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Marquise|Natural|GIA

0.50ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 2564439864

Certificate GIA 2564439864

Diamond specifications and retailer prices

From $277 USD
As of November 6, 2026
Save $644 USD (70%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $921 USD at MOH London · As of November 4, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2564439864. Listed at 7 retailers as of November 4, 2026, with prices from $277 to $921, a $644 spread on the same certified stone. MOH London lists it at $921. 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
K
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2564439864
Dimensions9.01 × 4.04 × 2.33 mm
L/W Ratio2.23
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Knot
Top View
9.01 mm4.04 mm0.50 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2564439864
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 57.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $921 USD|Low: $277 USD|High: $933 USD|Avg: $512 USD|-1.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2$277 USD
Retailer 7$345 USD
Retailer 5$444 USD
Retailer 4$517 USD
Retailer 6$529 USD
Retailer 3$600 USD
MOH London$921 USD

38 data points across 7 retailers

7 retailers$277 USD to $921 USD

A
Cheapest Retailer
-
$277 USD
A
Retailer 2
-
$345 USD
View
A
Retailer 3
-
$444 USD
View
B+
Retailer 4
-
$517 USD
View
A
Retailer 5
-
$529 USD
View
B+
Retailer 6
-
$600 USD
View
Most Expensive
B
MOH London
0B115068E · Nov 4
$921 USD
£725 GBP
View
6 more retailers have this diamond
Prices start from $277 USDSave up to $644 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
$277 USD