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2.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6535368098

Certificate GIA 6535368098

Diamond specifications and retailer prices

From $39,531 NZD
$22,280 USD
As of November 1, 2026
Save $31,193 NZD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $70,724 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 6535368098. Listed at 13 retailers as of November 1, 2026, with prices from $39,531 to $70,724, a $31,193 spread on the same certified stone. MOH London lists it at $70,724. 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
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6535368098
Dimensions8.63 × 8.59 × 5.44 mm
L/W Ratio1.00
Top View
8.63 mm8.59 mm2.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6535368098
Side View
Table 56.0%Crown 36.5°Girdle: THN-STKPavilion 41°Culet: NoneDepth 63.1%

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: $70,724 NZD|Low: $39,531 NZD|High: $71,576 NZD|Avg: $50,012 NZD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 4$39,531 NZD
Retailer 5$43,396 NZD
Retailer 2$46,142 NZD
Retailer 7$47,172 NZD
Retailer 6$47,548 NZD
Retailer 8$49,058 NZD
Retailer 9$50,944 NZD
Retailer 3$53,374 NZD
MOH London$70,724 NZD

40 data points across 9 retailers

13 retailers$39,531 NZD to $70,724 NZD

B+
Cheapest Retailer
-
$39,531 NZD
$22,280 USD
B+
Retailer 2
-
$41,639 NZD
$23,468 USD
View
B
Retailer 3
-
$43,396 NZD
$24,458 USD
View
Final sale: no returns
B+
Retailer 4
-
$46,142 NZD
£20,477 GBP
View
B+
Retailer 5
-
$47,172 NZD
$26,586 USD
View
B
Retailer 6
-
$47,548 NZD
$26,798 USD
View
B
Retailer 7
-
$48,527 NZD
$27,350 USD
View
B
Retailer 8
-
$48,527 NZD
$27,350 USD
View
B
Retailer 9
-
$49,058 NZD
$27,649 USD
View
B
Retailer 10
-
$50,142 NZD
$28,260 USD
View
B
Retailer 11
-
$50,944 NZD
$28,712 USD
View
B
Retailer 12
-
$53,374 NZD
€28,649 EUR
View
Most Expensive
B
MOH London
2C311C6B1 · Nov 1
$70,724 NZD
£31,386 GBP
View
12 more retailers have this diamond
Prices start from $39,531 NZDSave up to $31,193 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
$39,531 NZD