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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 $809 AUD
As of November 6, 2026
Save $1,939 AUD (71%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,748 AUD 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 $809 to $2,748, a $1,939 spread on the same certified stone. NZ Jewellers lists it at $2,748. 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: $2,748 AUD|Low: $809 AUD|High: $2,789 AUD|Avg: $1,217 AUD|-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 6, 2026
Retailer 5$809 AUD
Retailer 7$830 AUD
Retailer 11$876 AUD
Retailer 3$895 AUD
Retailer 13$943 AUD
Retailer 4$945 AUD
Retailer 15$1,012 AUD
Retailer 10$1,065 AUD
Retailer 8$1,067 AUD
Retailer 2$1,068 AUD
Retailer 6$1,157 AUD
Retailer 9$1,288 AUD
Retailer 12$1,352 AUD
Retailer 14$2,020 AUD
NZ Jewellers$2,748 AUD

25 data points across 15 retailers

16 retailers$809 AUD to $2,748 AUD

A
Cheapest Retailer
-
$809 AUD
Final sale: no returns
A
Retailer 2
-
$830 AUD
View
A
Retailer 3
-
$876 AUD
View
Retailer 4
-
$895 AUD
View
Price last confirmed 10 days ago
A
Retailer 5
-
$943 AUD
View
Retailer 6
-
$945 AUD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$1,012 AUD
View
B+
Retailer 8
-
$1,065 AUD
View
B+
Retailer 9
-
$1,067 AUD
View
B+
Retailer 10
-
$1,068 AUD
View
B
Retailer 11
-
$1,157 AUD
View
B+
Retailer 12
-
$1,288 AUD
View
B+
Retailer 13
-
$1,352 AUD
View
Retailer 14
-
$1,362 AUD
View
Price last confirmed 33 days ago
B
Retailer 15
-
$2,020 AUD
View
Most Expensive
B
NZ Jewellers
5f9e60fc-e73c-476b-a924-7d86aaa3e94e · Nov 5
$2,748 AUD
$1,888 USD
View
15 more retailers have this diamond
Prices start from $809 AUDSave up to $1,939 AUD

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
$809 AUD