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Round|Lab Grown|IGI

1.28ct G VVS1 Round Lab Grown Diamond

ID • G/VVS1 • IGI LG838633903

Shape and cutting style on the report: Round brilliant

Certificate IGI LG838633903

Diamond specifications and retailer prices

From £135 GBP
$181 USD
As of October 29, 2026
Save £651 GBP (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £786 GBP at MOH London · As of October 29, 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 LG838633903 or 838633903. Listed at 19 retailers as of October 29, 2026, with prices from £135 to £786, a £651 spread on the same certified stone. MOH London lists it at £786. 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 angle33.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838633903
Dimensions7.03 × 7.01 × 4.29 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
7.03 mm7.01 mm1.28 ctG / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838633903
Side View
Table 56.0%Crown 33.5°Girdle: THN-MEDPavilion 41°Culet: NoneDepth 61.2%

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: Oct 29
Current: £786 GBP|Low: £129 GBP|High: £791 GBP|Avg: £380 GBP|+0.5%
MOH London
Retailer 2
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Retailer 19
November 1, 2026
Retailer 17£135 GBP
Retailer 8£157 GBP
Retailer 5£167 GBP
Retailer 19£167 GBP
Retailer 4£191 GBP
Retailer 3£225 GBP
Retailer 12£281 GBP
Retailer 14£287 GBP
Retailer 2£298 GBP
Retailer 7£363 GBP
Retailer 13£397 GBP
Retailer 15£408 GBP
Retailer 16£463 GBP
Retailer 9£537 GBP
Retailer 6£556 GBP
Retailer 10£557 GBP
Retailer 11£578 GBP
Retailer 18£590 GBP
MOH London£786 GBP

42 data points across 19 retailers

19 retailers£135 GBP to £786 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
-
£281 GBP
€359 EUR
View
A
Retailer 8
-
£287 GBP
ZAR 6,215 ZAR
View
A
Retailer 9
-
£298 GBP
View
B+
Retailer 10
-
£363 GBP
$486 USD
View
B+
Retailer 11
-
£397 GBP
$532 USD
View
B+
Retailer 12
-
£408 GBP
A$841 AUD
View
Retailer 13
-
£463 GBP
$620 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
£537 GBP
$720 USD
View
B
Retailer 15
-
£556 GBP
SGD 1,006 SGD
View
B
Retailer 16
-
£568 GBP
$761 USD
View
B
Retailer 17
-
£578 GBP
$774 USD
View
B
Retailer 18
-
£590 GBP
$790 USD
View
Most Expensive
B
MOH London
LG838633903 · Oct 29
£786 GBP
View
18 more retailers have this diamond
Prices start from £135 GBPSave up to £651 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