CaratHunter
Plans
Oval|Natural|HRD

1.51ct I SI2 Oval Natural Diamond

ID • I/SI2 • HRD 260000139598

Certificate HRD 260000139598

Diamond specifications and retailer prices

From £1,616 GBP
As of November 6, 2026
Save £2,705 GBP (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,321 GBP at NZ Jewellers · As of November 5, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by HRD 260000139598. Listed at 14 retailers as of November 5, 2026, with prices from £1,616 to £4,321, a £2,705 spread on the same certified stone. NZ Jewellers lists it at £4,321. 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
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabHRD
CertificateHRD 260000139598
Dimensions9.09 × 6.30 × 4.02 mm
L/W Ratio1.44
Top View
9.09 mm6.30 mm1.51 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 260000139598
Side View
Table 57.0%CrownGirdle: MediumPavilionCulet: 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: £4,321 GBP|Low: £1,616 GBP|High: £4,321 GBP|Avg: £2,345 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 7£1,616 GBP
Retailer 11£1,879 GBP
Retailer 13£1,905 GBP
Retailer 5£1,908 GBP
Retailer 12£2,018 GBP
Retailer 9£2,067 GBP
Retailer 14£2,067 GBP
Retailer 3£2,146 GBP
Retailer 6£2,172 GBP
Retailer 2£2,211 GBP
Retailer 4£2,385 GBP
Retailer 8£2,406 GBP
Retailer 10£3,611 GBP
NZ Jewellers£4,321 GBP

38 data points across 14 retailers

14 retailers£1,616 GBP to £4,321 GBP

A
Cheapest Retailer
-
£1,616 GBP
A
Retailer 2
-
£1,879 GBP
View
A
Retailer 3
-
£1,905 GBP
View
A
Retailer 4
-
£1,908 GBP
View
Final sale: no returns
A
Retailer 5
-
£2,018 GBP
View
Retailer 6
-
£2,067 GBP
View
Price last confirmed 8 days ago
A
Retailer 7
-
£2,067 GBP
View
A
Retailer 8
-
£2,146 GBP
View
A
Retailer 9
-
£2,172 GBP
View
A
Retailer 10
-
£2,211 GBP
View
A
Retailer 11
-
£2,385 GBP
View
A
Retailer 12
-
£2,406 GBP
View
A
Retailer 13
-
£3,611 GBP
View
Most Expensive
B+
NZ Jewellers
b02110e8-cfc0-4c39-b929-5c38352b10bf · Nov 5
£4,321 GBP
$5,783 USD
View
13 more retailers have this diamond
Prices start from £1,616 GBPSave up to £2,705 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
£1,616 GBP