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Marquise|Natural|GIA

0.51ct I IF Marquise Natural Diamond

EX • I/IF • GIA 6555311957

Certificate GIA 6555311957

Diamond specifications and retailer prices

From $993 AUD
As of November 6, 2026
Save $2,380 AUD (71%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,372 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 6555311957. Listed at 7 retailers as of November 5, 2026, with prices from $993 to $3,372, a $2,380 spread on the same certified stone. NZ Jewellers lists it at $3,372. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555311957
Dimensions9.15 × 3.94 × 2.44 mm
L/W Ratio2.32
Key to symbols
Surface Graining, Minor Details of Polish
Top View
9.15 mm3.94 mm0.51 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555311957
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.0%

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: $3,372 AUD|Low: $867 AUD|High: $3,949 AUD|Avg: $1,913 AUD|-14.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6$993 AUD
Retailer 2$1,205 AUD
Retailer 3$1,431 AUD
Retailer 7$1,482 AUD
Retailer 4$1,969 AUD
Retailer 5$2,173 AUD
NZ Jewellers$3,372 AUD

39 data points across 7 retailers

7 retailers$993 AUD to $3,372 AUD

A
Cheapest Retailer
-
$993 AUD
Final sale: no returns
A
Retailer 2
-
$1,205 AUD
View
A
Retailer 3
-
$1,431 AUD
View
B+
Retailer 4
-
$1,482 AUD
View
B+
Retailer 5
-
$1,969 AUD
View
B+
Retailer 6
-
$2,173 AUD
View
Most Expensive
B
NZ Jewellers
eee99ce7-3c5c-43e1-9748-6a5c0f2176a5 · Nov 5
$3,372 AUD
$2,317 USD
View
6 more retailers have this diamond
Prices start from $993 AUDSave up to $2,380 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
$993 AUD