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Round|Lab Grown|IGI

1.29ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG696546994

Certificate IGI LG696546994

Diamond specifications and retailer prices

From £469 GBP
As of November 6, 2026
Save £185 GBP (28%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £654 GBP at Kay Jewelers · As of November 5, 2026
View at Kay Jewelers

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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG696546994 or 696546994. Listed at 3 retailers as of November 5, 2026, with prices from £469 to £654, a £185 spread on the same certified stone. Kay Jewelers lists it at £654. 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

1.29
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG696546994
Dimensions6.97 × 7.02 mm
L/W Ratio1.01
Top View
6.97 mm7.02 mm1.29 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG696546994
Side View
Table 58.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 61.0%

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: £654 GBP|Low: £469 GBP|High: £1,062 GBP|Avg: £806 GBP|-18.5%
Kay Jewelers
Retailer 2
Retailer 3
November 6, 2026
Retailer 2£469 GBP
Kay Jewelers£654 GBP
Retailer 3£654 GBP

6 data points across 3 retailers

3 retailers£469 GBP to £654 GBP

B
Cheapest Retailer
-
£469 GBP
B
Retailer 2
-
£654 GBP
View
Most Expensive
B
Kay Jewelers
254726651 · Nov 5
£654 GBP
$880 USD
View
2 more retailers have this diamond
Prices start from £469 GBPSave up to £185 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
1.29ct Round
£469 GBP