Marquise|Natural|GIA

0.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 2556419943

Certificate GIA 2556419943

Diamond specifications and retailer prices

From $497 USD
As of November 6, 2026
Save $1,623 USD (77%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $2,120 USD at NZ Jewellers · As of October 17, 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 2556419943. Listed at 24 retailers as of November 5, 2026, with a 327% 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556419943
Dimensions7.48 × 4.19 × 2.73 mm
L/W Ratio1.79
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Indented Natural
Top View
7.48 mm4.19 mm0.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556419943
Side View
Table 59.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 65.1%

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: $497 USD|Low: $497 USD|High: $1,576 USD|Avg: $881 USD|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 1$497 USD
Retailer 10$623 USD
Retailer 7$676 USD
Retailer 8$680 USD
Retailer 4$825 USD
Retailer 9$860 USD
Retailer 3$957 USD
Retailer 2$1,016 USD
Retailer 5$1,043 USD
Retailer 6$1,559 USD

37 data points across 10 retailers

24 retailers$497 USD to $2,120 USD

A
Cheapest Retailer
-
$497 USD
A
Retailer 2
-
$623 USD
View
Final sale: no returns
A
Retailer 3
-
$640 USD
View
Retailer 4
-
$676 USD
View
Price last confirmed 39 days ago
Retailer 5
-
$676 USD
View
Price last confirmed 8 days ago
Retailer 6
-
$676 USD
View
Price last confirmed 19 days ago
Retailer 7
-
$676 USD
View
Price last confirmed 8 days ago
Retailer 8
-
$676 USD
View
Price last confirmed 21 days ago
A
Retailer 9
-
$680 USD
View
Retailer 10
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$702 USD
View
Price last confirmed 20 days ago
Retailer 11
-
$780 USD
View
Price last confirmed 38 days ago
Retailer 12
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$780 USD
View
Price last confirmed 28 days ago
B+
Retailer 13
-
$808 USD
View
B+
Retailer 14
-
$825 USD
View
B+
Retailer 15
-
$860 USD
View
Retailer 16
-
$874 USD
View
Price last confirmed 41 days ago
B+
Retailer 17
-
$928 USD
View
B+
Retailer 18
-
$957 USD
View
Retailer 19
-
$1,016 USD
View
Price last confirmed 33 days ago
B+
Retailer 20
-
$1,043 USD
View
B
Retailer 21
-
$1,559 USD
View
Retailer 22
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$2,120 USD
View
Price last confirmed 39 days ago
B
Retailer 23
-
$2,120 USD
View
Most Expensive
NZ Jewellers
4efd96dc-3d7a-453b-89aa-88280ee104e8 · Oct 17
$2,120 USD
View
Price last confirmed 19 days ago
23 more retailers have this diamond
Prices start from $497 USDSave up to $1,623 USD

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
$497 USD