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Oval|Lab Grown|IGI

1.51ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG425067893

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG425067893

Diamond specifications and retailer prices

From £613 GBP
As of November 6, 2026
Save £3,009 GBP (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,622 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG425067893 or 425067893. Listed at 11 retailers as of November 5, 2026, with prices from £613 to £3,622, a £3,009 spread on the same certified stone. MOH London lists it at £3,622. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425067893
Dimensions8.72 × 6.53 × 4.17 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.72 mm6.53 mm1.51 ctI / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG425067893
Side View
Table 57.5%Crown 36.2°Girdle: STK-THKPavilion 40.9°Culet: NoneDepth 63.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,622 GBP|Low: £613 GBP|High: £3,681 GBP|Avg: £1,714 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 5£613 GBP
Retailer 2£974 GBP
Retailer 9£1,060 GBP
Retailer 10£1,091 GBP
Retailer 6£1,130 GBP
Retailer 11£1,259 GBP
Retailer 3£1,557 GBP
Retailer 7£1,788 GBP
Retailer 12£2,107 GBP
Retailer 8£2,119 GBP
Retailer 4£3,236 GBP
MOH London£3,622 GBP

14 data points across 12 retailers

11 retailers£613 GBP to £3,622 GBP

A
Cheapest Retailer
-
£613 GBP
B+
Retailer 2
-
£974 GBP
View
B+
Retailer 3
-
£1,060 GBP
View
B+
Retailer 4
-
£1,091 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,130 GBP
View
Retailer 6
-
£1,130 GBP
View
Price last confirmed 25 days ago
B
Retailer 7
-
£1,259 GBP
View
B
Retailer 8
-
£1,788 GBP
View
B
Retailer 9
-
£2,107 GBP
View
B
Retailer 10
-
£2,119 GBP
View
Most Expensive
B
MOH London
LG425067893 · Nov 5
£3,622 GBP
View
10 more retailers have this diamond
Prices start from £613 GBPSave up to £3,009 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.

A
1.51ct Oval
£613 GBP