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Oval|Natural|GIA

1.51ct M SI2 Oval Natural Diamond

ID • M/SI2 • GIA 6532666645

Certificate GIA 6532666645

Diamond specifications and retailer prices

From £1,651 GBP
As of November 3, 2026
Save £1,800 GBP (52%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,451 GBP at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

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 6532666645. Listed at 6 retailers as of November 2, 2026, with prices from £1,651 to £3,451, a £1,800 spread on the same certified stone. NZ Jewellers lists it at £3,451. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.94°
Pavilion angle40.28°
OriginNatural
Grading LabGIA
CertificateGIA 6532666645
Dimensions8.97 × 6.42 × 4.03 mm
L/W Ratio1.40
Top View
8.97 mm6.42 mm1.51 ctM / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6532666645
Side View
Table 61.0%Crown 37.94°GirdlePavilion 40.28°CuletDepth 62.7%

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 3
Current: £3,451 GBP|Low: £1,651 GBP|High: £3,452 GBP|Avg: £2,019 GBP|-0.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5£1,651 GBP
Retailer 3£1,697 GBP
Retailer 4£1,727 GBP
Retailer 6£1,741 GBP
Retailer 8£1,833 GBP
Retailer 2£1,851 GBP
Retailer 7£2,030 GBP
NZ Jewellers£3,451 GBP

44 data points across 8 retailers

6 retailers£1,651 GBP to £3,451 GBP

A
Cheapest Retailer
-
£1,651 GBP
A
Retailer 2
-
£1,697 GBP
View
B+
Retailer 3
-
£1,727 GBP
View
B+
Retailer 4
-
£1,741 GBP
View
B+
Retailer 5
-
£1,851 GBP
View
Most Expensive
B
NZ Jewellers
c9a91147-1d70-4a0e-a0c1-0d8c696b7b7c · Nov 2
£3,451 GBP
$4,619 USD
View
5 more retailers have this diamond
Prices start from £1,651 GBPSave up to £1,800 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
£1,651 GBP