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Radiant|Natural|HRD

2.51ct H SI2 Radiant Natural Diamond

EX • H/SI2 • HRD 250000296370

Certificate HRD 250000296370

Diamond specifications and retailer prices

From £6,216 GBP
$8,329 USD
As of October 29, 2026
Save £4,180 GBP (40%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £10,396 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 2.51ct natural radiant diamond

This 2.51ct natural radiant sits in the two to three carat band, graded H 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 250000296370. Listed at 4 retailers as of October 29, 2026, with prices from £6,216 to £10,396, a £4,180 spread on the same certified stone. NZ Jewellers lists it at £10,396. 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.05°
Pavilion angle30.89°
OriginNatural
Grading LabHRD
CertificateHRD 250000296370
Dimensions8.99 × 6.78 × 4.46 mm
L/W Ratio1.33
Girdle conditionMedium
Top View
8.99 mm6.78 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 250000296370
Side View
Table 70.0%Crown 44.05°GirdlePavilion 30.89°Culet: NoneDepth 65.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £10,396 GBP|Low: £6,124 GBP|High: £10,432 GBP|Avg: £7,483 GBP|-0.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 5£6,124 GBP
Retailer 4£6,216 GBP
Retailer 2£6,312 GBP
Retailer 6£6,621 GBP
Retailer 3£8,709 GBP
NZ Jewellers£10,396 GBP

20 data points across 6 retailers

4 retailers£6,216 GBP to £10,396 GBP

A
Cheapest Retailer
-
£6,216 GBP
$8,329 USD
A
Retailer 2
-
£6,312 GBP
$8,457 USD
View
A
Retailer 3
-
£8,709 GBP
View
Most Expensive
A
NZ Jewellers
08a9342f-3621-4946-8beb-74fc9ef5e466 · Oct 30
£10,396 GBP
$13,930 USD
View
3 more retailers have this diamond
Prices start from £6,216 GBPSave up to £4,180 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
2.51ct Radiant
£6,216 GBP