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Marquise|Natural|GIA

0.51ct F SI2 Marquise Natural Diamond

GD • F/SI2 • GIA 6552531907

Certificate GIA 6552531907

Diamond specifications and retailer prices

From $782 AUD
As of November 6, 2026
Save $2,109 AUD (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,890 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6552531907. Listed at 15 retailers as of November 5, 2026, with prices from $782 to $2,890, a $2,109 spread on the same certified stone. NZ Jewellers lists it at $2,890. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552531907
Dimensions8.34 × 4.13 × 2.58 mm
L/W Ratio2.02
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather
Top View
8.34 mm4.13 mm0.51 ctF / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552531907
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 62.5%

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: $1,124 AUD|Low: $782 AUD|High: $2,154 AUD|Avg: $1,155 AUD|+5.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 8$782 AUD
Retailer 6$850 AUD
Retailer 9$921 AUD
Retailer 5$945 AUD
Retailer 7$993 AUD
Retailer 1$1,124 AUD
Retailer 4$1,154 AUD
Retailer 3$1,351 AUD
Retailer 2$2,125 AUD

45 data points across 9 retailers

15 retailers$782 AUD to $2,890 AUD

A
Cheapest Retailer
-
$782 AUD
B+
Retailer 2
-
$850 AUD
View
Final sale: no returns
B+
Retailer 3
-
$921 AUD
View
B+
Retailer 4
-
$945 AUD
View
Retailer 5
-
$959 AUD
View
Price last confirmed 11 days ago
Retailer 6
-
$993 AUD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$993 AUD
View
Retailer 8
-
$1,064 AUD
View
Price last confirmed 62 days ago
B+
Retailer 9
-
$1,064 AUD
View
B+
Retailer 10
-
$1,113 AUD
View
B+
Retailer 11
-
$1,124 AUD
View
B+
Retailer 12
-
$1,154 AUD
View
B
Retailer 13
-
$1,351 AUD
View
B
Retailer 14
-
$2,125 AUD
View
Most Expensive
C
NZ Jewellers
f0449ea3-d67a-4071-9790-c0195c56378c · Nov 5
$2,890 AUD
$1,986 USD
View
14 more retailers have this diamond
Prices start from $782 AUDSave up to $2,109 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
$782 AUD