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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 $31,718 AUD
$22,280 USD
As of November 1, 2026
Save $25,027 AUD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $56,745 AUD 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 $31,718 to $56,745, a $25,027 spread on the same certified stone. MOH London lists it at $56,745. 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: $56,745 AUD|Low: $31,718 AUD|High: $57,428 AUD|Avg: $40,127 AUD|-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$31,718 AUD
Retailer 5$34,818 AUD
Retailer 2$37,022 AUD
Retailer 7$37,848 AUD
Retailer 6$38,150 AUD
Retailer 8$39,361 AUD
Retailer 9$40,874 AUD
Retailer 3$42,824 AUD
MOH London$56,745 AUD

40 data points across 9 retailers

13 retailers$31,718 AUD to $56,745 AUD

B+
Cheapest Retailer
-
$31,718 AUD
$22,280 USD
B+
Retailer 2
-
$33,409 AUD
$23,468 USD
View
B
Retailer 3
-
$34,818 AUD
$24,458 USD
View
Final sale: no returns
B+
Retailer 4
-
$37,022 AUD
£20,477 GBP
View
B+
Retailer 5
-
$37,848 AUD
$26,586 USD
View
B
Retailer 6
-
$38,150 AUD
$26,798 USD
View
B
Retailer 7
-
$38,935 AUD
$27,350 USD
View
B
Retailer 8
-
$38,935 AUD
$27,350 USD
View
B
Retailer 9
-
$39,361 AUD
$27,649 USD
View
B
Retailer 10
-
$40,231 AUD
$28,260 USD
View
B
Retailer 11
-
$40,874 AUD
$28,712 USD
View
B
Retailer 12
-
$42,824 AUD
€28,649 EUR
View
Most Expensive
B
MOH London
2C311C6B1 · Nov 1
$56,745 AUD
£31,386 GBP
View
12 more retailers have this diamond
Prices start from $31,718 AUDSave up to $25,027 AUD

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
$31,718 AUD