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Round|Lab Grown|IGI

1.29ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG818645102

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818645102

Diamond specifications and retailer prices

From £145 GBP
$194 USD
As of November 1, 2026
Save £696 GBP (83%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £840 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.29ct lab-grown round diamond

This 1.29ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818645102 or 818645102. Listed at 22 retailers as of October 29, 2026, with prices from £145 to £840, a £696 spread on the same certified stone. MOH London lists it at £840. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818645102
Dimensions6.99 × 7.04 × 4.28 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.99 mm7.04 mm1.29 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818645102
Side View
Table 57.0%Crown 34.2°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.1%

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 1
Current: £840 GBP|Low: £139 GBP|High: £846 GBP|Avg: £343 GBP|-0.7%
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
November 2, 2026
Retailer 13£145 GBP
Retailer 4£179 GBP
Retailer 5£200 GBP
Retailer 3£242 GBP
Retailer 7£302 GBP
Retailer 8£309 GBP
Retailer 10£309 GBP
Retailer 9£323 GBP
Retailer 12£395 GBP
Retailer 6£436 GBP
Retailer 2£461 GBP
Retailer 11£812 GBP
MOH London£840 GBP

35 data points across 13 retailers

22 retailers£145 GBP to £840 GBP

A
Cheapest Retailer
-
£145 GBP
$194 USD
A
Retailer 2
-
£162 GBP
$217 USD
View
Final sale: no returns
A
Retailer 3
-
£168 GBP
$225 USD
View
A
Retailer 4
-
£179 GBP
$240 USD
View
Retailer 5
-
£179 GBP
$240 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
£200 GBP
HK$2,100 HKD
View
B+
Retailer 7
-
£242 GBP
$325 USD
View
A
Retailer 8
-
£302 GBP
€386 EUR
View
A
Retailer 9
-
£309 GBP
View
A
Retailer 10
-
£309 GBP
ZAR 6,694 ZAR
View
A
Retailer 11
-
£323 GBP
View
A
Retailer 12
-
£329 GBP
$441 USD
View
B+
Retailer 13
-
£364 GBP
$489 USD
View
B+
Retailer 14
-
£395 GBP
$530 USD
View
B+
Retailer 15
-
£436 GBP
A$900 AUD
View
B+
Retailer 16
-
£461 GBP
$618 USD
View
B
Retailer 17
-
£575 GBP
$772 USD
View
B
Retailer 18
-
£585 GBP
SGD 1,061 SGD
View
B
Retailer 19
-
£603 GBP
$809 USD
View
B
Retailer 20
-
£615 GBP
$825 USD
View
B
Retailer 21
-
£812 GBP
$1,090 USD
View
Most Expensive
B
MOH London
LG818645102 · Oct 29
£840 GBP
View
21 more retailers have this diamond
Prices start from £145 GBPSave up to £696 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
1.29ct Round
£145 GBP