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2.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6552067400

Certificate GIA 6552067400

Diamond specifications and retailer prices

From $44,547 NZD
$25,107 USD
As of November 1, 2026
Save $31,871 NZD (42%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $76,418 NZD at MOH London · As of November 1, 2026
View at MOH London

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 6552067400. Listed at 15 retailers as of November 1, 2026, with prices from $44,547 to $76,418, a $31,871 spread on the same certified stone. MOH London lists it at $76,418. 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 angle33°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6552067400
Dimensions8.64 × 8.69 × 5.41 mm
L/W Ratio1.01
Star length50%
Top View
8.64 mm8.69 mm2.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552067400
Side View
Table 58.0%Crown 33°Girdle: Slightly ThickPavilion 41.8°Culet: NoneDepth 62.4%

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: $76,418 NZD|Low: $44,547 NZD|High: $77,338 NZD|Avg: $55,088 NZD|-0.1%
MOH London
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 7$44,547 NZD
Retailer 8$47,596 NZD
Retailer 4$48,930 NZD
Retailer 9$49,290 NZD
Retailer 2$49,382 NZD
Retailer 11$50,969 NZD
Retailer 10$51,377 NZD
Retailer 12$53,007 NZD
Retailer 3$55,046 NZD
Retailer 5$59,104 NZD
Retailer 6$67,659 NZD
MOH London$76,418 NZD

40 data points across 12 retailers

15 retailers$44,547 NZD to $76,418 NZD

B+
Cheapest Retailer
-
$44,547 NZD
$25,107 USD
B+
Retailer 2
-
$46,086 NZD
CA$36,075 CAD
View
B+
Retailer 3
-
$47,596 NZD
$26,825 USD
View
B+
Retailer 4
-
$48,930 NZD
$27,577 USD
View
Retailer 5
-
$49,290 NZD
A$42,738 AUD
View
Price last confirmed 29 days ago
B+
Retailer 6
-
$49,382 NZD
£21,915 GBP
View
B
Retailer 7
-
$50,969 NZD
$28,726 USD
View
B
Retailer 8
-
$51,377 NZD
$28,956 USD
View
B
Retailer 9
-
$53,007 NZD
$29,875 USD
View
B
Retailer 10
-
$53,689 NZD
$30,259 USD
View
B
Retailer 11
-
$55,046 NZD
$31,024 USD
View
B
Retailer 12
-
$57,150 NZD
$32,210 USD
View
B
Retailer 13
-
$59,104 NZD
€31,725 EUR
View
B
Retailer 14
-
$67,659 NZD
ZAR 616,039 ZAR
View
Most Expensive
B
MOH London
84B63B2F4 · Nov 1
$76,418 NZD
£33,913 GBP
View
14 more retailers have this diamond
Prices start from $44,547 NZDSave up to $31,871 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
$44,547 NZD