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Marquise|Natural|GIA

0.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 5566202579

Certificate GIA 5566202579

Diamond specifications and retailer prices

From €498 EUR
As of November 6, 2026
Save €1,193 EUR (71%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €1,691 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 5566202579. Listed at 16 retailers as of November 5, 2026, with prices from €498 to €1,691, a €1,193 spread on the same certified stone. NZ Jewellers lists it at €1,691. 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 5566202579
Dimensions8.01 × 4.19 × 2.39 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal
Top View
8.01 mm4.19 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5566202579
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 57.1%

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: €1,691 EUR|Low: €498 EUR|High: €1,716 EUR|Avg: €749 EUR|-1.5%
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
November 7, 2026
Retailer 5€498 EUR
Retailer 7€511 EUR
Retailer 12€539 EUR
Retailer 3€551 EUR
Retailer 14€580 EUR
Retailer 4€581 EUR
Retailer 15€622 EUR
Retailer 8€656 EUR
Retailer 10€657 EUR
Retailer 9€657 EUR
Retailer 6€712 EUR
Retailer 11€793 EUR
Retailer 13€832 EUR
Retailer 2€1,239 EUR
NZ Jewellers€1,691 EUR

25 data points across 15 retailers

16 retailers€498 EUR to €1,691 EUR

A
Cheapest Retailer
-
€498 EUR
Final sale: no returns
A
Retailer 2
-
€511 EUR
View
A
Retailer 3
-
€539 EUR
View
Retailer 4
-
€551 EUR
View
Price last confirmed 10 days ago
A
Retailer 5
-
€580 EUR
View
Retailer 6
-
€581 EUR
View
Price last confirmed 9 days ago
B+
Retailer 7
-
€622 EUR
View
B+
Retailer 8
-
€656 EUR
View
B+
Retailer 9
-
€657 EUR
View
B+
Retailer 10
-
€657 EUR
View
B
Retailer 11
-
€712 EUR
View
B+
Retailer 12
-
€793 EUR
View
B+
Retailer 13
-
€832 EUR
View
Retailer 14
-
€838 EUR
View
Price last confirmed 33 days ago
B
Retailer 15
-
€1,239 EUR
View
Most Expensive
B
NZ Jewellers
5f9e60fc-e73c-476b-a924-7d86aaa3e94e · Nov 5
€1,691 EUR
$1,888 USD
View
15 more retailers have this diamond
Prices start from €498 EURSave up to €1,193 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
€498 EUR