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Marquise|Natural|GIA

0.50ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 1548044206

Certificate GIA 1548044206

Diamond specifications and retailer prices

From £471 GBP
$632 USD
As of November 3, 2026
Save £729 GBP (61%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,629 GBP at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1548044206. Listed at 14 retailers as of November 2, 2026, with a 155% 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

0.50
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1548044206
Dimensions8.32 × 4.08 × 2.53 mm
L/W Ratio2.04
Key to symbols
Feather, Cloud
Top View
8.32 mm4.08 mm0.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 1548044206
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.0%

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: £1,629 GBP|Low: £362 GBP|High: £1,629 GBP|Avg: £728 GBP
NZ Jewellers
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
November 3, 2026
Retailer 15£362 GBP
Retailer 3£471 GBP
Retailer 8£480 GBP
Retailer 6£484 GBP
Retailer 4£507 GBP
Retailer 16£543 GBP
Retailer 14£577 GBP
Retailer 7£598 GBP
Retailer 12£611 GBP
Retailer 5£623 GBP
Retailer 2£642 GBP
Retailer 10£696 GBP
Retailer 11£802 GBP
Retailer 9£1,200 GBP
Retailer 13£1,494 GBP
NZ Jewellers£1,629 GBP

24 data points across 16 retailers

14 retailers£471 GBP to £1,200 GBP

B+
Cheapest Retailer
-
£471 GBP
$632 USD
B+
Retailer 2
-
£484 GBP
$650 USD
View
B+
Retailer 3
-
£507 GBP
$680 USD
View
B
Retailer 4
-
£543 GBP
$729 USD
View
B
Retailer 5
-
£577 GBP
$774 USD
View
B
Retailer 6
-
£598 GBP
$802 USD
View
B
Retailer 7
-
£611 GBP
$820 USD
View
B
Retailer 8
-
£623 GBP
$835 USD
View
B
Retailer 9
-
£642 GBP
View
B
Retailer 10
-
£696 GBP
€889 EUR
View
B
Retailer 11
-
£802 GBP
ZAR 17,384 ZAR
View
B
Retailer 12
-
£1,200 GBP
View
Retailer 13
-
£1,494 GBP
CA$2,785 CAD
View
Price under review
Most Expensive
NZ Jewellers
92e177b9-a25f-4889-a9b8-e24b7bbe50ef · Nov 3
£1,629 GBP
$2,186 USD
View
Price under review
13 more retailers have this diamond
Prices start from £471 GBPSave up to £729 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.

B+
0.50ct Marquise
£471 GBP