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Round|Lab Grown|IGI

1.81ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG634440621

Shape and cutting style on the report: Round brilliant

Certificate IGI LG634440621

Diamond specifications and retailer prices

From £268 GBP
$360 USD
As of November 1, 2026
Save £1,031 GBP (79%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,299 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.81ct lab-grown round diamond

This 1.81ct lab-grown round 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 LG634440621 or 634440621. Listed at 17 retailers as of November 1, 2026, with prices from £268 to £1,299, a £1,031 spread on the same certified stone. MOH London lists it at £1,299. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.81
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG634440621
Dimensions7.83 × 7.80 × 4.82 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
7.83 mm7.80 mm1.81 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG634440621
Side View
Table 60.0%Crown 34.6°Girdle: MediumPavilion 41.4°Culet: NoneDepth 61.7%

Caratlytics Score

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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 1
Current: £1,299 GBP|Low: £268 GBP|High: £1,401 GBP|Avg: £642 GBP|-6.1%
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 4£268 GBP
Retailer 15£300 GBP
Retailer 13£311 GBP
Retailer 8£332 GBP
Retailer 7£336 GBP
Retailer 11£490 GBP
Retailer 6£492 GBP
Retailer 12£531 GBP
Retailer 14£533 GBP
Retailer 2£573 GBP
Retailer 5£779 GBP
Retailer 10£975 GBP
Retailer 9£1,069 GBP
Retailer 3£1,099 GBP
MOH London£1,299 GBP

31 data points across 15 retailers

17 retailers£268 GBP to £1,299 GBP

A
Cheapest Retailer
-
£268 GBP
$360 USD
A
Retailer 2
-
£300 GBP
$402 USD
View
Final sale: no returns
A
Retailer 3
-
£311 GBP
$417 USD
View
A
Retailer 4
-
£332 GBP
$446 USD
View
Retailer 5
-
£336 GBP
$451 USD
View
Price last confirmed 8 days ago
Retailer 6
-
£349 GBP
$469 USD
View
Price last confirmed 48 days ago
A
Retailer 7
-
£490 GBP
$657 USD
View
A
Retailer 8
-
£492 GBP
$660 USD
View
A
Retailer 9
-
£531 GBP
$712 USD
View
A
Retailer 10
-
£533 GBP
$715 USD
View
A
Retailer 11
-
£573 GBP
ZAR 12,431 ZAR
View
B+
Retailer 12
-
£697 GBP
$935 USD
View
B+
Retailer 13
-
£779 GBP
A$1,609 AUD
View
B
Retailer 14
-
£975 GBP
$1,309 USD
View
B+
Retailer 15
-
£1,069 GBP
$1,434 USD
View
B+
Retailer 16
-
£1,099 GBP
$1,475 USD
View
Most Expensive
B
MOH London
LG634440621 · Nov 1
£1,299 GBP
View
16 more retailers have this diamond
Prices start from £268 GBPSave up to £1,031 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
1.81ct Round
£268 GBP