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Round|Lab Grown|IGI

1.43ct G SI2 Round Lab Grown Diamond

ID • G/SI2 • IGI LG660459309

Certificate IGI LG660459309

Diamond specifications and retailer prices

From £566 GBP
As of November 6, 2026
Save £214 GBP (27%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £780 GBP at Zales · As of November 4, 2026
View at Zales

About this 1.43ct lab-grown round diamond

This 1.43ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG660459309 or 660459309. Listed at 3 retailers as of November 4, 2026, with prices from £566 to £780, a £214 spread on the same certified stone. Zales lists it at £780. 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

1.43
Carat
G
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG660459309
Dimensions7.20 × 7.25 mm
L/W Ratio1.01
Top View
7.20 mm7.25 mm1.43 ctG / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660459309
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.0%

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: £566 GBP|Low: £566 GBP|High: £1,159 GBP|Avg: £905 GBP|-51.2%
Retailer 1
Retailer 2
Zales
November 6, 2026
Retailer 1£566 GBP
Retailer 2£780 GBP
Zales£780 GBP

8 data points across 3 retailers

3 retailers£566 GBP to £780 GBP

B
Cheapest Retailer
-
£566 GBP
B
Retailer 2
-
£780 GBP
View
Most Expensive
B
Zales
523931832 · Nov 4
£780 GBP
$1,050 USD
View
2 more retailers have this diamond
Prices start from £566 GBPSave up to £214 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
1.43ct Round
£566 GBP