Round|Natural|HRD

2.51ct F SI2 Round Natural Diamond

EX • F/SI2 • HRD 260000122528

Certificate HRD 260000122528

Diamond specifications and retailer prices

From $10,738 USD
₹1,022,639 INR
As of November 1, 2026
Save $8,451 USD (44%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $21,034 USD at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by HRD 260000122528. Listed at 8 retailers as of November 1, 2026, with a 79% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle41.1°
OriginNatural
Grading LabHRD
CertificateHRD 260000122528
Dimensions8.64 × 8.59 × 5.46 mm
L/W Ratio1.01
Culet sizeNone
Top View
8.64 mm8.59 mm2.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 260000122528
Side View
Table 56.0%Crown 36.6°Girdle: MediumPavilion 41.1°Culet: NoneDepth 63.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $14,766 USD|Low: $10,738 USD|High: $19,948 USD|Avg: $14,778 USD|+6.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 2$10,738 USD
Retailer 5$12,583 USD
Retailer 1$14,766 USD
Retailer 3$15,057 USD
Retailer 4$19,188 USD

27 data points across 5 retailers

8 retailers$10,738 USD to $19,188 USD

A
Cheapest Retailer
-
$10,738 USD
₹1,022,639 INR
A
Retailer 2
-
$12,583 USD
View
A
Retailer 3
-
$14,766 USD
€14,063 EUR
View
A
Retailer 4
-
$15,057 USD
View
Retailer 5
-
$15,091 USD
View
Price last confirmed 24 days ago
Retailer 6
-
$15,672 USD
View
Price last confirmed 23 days ago
A
Retailer 7
-
$19,188 USD
£15,109 GBP
View
Most Expensive
NZ Jewellers
b52f63b4-d2fa-47ec-a6e6-f90901827270 · Sep 26
$21,034 USD
View
Price last confirmed 35 days ago
7 more retailers have this diamond
Prices start from $10,738 USDSave up to $8,451 USD

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 Round
$10,738 USD