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Round|Lab Grown|IGI

1.28ct G VVS1 Round Lab Grown Diamond

ID • G/VVS1 • IGI LG840650536

Shape and cutting style on the report: Round brilliant

Certificate IGI LG840650536

Diamond specifications and retailer prices

From £135 GBP
$181 USD
As of October 29, 2026
Save £648 GBP (83%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £783 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG840650536 or 840650536. Listed at 21 retailers as of October 26, 2026, with prices from £135 to £783, a £648 spread on the same certified stone. MOH London lists it at £783. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
G
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840650536
Dimensions6.93 × 6.96 × 4.33 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.93 mm6.96 mm1.28 ctG / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840650536
Side View
Table 58.0%Crown 35.2°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.3%

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: Oct 29
Current: £783 GBP|Low: £129 GBP|High: £791 GBP|Avg: £363 GBP|-1.1%
MOH London
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October 31, 2026
Retailer 19£135 GBP
Retailer 5£157 GBP
Retailer 4£167 GBP
Retailer 6£167 GBP
Retailer 3£191 GBP
Retailer 9£225 GBP
Retailer 15£280 GBP
Retailer 2£281 GBP
Retailer 16£287 GBP
Retailer 13£301 GBP
Retailer 10£354 GBP
Retailer 7£363 GBP
Retailer 14£397 GBP
Retailer 17£408 GBP
Retailer 18£463 GBP
Retailer 20£537 GBP
Retailer 12£556 GBP
Retailer 11£568 GBP
Retailer 8£578 GBP
MOH London£783 GBP

31 data points across 20 retailers

21 retailers£135 GBP to £783 GBP

A
Cheapest Retailer
-
£135 GBP
$181 USD
A
Retailer 2
-
£157 GBP
$210 USD
View
A
Retailer 3
-
£167 GBP
$224 USD
View
A
Retailer 4
-
£167 GBP
$224 USD
View
A
Retailer 5
-
£191 GBP
HK$2,000 HKD
View
B+
Retailer 6
-
£225 GBP
$302 USD
View
A
Retailer 7
-
£280 GBP
View
A
Retailer 8
-
£281 GBP
€359 EUR
View
A
Retailer 9
-
£287 GBP
ZAR 6,215 ZAR
View
A
Retailer 10
-
£301 GBP
View
B+
Retailer 11
-
£354 GBP
$474 USD
View
B+
Retailer 12
-
£363 GBP
$486 USD
View
B+
Retailer 13
-
£397 GBP
$532 USD
View
B+
Retailer 14
-
£408 GBP
A$841 AUD
View
Retailer 15
-
£463 GBP
$620 USD
View
Price last confirmed 10 days ago
B+
Retailer 16
-
£537 GBP
$720 USD
View
B
Retailer 17
-
£556 GBP
SGD 1,006 SGD
View
B
Retailer 18
-
£568 GBP
$761 USD
View
B
Retailer 19
-
£578 GBP
$774 USD
View
B
Retailer 20
-
£590 GBP
$790 USD
View
Most Expensive
B
MOH London
LG840650536 · Oct 26
£783 GBP
View
20 more retailers have this diamond
Prices start from £135 GBPSave up to £648 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
1.28ct Round
£135 GBP