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Marquise|Natural|GIA

0.51ct F SI2 Marquise Natural Diamond

VG • F/SI2 • GIA 6565139322

Certificate GIA 6565139322

Diamond specifications and retailer prices

From $886 AUD
As of November 6, 2026
Save $617 AUD (41%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,504 AUD at Frank Darling · As of November 6, 2026
View at Frank Darling

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6565139322. Listed at 9 retailers as of November 6, 2026, with prices from $886 to $1,504, a $617 spread on the same certified stone. Frank Darling lists it at $1,504. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
F
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565139322
Dimensions7.90 × 4.17 × 2.65 mm
L/W Ratio1.89
Culet sizeNone
Top View
7.90 mm4.17 mm0.51 ctF / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6565139322
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.4%

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: $1,504 AUD|Low: $886 AUD|High: $1,504 AUD|Avg: $1,149 AUD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10$886 AUD
Retailer 7$897 AUD
Retailer 8$910 AUD
Retailer 5$1,041 AUD
Retailer 9$1,153 AUD
Retailer 3$1,237 AUD
Retailer 6$1,252 AUD
Retailer 2$1,300 AUD
Retailer 4$1,327 AUD
Frank Darling$1,504 AUD

30 data points across 10 retailers

9 retailers$886 AUD to $1,504 AUD

A
Cheapest Retailer
-
$886 AUD
Retailer 2
-
$910 AUD
View
Price last confirmed 31 days ago
B+
Retailer 3
-
$1,041 AUD
View
B+
Retailer 4
-
$1,153 AUD
View
B+
Retailer 5
-
$1,237 AUD
View
Retailer 6
-
$1,252 AUD
View
Price last confirmed 10 days ago
B
Retailer 7
-
$1,300 AUD
View
B
Retailer 8
-
$1,327 AUD
View
Most Expensive
B
Frank Darling
2679412HK · Nov 6
$1,504 AUD
$1,033 USD
View
8 more retailers have this diamond
Prices start from $886 AUDSave up to $617 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
0.51ct Marquise
$886 AUD