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Marquise|Natural|GIA

0.51ct I IF Marquise Natural Diamond

ID • I/IF • GIA 2566451612

Certificate GIA 2566451612

Diamond specifications and retailer prices

From $931 AUD
As of November 6, 2026
Save $3,163 AUD (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,094 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 I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566451612. Listed at 10 retailers as of November 5, 2026, with prices from $931 to $4,094, a $3,163 spread on the same certified stone. NZ Jewellers lists it at $4,094. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
I
Colour
IF
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566451612
Dimensions8.91 × 4.06 × 2.50 mm
L/W Ratio2.19
Top View
8.91 mm4.06 mm0.51 ctI / IF
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566451612
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 61.4%

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: $4,094 AUD|Low: $931 AUD|High: $4,094 AUD|Avg: $1,648 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 3$931 AUD
Retailer 10$1,204 AUD
Retailer 8$1,205 AUD
Retailer 6$1,297 AUD
Retailer 4$1,464 AUD
Retailer 7$1,535 AUD
Retailer 9$1,554 AUD
Retailer 5$1,725 AUD
Retailer 2$1,853 AUD
NZ Jewellers$4,094 AUD

4 data points across 10 retailers

10 retailers$931 AUD to $4,094 AUD

A
Cheapest Retailer
-
$931 AUD
A
Retailer 2
-
$1,204 AUD
View
A
Retailer 3
-
$1,205 AUD
View
Final sale: no returns
A
Retailer 4
-
$1,297 AUD
View
B+
Retailer 5
-
$1,464 AUD
View
B+
Retailer 6
-
$1,535 AUD
View
B+
Retailer 7
-
$1,554 AUD
View
B+
Retailer 8
-
$1,725 AUD
View
B+
Retailer 9
-
$1,853 AUD
View
Most Expensive
B
NZ Jewellers
ee8320f4-5afc-4598-b56d-783cec31fe20 · Nov 5
$4,094 AUD
$2,813 USD
View
9 more retailers have this diamond
Prices start from $931 AUDSave up to $3,163 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
$931 AUD