBP