Round|Natural|GIA

0.73ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6512390405

Certificate GIA 6512390405

Diamond specifications and retailer prices

From £554 GBP
HK$5,800 HKD
As of October 30, 2026
Save £558 GBP (50%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,901 GBP 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £856 GBP|Low: £513 GBP|High: £1,124 GBP|Avg: £715 GBP|+6.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 28, 2026
Retailer 11£543 GBP
Retailer 7£554 GBP
Retailer 6£559 GBP
Retailer 9£615 GBP
Retailer 2£668 GBP
Retailer 10£672 GBP
Retailer 8£705 GBP
Retailer 4£721 GBP
Retailer 1£856 GBP
Retailer 3£866 GBP
Retailer 5£1,112 GBP

37 data points across 11 retailers

13 retailers£554 GBP to £1,112 GBP

A
Cheapest Retailer
-
£554 GBP
HK$5,800 HKD
A
Retailer 2
-
£559 GBP
$749 USD
View
Final sale: no returns
Retailer 3
-
£606 GBP
$812 USD
View
Price last confirmed 23 days ago
Retailer 4
-
£606 GBP
$812 USD
View
Price last confirmed 23 days ago
B+
Retailer 5
-
£615 GBP
$824 USD
View
Retailer 6
-
£629 GBP
$843 USD
View
Price last confirmed 31 days ago
B+
Retailer 7
-
£672 GBP
$900 USD
View
Retailer 8
-
£699 GBP
$937 USD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
£705 GBP
$945 USD
View
B+
Retailer 10
-
£721 GBP
View
B+
Retailer 11
-
£856 GBP
€1,092 EUR
View
B
Retailer 12
-
£1,112 GBP
View
Most Expensive
NZ Jewellers
c2f89733-606c-4710-a258-8aa54c6076f6 · Sep 26
£1,901 GBP
$2,547 USD
View
Price last confirmed 34 days ago
12 more retailers have this diamond
Prices start from £554 GBPSave up to £558 GBP

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
£554 GBP