Round|Natural|HRD

2.51ct E SI2 Round Natural Diamond

GD • E/SI2 • HRD 260000059811

Certificate HRD 260000059811

Diamond specifications and retailer prices

From $17,885 NZD
A$15,508 AUD
As of October 31, 2026
Save $13,238 NZD (43%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $33,951 NZD at NZ Jewellers · As of September 27, 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 E colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by HRD 260000059811. Listed at 13 retailers as of October 29, 2026, with a 74% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceMedium
Pavilion angle40.3°
OriginNatural
Grading LabHRD
CertificateHRD 260000059811
Dimensions8.19 × 8.33 × 5.50 mm
L/W Ratio1.02
Top View
8.19 mm8.33 mm2.51 ctE / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateHRD 260000059811
Side View
Table 57.0%CrownGirdle: Very ThickPavilion 40.3°Culet: NoneDepth 66.4%

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: Oct 31
Current: $23,968 NZD|Low: $14,769 NZD|High: $35,516 NZD|Avg: $24,194 NZD|+21.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 6$17,885 NZD
Retailer 3$20,300 NZD
Retailer 5$20,967 NZD
Retailer 4$21,881 NZD
Retailer 1$23,968 NZD
Retailer 2$31,123 NZD
Retailer 7$35,516 NZD

27 data points across 7 retailers

13 retailers$17,885 NZD to $31,123 NZD

A
Cheapest Retailer
-
$17,885 NZD
A$15,508 AUD
Retailer 2
-
$18,502 NZD
$10,428 USD
View
Price last confirmed 40 days ago
A
Retailer 3
-
$20,300 NZD
$11,441 USD
View
A
Retailer 4
-
$20,967 NZD
$11,817 USD
View
Final sale: no returns
B+
Retailer 5
-
$21,881 NZD
$12,332 USD
View
Retailer 6
-
$22,486 NZD
$12,673 USD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
$23,968 NZD
€12,865 EUR
View
Retailer 8
-
$23,985 NZD
$13,518 USD
View
Price last confirmed 31 days ago
Retailer 9
-
$24,359 NZD
$13,729 USD
View
Price last confirmed 23 days ago
Retailer 10
-
$25,296 NZD
$14,257 USD
View
Price last confirmed 22 days ago
Retailer 11
-
$25,788 NZD
$14,534 USD
View
Price last confirmed 40 days ago
B+
Retailer 12
-
$31,123 NZD
£13,812 GBP
View
Most Expensive
NZ Jewellers
7183bb81-2c3f-495b-9c5a-0281a23ee46f · Sep 27
$33,951 NZD
$19,135 USD
View
Price last confirmed 34 days ago
12 more retailers have this diamond
Prices start from $17,885 NZDSave up to $13,238 NZD

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
$17,885 NZD