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Marquise|Natural|GIA

0.51ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 7502337009

Certificate GIA 7502337009

Diamond specifications and retailer prices

From $976 AUD
As of November 4, 2026
Save $1,271 AUD (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,946 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 7502337009. Listed at 11 retailers as of November 4, 2026, with a 130% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7502337009
Dimensions8.55 × 4.16 × 2.37 mm
L/W Ratio2.06
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
8.55 mm4.16 mm0.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7502337009
Side View
Table 59.0%CrownGirdle: ThickPavilionCulet: NoneDepth 57.0%

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 4
Current: $3,946 AUD|Low: $887 AUD|High: $3,946 AUD|Avg: $1,684 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6$976 AUD
Retailer 8$1,259 AUD
Retailer 9$1,259 AUD
Retailer 7$1,307 AUD
Retailer 2$1,364 AUD
Retailer 11$1,447 AUD
Retailer 10$1,451 AUD
Retailer 3$1,477 AUD
Retailer 5$1,774 AUD
Retailer 4$2,247 AUD
NZ Jewellers$3,946 AUD

42 data points across 11 retailers

11 retailers$976 AUD to $2,247 AUD

A
Cheapest Retailer
-
$976 AUD
Final sale: no returns
B+
Retailer 2
-
$1,259 AUD
View
Retailer 3
-
$1,259 AUD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$1,284 AUD
View
B+
Retailer 5
-
$1,307 AUD
View
B+
Retailer 6
-
$1,364 AUD
View
B+
Retailer 7
-
$1,447 AUD
View
B+
Retailer 8
-
$1,451 AUD
View
B
Retailer 9
-
$1,774 AUD
View
B
Retailer 10
-
$2,247 AUD
View
Most Expensive
NZ Jewellers
b4297967-478c-45f5-aba3-157b3546cbb6 · Nov 5
$3,946 AUD
$2,762 USD
View
Price under review
10 more retailers have this diamond
Prices start from $976 AUDSave up to $1,271 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
$976 AUD