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Round|Lab Grown|IGI

1.29ct I VS1 Round Lab Grown Diamond

ID • I/VS1 • IGI LG653409257

Shape and cutting style on the report: Round brilliant

Certificate IGI LG653409257

Diamond specifications and retailer prices

From £268 GBP
$359 USD
As of November 1, 2026
Save £493 GBP (65%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £761 GBP at MOH London · As of November 1, 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 I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG653409257 or 653409257. Listed at 7 retailers as of November 1, 2026, with prices from £268 to £761, a £493 spread on the same certified stone. MOH London lists it at £761. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
I
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG653409257
Dimensions6.98 × 6.93 × 4.35 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
6.98 mm6.93 mm1.29 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG653409257
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 41.3°Culet: NoneDepth 62.5%

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: £761 GBP|Low: £249 GBP|High: £769 GBP|Avg: £487 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 3£268 GBP
Retailer 4£336 GBP
Retailer 5£416 GBP
Retailer 2£503 GBP
Retailer 6£652 GBP
MOH London£761 GBP

14 data points across 6 retailers

7 retailers£268 GBP to £761 GBP

B+
Cheapest Retailer
-
£268 GBP
$359 USD
A
Retailer 2
-
£336 GBP
$451 USD
View
Retailer 3
-
£364 GBP
$488 USD
View
Price last confirmed 78 days ago
A
Retailer 4
-
£416 GBP
$558 USD
View
Retailer 5
-
£503 GBP
$675 USD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
£652 GBP
$875 USD
View
Most Expensive
B+
MOH London
LG653409257 · Nov 1
£761 GBP
View
6 more retailers have this diamond
Prices start from £268 GBPSave up to £493 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
£268 GBP