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Marquise|Natural|GIA

0.51ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 1567415074

Certificate GIA 1567415074

Diamond specifications and retailer prices

From $784 AUD
As of November 6, 2026
Save $1,237 AUD (61%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,481 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 1567415074. Listed at 11 retailers as of November 6, 2026, with a 158% 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 1567415074
Dimensions8.13 × 4.25 × 2.61 mm
L/W Ratio1.91
Girdle conditionVery Thick
Top View
8.13 mm4.25 mm0.51 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1567415074
Side View
Table 57.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 61.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,022 AUD|Low: $825 AUD|High: $2,043 AUD|Avg: $1,333 AUD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 3$825 AUD
Retailer 6$1,126 AUD
Retailer 4$1,319 AUD
Retailer 2$1,320 AUD
Retailer 5$1,563 AUD
Retailer 1$2,022 AUD

31 data points across 6 retailers

11 retailers$784 AUD to $2,022 AUD

A
Cheapest Retailer
-
$784 AUD
Final sale: no returns
A
Retailer 2
-
$825 AUD
View
Retailer 3
-
$1,019 AUD
View
Price last confirmed 19 days ago
B+
Retailer 4
-
$1,126 AUD
View
B+
Retailer 5
-
$1,268 AUD
View
B+
Retailer 6
-
$1,303 AUD
View
B+
Retailer 7
-
$1,319 AUD
View
B+
Retailer 8
-
$1,320 AUD
View
B+
Retailer 9
-
$1,563 AUD
View
B
Retailer 10
-
$2,022 AUD
View
Most Expensive
NZ Jewellers
f9b0e7a9-88f2-4fac-abcd-6248f25589b8 · Nov 5
$3,481 AUD
$2,392 USD
View
Price under review
10 more retailers have this diamond
Prices start from $784 AUDSave up to $1,237 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
$784 AUD