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Marquise|Natural|GIA

0.51ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 1568415063

Certificate GIA 1568415063

Diamond specifications and retailer prices

From $758 AUD
As of November 6, 2026
Save $1,207 AUD (61%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,369 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1568415063. Listed at 11 retailers as of November 4, 2026, with a 159% 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

0.51
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1568415063
Dimensions7.96 × 4.17 × 2.63 mm
L/W Ratio1.91
Girdle conditionVery Thick
Top View
7.96 mm4.17 mm0.51 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1568415063
Side View
Table 56.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 63.0%

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: $1,276 AUD|Low: $799 AUD|High: $1,992 AUD|Avg: $1,285 AUD|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 2$799 AUD
Retailer 6$982 AUD
Retailer 7$1,092 AUD
Retailer 1$1,276 AUD
Retailer 3$1,276 AUD
Retailer 4$1,514 AUD
Retailer 5$1,965 AUD

31 data points across 7 retailers

11 retailers$758 AUD to $1,965 AUD

A
Cheapest Retailer
-
$758 AUD
Final sale: no returns
A
Retailer 2
-
$799 AUD
View
Retailer 3
-
$982 AUD
View
Price last confirmed 20 days ago
B+
Retailer 4
-
$1,092 AUD
View
B+
Retailer 5
-
$1,236 AUD
View
B+
Retailer 6
-
$1,266 AUD
View
B+
Retailer 7
-
$1,276 AUD
View
B+
Retailer 8
-
$1,276 AUD
View
B+
Retailer 9
-
$1,514 AUD
View
B
Retailer 10
-
$1,965 AUD
View
Most Expensive
NZ Jewellers
90ecfe96-ec6a-4556-8cca-2b43e5702c51 · Nov 5
$3,369 AUD
$2,315 USD
View
Price under review
10 more retailers have this diamond
Prices start from $758 AUDSave up to $1,207 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
$758 AUD