CaratHunter
Plans
Marquise|Natural|GIA

0.51ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 1548875593

Certificate GIA 1548875593

Diamond specifications and retailer prices

From $734 AUD
As of November 6, 2026
Save $2,214 AUD (75%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,948 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 E 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 1548875593. Listed at 17 retailers as of November 5, 2026, with prices from $734 to $2,948, a $2,214 spread on the same certified stone. NZ Jewellers lists it at $2,948. 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
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1548875593
Dimensions9.03 × 3.97 × 2.55 mm
L/W Ratio2.27
Girdle conditionFaceted
Key to symbols
Crystal, Twinning Wisp, Feather
Top View
9.03 mm3.97 mm0.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1548875593
Side View
Table 58.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 64.2%

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: $2,948 AUD|Low: $734 AUD|High: $2,948 AUD|Avg: $1,216 AUD
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 2$734 AUD
Retailer 8$786 AUD
Retailer 4$867 AUD
Retailer 7$940 AUD
Retailer 16$940 AUD
Retailer 6$976 AUD
Retailer 17$976 AUD
Retailer 9$981 AUD
Retailer 15$1,084 AUD
Retailer 10$1,116 AUD
Retailer 3$1,134 AUD
Retailer 11$1,147 AUD
Retailer 14$1,177 AUD
Retailer 5$1,344 AUD
Retailer 13$1,373 AUD
Retailer 12$2,167 AUD
NZ Jewellers$2,948 AUD

26 data points across 17 retailers

17 retailers$734 AUD to $2,948 AUD

A
Cheapest Retailer
-
$734 AUD
A
Retailer 2
-
$786 AUD
View
A
Retailer 3
-
$867 AUD
View
Final sale: no returns
A
Retailer 4
-
$940 AUD
View
Retailer 5
-
$940 AUD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$976 AUD
View
A
Retailer 7
-
$976 AUD
View
A
Retailer 8
-
$981 AUD
View
A
Retailer 9
-
$1,084 AUD
View
A
Retailer 10
-
$1,116 AUD
View
B+
Retailer 11
-
$1,134 AUD
View
A
Retailer 12
-
$1,147 AUD
View
Retailer 13
-
$1,177 AUD
View
Price last confirmed 7 days ago
B+
Retailer 14
-
$1,344 AUD
View
B+
Retailer 15
-
$1,373 AUD
View
B
Retailer 16
-
$2,167 AUD
View
Most Expensive
B
NZ Jewellers
67c3dd16-cd7b-49fa-a791-6fb67108466d · Nov 5
$2,948 AUD
$2,064 USD
View
16 more retailers have this diamond
Prices start from $734 AUDSave up to $2,214 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
$734 AUD