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Oval|Lab Grown|IGI

1.51ct K SI2 Oval Lab Grown Diamond

ID • K/SI2 • IGI LG451055734

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451055734

Diamond specifications and retailer prices

From £1,281 GBP
As of November 5, 2026
Save £2,951 GBP (70%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,232 GBP at MOH London · As of November 5, 2026
View at MOH London

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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451055734 or 451055734. Listed at 8 retailers as of November 5, 2026, with prices from £1,281 to £4,232, a £2,951 spread on the same certified stone. MOH London lists it at £4,232. 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

1.51
Carat
K
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055734
Dimensions8.77 × 6.56 × 4.11 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.77 mm6.56 mm1.51 ctK / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451055734
Side View
Table 59.0%Crown 35.7°Girdle: STK-THKPavilion 40.9°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £4,232 GBP|Low: £1,230 GBP|High: £4,300 GBP|Avg: £2,368 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3£1,281 GBP
Retailer 7£1,393 GBP
Retailer 4£1,486 GBP
Retailer 8£1,980 GBP
Retailer 5£2,334 GBP
Retailer 2£2,562 GBP
Retailer 6£2,785 GBP
Retailer 9£3,325 GBP
MOH London£4,232 GBP

13 data points across 9 retailers

8 retailers£1,281 GBP to £4,232 GBP

B+
Cheapest Retailer
-
£1,281 GBP
B+
Retailer 2
-
£1,393 GBP
View
Retailer 3
-
£1,486 GBP
View
Price last confirmed 25 days ago
B
Retailer 4
-
£1,486 GBP
View
B
Retailer 5
-
£2,334 GBP
View
B
Retailer 6
-
£2,562 GBP
View
B
Retailer 7
-
£2,785 GBP
View
Most Expensive
B
MOH London
LG451055734 · Nov 5
£4,232 GBP
View
7 more retailers have this diamond
Prices start from £1,281 GBPSave up to £2,951 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
£1,281 GBP