Marquise|Natural|GIA

0.50ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6555438330

Certificate GIA 6555438330

Diamond specifications and retailer prices

From $358 USD
As of November 4, 2026
Save $1,259 USD (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,617 USD 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 J 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 6555438330. Listed at 11 retailers as of November 4, 2026, with prices from $358 to $1,617, a $1,259 spread on the same certified stone. NZ Jewellers lists it at $1,617. 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
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555438330
Dimensions8.44 × 4.16 × 2.41 mm
L/W Ratio2.03
Girdle conditionThick to Very Thick
Key to symbols
Feather, Crystal
Top View
8.44 mm4.16 mm0.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555438330
Side View
Table 65.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 57.9%

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 4
Current: $1,617 USD|Low: $358 USD|High: $1,647 USD|Avg: $694 USD|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11$358 USD
Retailer 2$379 USD
Retailer 10$435 USD
Retailer 8$516 USD
Retailer 9$547 USD
Retailer 3$553 USD
Retailer 7$555 USD
Retailer 4$629 USD
Retailer 5$836 USD
Retailer 6$1,188 USD
NZ Jewellers$1,617 USD

28 data points across 11 retailers

11 retailers$358 USD to $1,617 USD

A
Cheapest Retailer
-
$358 USD
Final sale: no returns
A
Retailer 2
-
$379 USD
View
A
Retailer 3
-
$435 USD
View
A
Retailer 4
-
$516 USD
View
A
Retailer 5
-
$547 USD
View
Retailer 6
-
$553 USD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$555 USD
View
B+
Retailer 8
-
$629 USD
View
B+
Retailer 9
-
$836 USD
View
B
Retailer 10
-
$1,188 USD
View
Most Expensive
B
NZ Jewellers
62cd1bc3-5fc8-42e9-84af-cd8d77ad2090 · Nov 5
$1,617 USD
View
10 more retailers have this diamond
Prices start from $358 USDSave up to $1,259 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
$358 USD