Round|Natural|GIA

0.73ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6512390405

Certificate GIA 6512390405

Diamond specifications and retailer prices

From $1,329 NZD
$749 USD
As of October 31, 2026
Save $1,314 NZD (50%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,519 NZD 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 99% 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 31
Current: $1,340 NZD|Low: $1,219 NZD|High: $2,672 NZD|Avg: $1,701 NZD|+1.7%
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$1,290 NZD
Retailer 7$1,329 NZD
Retailer 1$1,340 NZD
Retailer 9$1,462 NZD
Retailer 2$1,588 NZD
Retailer 10$1,597 NZD
Retailer 8$1,677 NZD
Retailer 4$1,725 NZD
Retailer 5$2,040 NZD
Retailer 3$2,058 NZD
Retailer 6$2,643 NZD

38 data points across 11 retailers

13 retailers$1,329 NZD to $2,643 NZD

A
Cheapest Retailer
-
$1,329 NZD
$749 USD
Final sale: no returns
A
Retailer 2
-
$1,340 NZD
HK$5,900 HKD
View
Retailer 3
-
$1,441 NZD
$812 USD
View
Price last confirmed 24 days ago
Retailer 4
-
$1,441 NZD
$812 USD
View
Price last confirmed 24 days ago
B+
Retailer 5
-
$1,462 NZD
$824 USD
View
Retailer 6
-
$1,496 NZD
$843 USD
View
Price last confirmed 32 days ago
B+
Retailer 7
-
$1,597 NZD
$900 USD
View
Retailer 8
-
$1,663 NZD
$937 USD
View
Price last confirmed 22 days ago
B+
Retailer 9
-
$1,677 NZD
$945 USD
View
B+
Retailer 10
-
$1,725 NZD
£766 GBP
View
B+
Retailer 11
-
$2,040 NZD
€1,095 EUR
View
B
Retailer 12
-
$2,643 NZD
£1,173 GBP
View
Most Expensive
NZ Jewellers
c2f89733-606c-4710-a258-8aa54c6076f6 · Sep 26
$4,519 NZD
$2,547 USD
View
Price last confirmed 35 days ago
12 more retailers have this diamond
Prices start from $1,329 NZDSave up to $1,314 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.

A
0.73ct Round
$1,329 NZD