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Marquise|Natural|GIA

0.51ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 7568379781

Certificate GIA 7568379781

Diamond specifications and retailer prices

From $675 AUD
As of November 6, 2026
Save $1,450 AUD (68%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $2,126 AUD at MOH London · As of November 4, 2026
View at MOH London

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 7568379781. Listed at 8 retailers as of November 4, 2026, with prices from $675 to $2,126, a $1,450 spread on the same certified stone. MOH London lists it at $2,126. 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
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 7568379781
Dimensions7.61 × 4.14 × 2.65 mm
L/W Ratio1.84
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Twinning Wisp, Crystal
Top View
7.61 mm4.14 mm0.51 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 7568379781
Side View
Table 60.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 64.1%

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: $2,126 AUD|Low: $675 AUD|High: $2,408 AUD|Avg: $1,230 AUD|-11.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2$675 AUD
Retailer 5$782 AUD
Retailer 8$953 AUD
Retailer 7$1,074 AUD
Retailer 4$1,124 AUD
Retailer 6$1,154 AUD
Retailer 3$1,349 AUD
MOH London$2,126 AUD

41 data points across 8 retailers

8 retailers$675 AUD to $2,126 AUD

A
Cheapest Retailer
-
$675 AUD
A
Retailer 2
-
$782 AUD
View
Retailer 3
-
$953 AUD
View
Price last confirmed 20 days ago
A
Retailer 4
-
$1,074 AUD
View
B+
Retailer 5
-
$1,124 AUD
View
B+
Retailer 6
-
$1,154 AUD
View
B+
Retailer 7
-
$1,349 AUD
View
Most Expensive
B
MOH London
3DC62B40C · Nov 4
$2,126 AUD
£1,150 GBP
View
7 more retailers have this diamond
Prices start from $675 AUDSave up to $1,450 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
$675 AUD