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Round|Natural|GIA

0.73ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2558575050

Certificate GIA 2558575050

Diamond specifications and retailer prices

From $1,546 AUD
As of November 3, 2026
Save $1,840 AUD (54%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,055 AUD at NZ Jewellers · As of September 15, 2026
View at NZ Jewellers

About this 0.73ct natural round diamond

This 0.73ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2558575050. Listed at 17 retailers as of November 2, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.73
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2558575050
Dimensions5.72 × 5.75 × 3.60 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
5.72 mm5.75 mm0.73 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558575050
Side View
Table 57.0%Crown 34.5°Girdle: Slightly ThickPavilion 41.4°Culet: NoneDepth 62.7%

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 3
Current: $2,254 AUD|Low: $1,416 AUD|High: $4,020 AUD|Avg: $2,183 AUD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 4, 2026
Retailer 6$1,461 AUD
Retailer 17$1,546 AUD
Retailer 10$1,572 AUD
Retailer 5$1,604 AUD
Retailer 16$1,608 AUD
Retailer 4$1,675 AUD
Retailer 9$1,677 AUD
Retailer 3$1,808 AUD
Retailer 7$1,994 AUD
Retailer 11$2,078 AUD
Retailer 1$2,254 AUD
Retailer 2$2,416 AUD
Retailer 8$2,419 AUD
Retailer 18$2,532 AUD
Retailer 13$2,572 AUD
Retailer 14$2,761 AUD
Retailer 12$3,385 AUD
Retailer 15$4,010 AUD

28 data points across 18 retailers

17 retailers$1,546 AUD to $3,385 AUD

Retailer 1
-
$1,285 AUD
Price last confirmed 63 days ago
Retailer 2
-
$1,461 AUD
View
Price last confirmed 52 days ago
B+
Retailer 3
-
$1,546 AUD
View
Final sale: no returns
B+
Retailer 4
-
$1,604 AUD
View
B+
Retailer 5
-
$1,608 AUD
View
Retailer 6
-
$1,675 AUD
View
Price last confirmed 36 days ago
B+
Retailer 7
-
$1,808 AUD
View
B+
Retailer 8
-
$1,994 AUD
View
B+
Retailer 9
-
$2,078 AUD
View
B
Retailer 10
-
$2,254 AUD
View
Retailer 11
-
$2,416 AUD
View
Price last confirmed 33 days ago
B
Retailer 12
-
$2,532 AUD
View
B
Retailer 13
-
$2,572 AUD
View
B
Retailer 14
-
$2,761 AUD
View
B
Retailer 15
-
$3,385 AUD
View
Retailer 16
-
$4,010 AUD
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
23158efa-4603-4e98-812b-f0ada46a9a1d · Sep 15
$4,055 AUD
$2,786 USD
View
Price last confirmed 52 days ago
16 more retailers have this diamond
Prices start from $1,546 AUDSave up to $1,840 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+
0.73ct Round
$1,546 AUD