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Round|Lab Grown|IGI

1.24ct G SI2 Round Lab Grown Diamond

ID • G/SI2 • IGI LG660459270

Certificate IGI LG660459270

Diamond specifications and retailer prices

From £403 GBP
As of November 6, 2026
Save £162 GBP (29%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £565 GBP at Zales · As of November 4, 2026
View at Zales

About this 1.24ct lab-grown round diamond

This 1.24ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG660459270 or 660459270. Listed at 3 retailers as of November 4, 2026, with prices from £403 to £565, a £162 spread on the same certified stone. Zales lists it at £565. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.24
Carat
G
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG660459270
Dimensions6.87 × 6.90 mm
L/W Ratio1.00
Top View
6.87 mm6.90 mm1.24 ctG / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660459270
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: £403 GBP|Low: £403 GBP|High: £981 GBP|Avg: £724 GBP|-58.9%
Retailer 1
Retailer 2
Zales
November 6, 2026
Retailer 1£403 GBP
Retailer 2£565 GBP
Zales£565 GBP

10 data points across 3 retailers

3 retailers£403 GBP to £565 GBP

C
Cheapest Retailer
-
£403 GBP
B
Retailer 2
-
£565 GBP
View
Most Expensive
B
Zales
523931877 · Nov 4
£565 GBP
$760 USD
View
2 more retailers have this diamond
Prices start from £403 GBPSave up to £162 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.

B
1.24ct Round
£403 GBP