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Round|Natural|GIA

2.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6552067400

Certificate GIA 6552067400

Diamond specifications and retailer prices

From $35,742 AUD
$25,107 USD
As of November 1, 2026
Save $25,571 AUD (42%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $61,314 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 6552067400. Listed at 15 retailers as of November 1, 2026, with prices from $35,742 to $61,314, a $25,571 spread on the same certified stone. MOH London lists it at $61,314. 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: $61,314 AUD|Low: $35,742 AUD|High: $62,051 AUD|Avg: $44,200 AUD|-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$35,742 AUD
Retailer 8$38,188 AUD
Retailer 4$39,259 AUD
Retailer 9$39,548 AUD
Retailer 2$39,621 AUD
Retailer 11$40,894 AUD
Retailer 10$41,222 AUD
Retailer 12$42,530 AUD
Retailer 3$44,166 AUD
Retailer 5$47,422 AUD
Retailer 6$54,286 AUD
MOH London$61,314 AUD

40 data points across 12 retailers

15 retailers$35,742 AUD to $61,314 AUD

B+
Cheapest Retailer
-
$35,742 AUD
$25,107 USD
B+
Retailer 2
-
$36,977 AUD
CA$36,075 CAD
View
B+
Retailer 3
-
$38,188 AUD
$26,825 USD
View
B+
Retailer 4
-
$39,259 AUD
$27,577 USD
View
Retailer 5
-
$39,548 AUD
View
Price last confirmed 29 days ago
B+
Retailer 6
-
$39,621 AUD
£21,915 GBP
View
B
Retailer 7
-
$40,894 AUD
$28,726 USD
View
B
Retailer 8
-
$41,222 AUD
$28,956 USD
View
B
Retailer 9
-
$42,530 AUD
$29,875 USD
View
B
Retailer 10
-
$43,077 AUD
$30,259 USD
View
B
Retailer 11
-
$44,166 AUD
$31,024 USD
View
B
Retailer 12
-
$45,854 AUD
$32,210 USD
View
B
Retailer 13
-
$47,422 AUD
€31,725 EUR
View
B
Retailer 14
-
$54,286 AUD
ZAR 616,039 ZAR
View
Most Expensive
B
MOH London
84B63B2F4 · Nov 1
$61,314 AUD
£33,913 GBP
View
14 more retailers have this diamond
Prices start from $35,742 AUDSave up to $25,571 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
$35,742 AUD