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Marquise|Natural|GIA

0.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6555094150

Certificate GIA 6555094150

Diamond specifications and retailer prices

From $722 AUD
As of November 6, 2026
Save $1,767 AUD (71%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,954 AUD at MOH London · As of November 2, 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 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 6555094150. Listed at 15 retailers as of November 5, 2026, with a 245% 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555094150
Dimensions7.74 × 4.17 × 2.63 mm
L/W Ratio1.86
Top View
7.74 mm4.17 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555094150
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.1%

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: $2,954 AUD|Low: $684 AUD|High: $2,954 AUD|Avg: $1,305 AUD
MOH London
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
November 6, 2026
Retailer 2$722 AUD
Retailer 6$1,132 AUD
Retailer 7$1,307 AUD
Retailer 8$1,438 AUD
Retailer 4$1,439 AUD
Retailer 10$1,489 AUD
Retailer 13$1,613 AUD
Retailer 3$1,748 AUD
Retailer 14$1,812 AUD
Retailer 5$1,861 AUD
Retailer 11$1,979 AUD
Retailer 12$2,065 AUD
Retailer 9$2,489 AUD
MOH London$2,954 AUD

42 data points across 14 retailers

15 retailers$722 AUD to $2,489 AUD

A
Cheapest Retailer
-
$722 AUD
A
Retailer 2
-
$873 AUD
View
B+
Retailer 3
-
$1,132 AUD
View
B+
Retailer 4
-
$1,307 AUD
View
B
Retailer 5
-
$1,438 AUD
View
B
Retailer 6
-
$1,439 AUD
View
B
Retailer 7
-
$1,489 AUD
View
Final sale: no returns
B
Retailer 8
-
$1,613 AUD
View
B
Retailer 9
-
$1,748 AUD
View
B
Retailer 10
-
$1,812 AUD
View
B
Retailer 11
-
$1,861 AUD
View
B
Retailer 12
-
$1,979 AUD
View
B
Retailer 13
-
$2,065 AUD
View
C
Retailer 14
-
$2,489 AUD
View
Most Expensive
MOH London
14E2BB29A · Nov 2
$2,954 AUD
£1,598 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $722 AUDSave up to $1,767 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
$722 AUD