Marquise|Natural|GIA

0.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6555094150

Certificate GIA 6555094150

Diamond specifications and retailer prices

From €444 EUR
As of November 6, 2026
Save €1,087 EUR (71%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,818 EUR at MOH London · As of November 2, 2026
View at MOH London

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 6555094150. Listed at 15 retailers as of November 5, 2026, with a 245% 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555094150
Dimensions7.74 × 4.17 × 2.63 mm
L/W Ratio1.86
Top View
7.74 mm4.17 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555094150
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.1%

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: Nov 6
Current: €1,818 EUR|Low: €421 EUR|High: €1,818 EUR|Avg: €835 EUR
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 7, 2026
Retailer 6€444 EUR
Retailer 7€804 EUR
Retailer 4€886 EUR
Retailer 2€890 EUR
Retailer 9€916 EUR
Retailer 12€992 EUR
Retailer 3€1,076 EUR
Retailer 13€1,115 EUR
Retailer 5€1,146 EUR
Retailer 10€1,218 EUR
Retailer 11€1,271 EUR
Retailer 8€1,532 EUR
MOH London€1,818 EUR

43 data points across 13 retailers

15 retailers€444 EUR to €1,532 EUR

A
Cheapest Retailer
-
€444 EUR
A
Retailer 2
-
€537 EUR
View
B+
Retailer 3
-
€697 EUR
View
B+
Retailer 4
-
€804 EUR
View
B
Retailer 5
-
€886 EUR
View
B
Retailer 6
-
€890 EUR
View
B
Retailer 7
-
€916 EUR
View
Final sale: no returns
B
Retailer 8
-
€992 EUR
View
B
Retailer 9
-
€1,076 EUR
View
B
Retailer 10
-
€1,115 EUR
View
B
Retailer 11
-
€1,146 EUR
View
B
Retailer 12
-
€1,218 EUR
View
B
Retailer 13
-
€1,271 EUR
View
C
Retailer 14
-
€1,532 EUR
View
Most Expensive
MOH London
14E2BB29A · Nov 2
€1,818 EUR
£1,598 GBP
View
Price under review
14 more retailers have this diamond
Prices start from €444 EURSave up to €1,087 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.

A
0.50ct Marquise
€444 EUR