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Marquise|Natural|HRD

2.51ct H SI2 Marquise Natural Diamond

GD • H/SI2 • HRD 260000001497

Certificate HRD 260000001497

Diamond specifications and retailer prices

From £13,559 GBP
As of November 1, 2026
6 retailers carry this diamond
Most expensive: £14,981 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 2.51ct natural marquise diamond

This 2.51ct natural marquise sits in the two to three carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by HRD 260000001497. Listed at 6 retailers as of November 1, 2026. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.51
Carat
H
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.01°
Pavilion angle37.4°
OriginNatural
Grading LabHRD
CertificateHRD 260000001497
Dimensions13.32 × 7.49 × 4.11 mm
L/W Ratio1.78
Girdle conditionMedium
Top View
13.32 mm7.49 mm2.51 ctH / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateHRD 260000001497
Side View
Table 67.0%Crown 33.01°GirdlePavilion 37.4°Culet: NoneDepth 54.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: £13,559 GBP|Low: £9,930 GBP|High: £22,374 GBP|Avg: £15,397 GBP|-3.5%
Retailer 1
Retailer 2
Retailer 3
November 1, 2026
Retailer 3£9,930 GBP
Retailer 1£13,559 GBP
Retailer 2£22,374 GBP

12 data points across 3 retailers

6 retailers

Retailer 1
-
£10,452 GBP
$14,005 USD
Price last confirmed 32 days ago
Retailer 2
-
£10,616 GBP
$14,224 USD
View
Price last confirmed 25 days ago
Retailer 3
-
£10,749 GBP
$14,402 USD
View
Price last confirmed 40 days ago
B+
Retailer 4
-
£13,559 GBP
View
Retailer 5
-
£14,796 GBP
$19,825 USD
View
Price last confirmed 29 days ago
Most Expensive
NZ Jewellers
54141ab4-0822-4182-8bdb-29a9d0675485 · Sep 28
£14,981 GBP
$20,073 USD
View
Price last confirmed 35 days ago
5 more retailers have this diamond
Prices start from £13,559 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.

B+
2.51ct Marquise
£13,559 GBP