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Marquise|Natural|GIA

0.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 1549578318

Certificate GIA 1549578318

Diamond specifications and retailer prices

From €859 EUR
$963 USD
As of November 1, 2026
Save €917 EUR (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €2,364 EUR at NZ Jewellers · As of October 30, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1549578318. Listed at 21 retailers as of November 1, 2026, with a 107% 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1549578318
Dimensions7.66 × 4.21 × 2.61 mm
L/W Ratio1.82
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
7.66 mm4.21 mm0.50 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1549578318
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.9%

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 1
Current: €2,364 EUR|Low: €860 EUR|High: €2,364 EUR|Avg: €1,301 EUR
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
November 2, 2026
Retailer 13€868 EUR
Retailer 3€878 EUR
Retailer 12€912 EUR
Retailer 9€987 EUR
Retailer 10€1,012 EUR
Retailer 5€1,092 EUR
Retailer 6€1,095 EUR
Retailer 2€1,256 EUR
Retailer 11€1,267 EUR
Retailer 8€1,496 EUR
Retailer 4€1,573 EUR
Retailer 7€1,775 EUR
NZ Jewellers€2,364 EUR

43 data points across 13 retailers

21 retailers€859 EUR to €1,775 EUR

B+
Cheapest Retailer
-
€859 EUR
$963 USD
B+
Retailer 2
-
€859 EUR
$964 USD
View
B+
Retailer 3
-
€868 EUR
$974 USD
View
B+
Retailer 4
-
€870 EUR
A$1,501 AUD
View
B+
Retailer 5
-
€878 EUR
$985 USD
View
B+
Retailer 6
-
€878 EUR
$985 USD
View
B+
Retailer 7
-
€912 EUR
$1,023 USD
View
B+
Retailer 8
-
€987 EUR
$1,107 USD
View
B
Retailer 9
-
€1,012 EUR
$1,135 USD
View
B+
Retailer 10
-
€1,013 EUR
$1,136 USD
View
B
Retailer 11
-
€1,070 EUR
$1,200 USD
View
B
Retailer 12
-
€1,070 EUR
$1,200 USD
View
B
Retailer 13
-
€1,092 EUR
$1,225 USD
View
B
Retailer 14
-
€1,095 EUR
£967 GBP
View
B
Retailer 15
-
€1,106 EUR
$1,240 USD
View
B
Retailer 16
-
€1,256 EUR
View
Retailer 17
-
€1,267 EUR
A$2,187 AUD
View
Price last confirmed 29 days ago
B
Retailer 18
-
€1,496 EUR
ZAR 27,109 ZAR
View
B
Retailer 19
-
€1,573 EUR
CA$2,450 CAD
View
B
Retailer 20
-
€1,775 EUR
£1,568 GBP
View
Most Expensive
NZ Jewellers
fd89eb10-e512-4bea-bb36-f1c932654ce7 · Oct 30
€2,364 EUR
$2,651 USD
View
Price under review
20 more retailers have this diamond
Prices start from €859 EURSave up to €917 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
€859 EUR