Marquise|Natural|GIA

0.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6555338540

Certificate GIA 6555338540

Diamond specifications and retailer prices

From €576 EUR
As of November 6, 2026
Save €859 EUR (60%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €1,961 EUR at NZ Jewellers · As of November 5, 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 I 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 6555338540. Listed at 16 retailers as of November 6, 2026, with a 149% 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle33.34°
OriginNatural
Grading LabGIA
CertificateGIA 6555338540
Dimensions8.34 × 4.09 × 2.57 mm
L/W Ratio2.04
Culet sizeNone
Key to symbols
Feather
Top View
8.34 mm4.09 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555338540
Side View
Table 61.0%Crown 33.34°GirdlePavilionCulet: NoneDepth 62.8%

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 6
Current: €1,435 EUR|Low: €528 EUR|High: €1,460 EUR|Avg: €829 EUR|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 8€576 EUR
Retailer 10€591 EUR
Retailer 2€649 EUR
Retailer 3€729 EUR
Retailer 5€763 EUR
Retailer 4€764 EUR
Retailer 9€788 EUR
Retailer 7€885 EUR
Retailer 11€940 EUR
Retailer 6€965 EUR
Retailer 1€1,435 EUR

39 data points across 11 retailers

16 retailers€576 EUR to €1,435 EUR

B+
Cheapest Retailer
-
€576 EUR
Final sale: no returns
B+
Retailer 2
-
€591 EUR
View
Retailer 3
-
€625 EUR
View
Price last confirmed 9 days ago
B+
Retailer 4
-
€625 EUR
View
B+
Retailer 5
-
€649 EUR
View
B+
Retailer 6
-
€721 EUR
View
B
Retailer 7
-
€729 EUR
View
B
Retailer 8
-
€743 EUR
View
B
Retailer 9
-
€763 EUR
View
B
Retailer 10
-
€764 EUR
View
B
Retailer 11
-
€788 EUR
View
B
Retailer 12
-
€885 EUR
View
Retailer 13
-
€940 EUR
View
Price last confirmed 34 days ago
B
Retailer 14
-
€965 EUR
View
B
Retailer 15
-
€1,435 EUR
View
Most Expensive
NZ Jewellers
24905fea-0709-49c9-a767-e1aae4dd5287 · Nov 5
€1,961 EUR
$2,189 USD
View
Price under review
15 more retailers have this diamond
Prices start from €576 EURSave up to €859 EUR

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
€576 EUR