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Round|Lab Grown|IGI

1.55ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG696546946

Certificate IGI LG696546946

Diamond specifications and retailer prices

From £739 GBP
As of November 6, 2026
Save £264 GBP (26%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,003 GBP at Kay Jewelers · As of November 5, 2026
View at Kay Jewelers

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG696546946 or 696546946. Listed at 4 retailers as of November 5, 2026, with prices from £739 to £1,003, a £264 spread on the same certified stone. Kay Jewelers lists it at £1,003. 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

1.55
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG696546946
Dimensions7.37 × 7.40 × 4.59 mm
L/W Ratio1.00
Top View
7.37 mm7.40 mm1.55 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG696546946
Side View
Table 56.0%CrownGirdle: MediumPavilionCulet: NoneDepth 62.1%

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: £1,003 GBP|Low: £739 GBP|High: £1,434 GBP|Avg: £958 GBP
Kay Jewelers
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 2£739 GBP
Retailer 3£739 GBP
Kay Jewelers£1,003 GBP
Retailer 4£1,003 GBP

2 data points across 4 retailers

4 retailers£739 GBP to £1,003 GBP

B
Cheapest Retailer
-
£739 GBP
B
Retailer 2
-
£739 GBP
View
B
Retailer 3
-
£1,003 GBP
View
Most Expensive
B
Kay Jewelers
254739582 · Nov 5
£1,003 GBP
$1,350 USD
View
3 more retailers have this diamond
Prices start from £739 GBPSave up to £264 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
1.55ct Round
£739 GBP