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Oval|Lab Grown|IGI

1.51ct D SI2 Oval Lab Grown Diamond

D/SI2 • IGI LG691580333

Certificate IGI LG691580333

Diamond specifications and retailer prices

From £696 GBP
As of November 6, 2026
Save £253 GBP (27%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £949 GBP at Kay Jewelers · As of November 6, 2026
View at Kay Jewelers

About this 1.51ct lab-grown oval diamond

This 1.51ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included) and certified by IGI LG691580333 or 691580333. Listed at 3 retailers as of November 6, 2026, with prices from £696 to £949, a £253 spread on the same certified stone. Kay Jewelers lists it at £949. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG691580333
Dimensions9.34 × 6.46 mm
L/W Ratio1.45
Top View
9.34 mm6.46 mm1.51 ctD / SI2
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691580333
Side View
Table 62.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.2%

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: £949 GBP|Low: £696 GBP|High: £949 GBP|Avg: £900 GBP
Kay Jewelers
Retailer 2
Retailer 3
November 6, 2026
Retailer 2£696 GBP
Kay Jewelers£949 GBP
Retailer 3£949 GBP

2 data points across 3 retailers

3 retailers£696 GBP to £949 GBP

B
Cheapest Retailer
-
£696 GBP
C
Retailer 2
-
£949 GBP
View
Most Expensive
C
Kay Jewelers
254642456 · Nov 6
£949 GBP
$1,270 USD
View
2 more retailers have this diamond
Prices start from £696 GBPSave up to £253 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
1.51ct Oval
£696 GBP