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Marquise|Natural|GIA

0.73ct J SI2 Marquise Natural Diamond

EX • J/SI2

Diamond specifications and retailer prices

From £575 GBP
$770 USD
As of November 1, 2026
Save £370 GBP (39%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £945 GBP at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 0.73ct natural marquise diamond

This 0.73ct natural marquise 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 stated by the retailer rather than the lab and certified by GIA. Listed at 3 retailers as of November 1, 2026, with prices from £575 to £945, a £370 spread on the same certified stone. Helzberg Diamonds lists it at £945. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions8.75 × 4.62 × 2.96 mm
L/W Ratio1.89
Top View
8.75 mm4.62 mm0.73 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 64.1%

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: Nov 1
Current: £945 GBP|Low: £575 GBP|High: £967 GBP|Avg: £773 GBP|-2.3%
Helzberg Diamonds
Retailer 2
Retailer 3
November 1, 2026
Retailer 2£575 GBP
Retailer 3£665 GBP
Helzberg Diamonds£945 GBP

7 data points across 3 retailers

3 retailers£575 GBP to £945 GBP

A
Cheapest Retailer
-
£575 GBP
$770 USD
B+
Retailer 2
-
£665 GBP
$891 USD
View
Most Expensive
B
Helzberg Diamonds
XZRLIKIGMKJNO · Nov 1
£945 GBP
$1,266 USD
View
2 more retailers have this diamond
Prices start from £575 GBPSave up to £370 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 Marquise
£575 GBP