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Round|Natural|GIA

2.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1549103009

Certificate GIA 1549103009

Diamond specifications and retailer prices

From $43,657 NZD
$24,605 USD
As of November 1, 2026
Save $25,924 NZD (37%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $69,581 NZD at Cape Diamonds · As of October 27, 2026
View at Cape Diamonds

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1549103009. Listed at 13 retailers as of October 27, 2026, with prices from $43,657 to $69,581, a $25,924 spread on the same certified stone. Cape Diamonds lists it at $69,581. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1549103009
Dimensions8.94 × 8.88 × 5.21 mm
L/W Ratio1.01
Girdle conditionMedium
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
8.94 mm8.88 mm2.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1549103009
Side View
Table 61.0%Crown 32.5°Girdle: MediumPavilion 41°Culet: NoneDepth 58.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $69,581 NZD|Low: $43,657 NZD|High: $76,801 NZD|Avg: $54,752 NZD|+1.4%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 10$43,657 NZD
Retailer 11$44,136 NZD
Retailer 5$46,899 NZD
Retailer 8$46,954 NZD
Retailer 4$47,782 NZD
Retailer 2$50,949 NZD
Retailer 9$51,540 NZD
Retailer 6$55,076 NZD
Retailer 3$58,804 NZD
Retailer 7$59,084 NZD
Cape Diamonds$69,581 NZD
Retailer 12$76,801 NZD

36 data points across 12 retailers

13 retailers$43,657 NZD to $69,581 NZD

B+
Cheapest Retailer
-
$43,657 NZD
$24,605 USD
B+
Retailer 2
-
$44,136 NZD
$24,875 USD
View
B+
Retailer 3
-
$46,899 NZD
₹2,517,370 INR
View
B
Retailer 4
-
$46,954 NZD
$26,463 USD
View
B+
Retailer 5
-
$48,031 NZD
A$41,646 AUD
View
B
Retailer 6
-
$50,949 NZD
$28,715 USD
View
Retailer 7
-
$50,949 NZD
$28,715 USD
View
Price last confirmed 12 days ago
Retailer 8
-
$51,224 NZD
$28,870 USD
View
Price last confirmed 43 days ago
B
Retailer 9
-
$51,540 NZD
$29,048 USD
View
B
Retailer 10
-
$55,076 NZD
£24,442 GBP
View
Retailer 11
-
$58,804 NZD
$33,142 USD
View
Price last confirmed 40 days ago
B
Retailer 12
-
$59,084 NZD
€31,714 EUR
View
Most Expensive
B
Cape Diamonds
cert_1549103009 · Oct 27
$69,581 NZD
ZAR 633,536 ZAR
View
12 more retailers have this diamond
Prices start from $43,657 NZDSave up to $25,924 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.

B+
2.51ct Round
$43,657 NZD