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Round|Lab Grown|IGI

1.09ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG761551643

Shape and cutting style on the report: Round brilliant

Certificate IGI LG761551643

Diamond specifications and retailer prices

From £137 GBP
$184 USD
As of October 29, 2026
Save £481 GBP (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £802 GBP at MOH London · As of October 19, 2026
View at MOH London

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown round sits in the classic one-carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG761551643 or 761551643. Listed at 15 retailers as of October 29, 2026, with a 350% 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

1.09
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG761551643
Dimensions6.78 × 6.71 × 3.99 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.78 mm6.71 mm1.09 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG761551643
Side View
Table 59.0%Crown 33.4°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 59.2%

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: Oct 29
Current: £802 GBP|Low: £132 GBP|High: £808 GBP|Avg: £415 GBP|+0.4%
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
October 31, 2026
Retailer 10£137 GBP
Retailer 11£171 GBP
Retailer 3£257 GBP
Retailer 7£293 GBP
Retailer 12£300 GBP
Retailer 2£314 GBP
Retailer 13£352 GBP
Retailer 6£388 GBP
Retailer 8£416 GBP
Retailer 9£432 GBP
Retailer 5£589 GBP
Retailer 14£605 GBP
Retailer 4£716 GBP
MOH London£802 GBP

30 data points across 14 retailers

15 retailers£137 GBP to £618 GBP

A
Cheapest Retailer
-
£137 GBP
$184 USD
A
Retailer 2
-
£160 GBP
$214 USD
View
A
Retailer 3
-
£171 GBP
$229 USD
View
A
Retailer 4
-
£171 GBP
$229 USD
View
A
Retailer 5
-
£257 GBP
$345 USD
View
A
Retailer 6
-
£293 GBP
ZAR 6,341 ZAR
View
B+
Retailer 7
-
£300 GBP
$402 USD
View
B+
Retailer 8
-
£314 GBP
€401 EUR
View
B+
Retailer 9
-
£352 GBP
$471 USD
View
B+
Retailer 10
-
£416 GBP
A$858 AUD
View
B+
Retailer 11
-
£432 GBP
$579 USD
View
B
Retailer 12
-
£549 GBP
$735 USD
View
B
Retailer 13
-
£589 GBP
$789 USD
View
B
Retailer 14
-
£618 GBP
$828 USD
View
Most Expensive
MOH London
LG761551643 · Oct 19
£802 GBP
View
Price last confirmed 12 days ago
14 more retailers have this diamond
Prices start from £137 GBPSave up to £481 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
1.09ct Round
£137 GBP