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Oval|Natural|GIA

1.51ct M SI2 Oval Natural Diamond

EX • M/SI2 • GIA 1558727921

Certificate GIA 1558727921

Diamond specifications and retailer prices

From £1,186 GBP
As of November 6, 2026
Save £828 GBP (41%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,014 GBP at Yorxs · As of November 6, 2026
View at Yorxs

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558727921. Listed at 4 retailers as of November 6, 2026, with prices from £1,186 to £2,014, a £828 spread on the same certified stone. Yorxs lists it at £2,014. 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
M
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Pavilion angle34.88°
OriginNatural
Grading LabGIA
CertificateGIA 1558727921
Dimensions8.90 × 6.28 × 3.98 mm
L/W Ratio1.42
Key to symbols
Crystal, Needle
Top View
8.90 mm6.28 mm1.51 ctM / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1558727921
Side View
Table 59.0%CrownGirdle: THK-VTKPavilion 34.88°Culet: NoneDepth 63.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,652 GBP|Low: £1,186 GBP|High: £2,178 GBP|Avg: £1,725 GBP|-10.0%
Retailer 1
Retailer 2
Retailer 3
Yorxs
November 6, 2026
Retailer 2£1,186 GBP
Retailer 1£1,652 GBP
Retailer 3£1,805 GBP
Yorxs£2,014 GBP

40 data points across 4 retailers

4 retailers£1,186 GBP to £2,014 GBP

A
Cheapest Retailer
-
£1,186 GBP
B+
Retailer 2
-
£1,652 GBP
View
B+
Retailer 3
-
£1,805 GBP
View
Most Expensive
B+
Yorxs
614598274 · Nov 6
£2,014 GBP
€2,567 EUR
View
3 more retailers have this diamond
Prices start from £1,186 GBPSave up to £828 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
£1,186 GBP