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Marquise|Natural|GIA

0.50ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 6551294218

Certificate GIA 6551294218

Diamond specifications and retailer prices

From $1,201 AUD
$842 USD
As of November 1, 2026
Save $1,265 AUD (51%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,466 AUD at MOH London · As of November 1, 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 F 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 6551294218. Listed at 18 retailers as of November 1, 2026, with prices from $1,201 to $2,466, a $1,265 spread on the same certified stone. MOH London lists it at $2,466. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle32.67°
OriginNatural
Grading LabGIA
CertificateGIA 6551294218
Dimensions8.23 × 4.25 × 2.55 mm
L/W Ratio1.94
Key to symbols
Feather
Top View
8.23 mm4.25 mm0.50 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551294218
Side View
Table 64.0%Crown 32.67°Girdle: STK-VTKPavilionCulet: NoneDepth 60.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $2,466 AUD|Low: $1,139 AUD|High: $4,222 AUD|Avg: $1,770 AUD|-1.2%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 3, 2026
Retailer 18$1,201 AUD
Retailer 15$1,241 AUD
Retailer 8$1,346 AUD
Retailer 10$1,346 AUD
Retailer 16$1,360 AUD
Retailer 4$1,398 AUD
Retailer 5$1,460 AUD
Retailer 6$1,536 AUD
Retailer 9$1,554 AUD
Retailer 17$1,562 AUD
Retailer 2$1,563 AUD
Retailer 14$1,572 AUD
Retailer 11$1,653 AUD
Retailer 12$1,895 AUD
Retailer 3$2,024 AUD
Retailer 13$2,078 AUD
MOH London$2,466 AUD
Retailer 7$4,222 AUD

36 data points across 18 retailers

18 retailers$1,201 AUD to $2,466 AUD

B+
Cheapest Retailer
-
$1,201 AUD
$842 USD
B+
Retailer 2
-
$1,241 AUD
$870 USD
View
Final sale: no returns
B+
Retailer 3
-
$1,346 AUD
$943 USD
View
B+
Retailer 4
-
$1,346 AUD
$943 USD
View
B
Retailer 5
-
$1,360 AUD
$953 USD
View
B
Retailer 6
-
$1,398 AUD
$980 USD
View
B+
Retailer 7
-
$1,460 AUD
$1,023 USD
View
B
Retailer 8
-
$1,536 AUD
$1,077 USD
View
B
Retailer 9
-
$1,554 AUD
$1,089 USD
View
B
Retailer 10
-
$1,562 AUD
$1,095 USD
View
B
Retailer 11
-
$1,563 AUD
£862 GBP
View
B
Retailer 12
-
$1,572 AUD
$1,102 USD
View
B
Retailer 13
-
$1,653 AUD
£912 GBP
View
B
Retailer 14
-
$1,895 AUD
€1,265 EUR
View
Retailer 15
-
$2,024 AUD
View
Price last confirmed 30 days ago
B
Retailer 16
-
$2,078 AUD
ZAR 23,528 ZAR
View
Most Expensive
B
MOH London
C022C720D · Nov 1
$2,466 AUD
£1,361 GBP
View
16 more retailers have this diamond
Prices start from $1,201 AUDSave up to $1,265 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.

B+
0.50ct Marquise
$1,201 AUD