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Marquise|Natural|GIA

0.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 5566277388

Certificate GIA 5566277388

Diamond specifications and retailer prices

From €422 EUR
As of November 6, 2026
Save €1,161 EUR (73%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €1,583 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 5566277388. Listed at 18 retailers as of November 5, 2026, with prices from €422 to €1,583, a €1,161 spread on the same certified stone. NZ Jewellers lists it at €1,583. 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
SymmetryGood
FluorescenceFaint
Crown angle42.3°
Pavilion angle34°
OriginNatural
Grading LabGIA
CertificateGIA 5566277388
Dimensions7.51 × 4.21 × 2.47 mm
L/W Ratio1.78
Girdle conditionFaceted
Culet sizeNone
Top View
7.51 mm4.21 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 5566277388
Side View
Table 60.0%Crown 42.3°Girdle: THK-VTKPavilion 34°Culet: NoneDepth 58.8%

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: €1,583 EUR|Low: €361 EUR|High: €1,583 EUR|Avg: €615 EUR|+7.0%
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
Retailer 17
Retailer 18
Retailer 19
November 7, 2026
Retailer 4€364 EUR
Retailer 11€412 EUR
Retailer 18€422 EUR
Retailer 9€434 EUR
Retailer 19€458 EUR
Retailer 2€493 EUR
Retailer 3€497 EUR
Retailer 17€497 EUR
Retailer 7€506 EUR
Retailer 10€510 EUR
Retailer 16€528 EUR
Retailer 8€585 EUR
Retailer 5€605 EUR
Retailer 13€612 EUR
Retailer 14€616 EUR
Retailer 15€677 EUR
Retailer 6€723 EUR
Retailer 12€1,159 EUR
NZ Jewellers€1,583 EUR

25 data points across 19 retailers

18 retailers€422 EUR to €1,583 EUR

Retailer 1
-
€364 EUR
Price last confirmed 12 days ago
Retailer 2
-
€412 EUR
View
Price last confirmed 11 days ago
A
Retailer 3
-
€422 EUR
View
Final sale: no returns
Retailer 4
-
€434 EUR
View
Price last confirmed 17 days ago
A
Retailer 5
-
€458 EUR
View
A
Retailer 6
-
€493 EUR
View
A
Retailer 7
-
€497 EUR
View
A
Retailer 8
-
€497 EUR
View
Retailer 9
-
€506 EUR
View
Price last confirmed 13 days ago
Retailer 10
-
€510 EUR
View
Price last confirmed 11 days ago
A
Retailer 11
-
€528 EUR
View
B+
Retailer 12
-
€612 EUR
View
B+
Retailer 13
-
€616 EUR
View
B+
Retailer 14
-
€677 EUR
View
Retailer 15
-
€723 EUR
View
Price last confirmed 12 days ago
Retailer 16
-
€751 EUR
View
Price last confirmed 34 days ago
B
Retailer 17
-
€1,159 EUR
View
Most Expensive
C
NZ Jewellers
5d455ea6-a4b4-4a43-970c-4a09e1015088 · Nov 5
€1,583 EUR
$1,767 USD
View
17 more retailers have this diamond
Prices start from €422 EURSave up to €1,161 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
€422 EUR