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1.51ct H I1 Round Natural Diamond

EX • H/I1 • HRD 260000207509

Certificate HRD 260000207509

Diamond specifications and retailer prices

From £1,351 GBP
$1,810 USD
As of October 26, 2026
8 retailers carry this diamond
Most expensive: £3,647 GBP at NZ Jewellers · As of October 23, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by HRD 260000207509. Listed at 8 retailers as of October 26, 2026. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
H
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.9°
OriginNatural
Grading LabHRD
CertificateHRD 260000207509
Dimensions7.31 × 7.34 × 4.53 mm
L/W Ratio1.00
Top View
7.31 mm7.34 mm1.51 ctH / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 260000207509
Side View
Table 59.0%Crown 36.1°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 26
Current: £3,647 GBP|Low: £1,139 GBP|High: £3,647 GBP|Avg: £1,704 GBP|+1.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 26, 2026
Retailer 3£1,206 GBP
Retailer 9£1,350 GBP
Retailer 5£1,351 GBP
Retailer 8£1,380 GBP
Retailer 2£1,495 GBP
Retailer 6£1,495 GBP
Retailer 4£1,564 GBP
Retailer 7£1,726 GBP
NZ Jewellers£3,647 GBP

27 data points across 9 retailers

8 retailers

Retailer 1
-
£1,206 GBP
₹153,924 INR
Price last confirmed 8 days ago
Retailer 2
-
£1,350 GBP
$1,809 USD
View
Price last confirmed 9 days ago
A
Retailer 3
-
£1,351 GBP
$1,810 USD
View
Retailer 4
-
£1,495 GBP
$2,003 USD
View
Price last confirmed 7 days ago
Retailer 5
-
£1,495 GBP
$2,003 USD
View
Price last confirmed 9 days ago
Retailer 6
-
£1,564 GBP
$2,096 USD
View
Price last confirmed 8 days ago
Retailer 7
-
£1,726 GBP
$2,312 USD
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
f6e25bef-d73e-4f7c-b5e6-1bbc29e2fb56 · Oct 23
£3,647 GBP
$4,887 USD
View
Price last confirmed 9 days ago
7 more retailers have this diamond
Prices start from £1,351 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 Round
£1,351 GBP