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Round|Natural|GIA

0.73ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6512390405

Certificate GIA 6512390405

Diamond specifications and retailer prices

From $1,057 AUD
HK$5,800 HKD
As of October 30, 2026
Save $1,064 AUD (50%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,626 AUD at NZ Jewellers · As of September 26, 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6512390405. Listed at 13 retailers as of October 26, 2026, with a 101% 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
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6512390405
Dimensions5.75 × 5.71 × 3.59 mm
L/W Ratio1.01
Top View
5.75 mm5.71 mm0.73 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6512390405
Side View
Table 57.0%CrownGirdle: ThickPavilionCulet: NoneDepth 62.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,384 AUD|Low: $978 AUD|High: $2,144 AUD|Avg: $1,364 AUD|+8.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 11$1,035 AUD
Retailer 7$1,057 AUD
Retailer 6$1,066 AUD
Retailer 9$1,173 AUD
Retailer 2$1,274 AUD
Retailer 10$1,281 AUD
Retailer 8$1,345 AUD
Retailer 1$1,384 AUD
Retailer 4$1,637 AUD
Retailer 3$1,651 AUD
Retailer 5$2,121 AUD

39 data points across 11 retailers

13 retailers$1,057 AUD to $2,121 AUD

A
Cheapest Retailer
-
$1,057 AUD
HK$5,800 HKD
A
Retailer 2
-
$1,066 AUD
$749 USD
View
Final sale: no returns
Retailer 3
-
$1,156 AUD
$812 USD
View
Price last confirmed 23 days ago
Retailer 4
-
$1,156 AUD
$812 USD
View
Price last confirmed 23 days ago
B+
Retailer 5
-
$1,173 AUD
$824 USD
View
Retailer 6
-
$1,200 AUD
$843 USD
View
Price last confirmed 31 days ago
B+
Retailer 7
-
$1,281 AUD
$900 USD
View
Retailer 8
-
$1,334 AUD
$937 USD
View
Price last confirmed 22 days ago
B+
Retailer 9
-
$1,345 AUD
$945 USD
View
B+
Retailer 10
-
$1,384 AUD
£766 GBP
View
B
Retailer 11
-
$1,637 AUD
€1,095 EUR
View
B
Retailer 12
-
$2,121 AUD
£1,173 GBP
View
Most Expensive
NZ Jewellers
c2f89733-606c-4710-a258-8aa54c6076f6 · Sep 26
$3,626 AUD
$2,547 USD
View
Price last confirmed 34 days ago
12 more retailers have this diamond
Prices start from $1,057 AUDSave up to $1,064 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.

A
0.73ct Round
$1,057 AUD