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Marquise|Natural|GIA

0.51ct I IF Marquise Natural Diamond

ID • I/IF • GIA 6545669394

Certificate GIA 6545669394

Diamond specifications and retailer prices

From $949 AUD
As of November 5, 2026
Save $2,024 AUD (68%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,973 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 6545669394. Listed at 13 retailers as of November 5, 2026, with prices from $949 to $2,973, a $2,024 spread on the same certified stone. NZ Jewellers lists it at $2,973. 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
Crown angle38.16°
Pavilion angle40.39°
OriginNatural
Grading LabGIA
CertificateGIA 6545669394
Dimensions4.12 × 8.25 × 2.59 mm
L/W Ratio2.00
Top View
4.12 mm8.25 mm0.51 ctI / IF
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6545669394
Side View
Table 60.0%Crown 38.16°Girdle: Slightly ThickPavilion 40.39°Culet: NoneDepth 62.9%

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 5
Current: $2,973 AUD|Low: $949 AUD|High: $3,088 AUD|Avg: $1,364 AUD|-3.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 10$949 AUD
Retailer 4$966 AUD
Retailer 8$985 AUD
Retailer 3$1,003 AUD
Retailer 2$1,064 AUD
Retailer 13$1,094 AUD
Retailer 12$1,135 AUD
Retailer 9$1,140 AUD
Retailer 6$1,157 AUD
Retailer 7$1,215 AUD
Retailer 5$1,480 AUD
Retailer 11$2,189 AUD
NZ Jewellers$2,973 AUD

36 data points across 13 retailers

13 retailers$949 AUD to $2,973 AUD

A
Cheapest Retailer
-
$949 AUD
Retailer 2
-
$966 AUD
View
Price last confirmed 9 days ago
A
Retailer 3
-
$985 AUD
View
A
Retailer 4
-
$1,003 AUD
View
A
Retailer 5
-
$1,064 AUD
View
A
Retailer 6
-
$1,094 AUD
View
A
Retailer 7
-
$1,135 AUD
View
A
Retailer 8
-
$1,140 AUD
View
A
Retailer 9
-
$1,157 AUD
View
A
Retailer 10
-
$1,215 AUD
View
Retailer 11
-
$1,480 AUD
View
Price last confirmed 34 days ago
B+
Retailer 12
-
$2,189 AUD
View
Most Expensive
B
NZ Jewellers
a3bd01fd-366e-4e87-8313-d088c73557f9 · Nov 5
$2,973 AUD
$2,043 USD
View
12 more retailers have this diamond
Prices start from $949 AUDSave up to $2,024 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
$949 AUD