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Marquise|Natural|GIA

0.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2547244543

Certificate GIA 2547244543

Diamond specifications and retailer prices

From $965 AUD
$678 USD
As of October 31, 2026
Save $2,163 AUD (69%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,267 AUD at NZ Jewellers · As of September 25, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2547244543. Listed at 16 retailers as of October 30, 2026, with a 224% 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle39.4°
OriginNatural
Grading LabGIA
CertificateGIA 2547244543
Dimensions8.64 × 4.22 × 2.45 mm
L/W Ratio2.05
Top View
8.64 mm4.22 mm0.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2547244543
Side View
Table 61.0%CrownGirdle: MED-THKPavilion 39.4°Culet: NoneDepth 58.1%

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: Oct 31
Current: $1,291 AUD|Low: $698 AUD|High: $3,128 AUD|Avg: $1,315 AUD|+8.3%
Retailer 1
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
Retailer 18
Retailer 19
Retailer 20
November 1, 2026
Retailer 3$867 AUD
Retailer 10$875 AUD
Retailer 16$965 AUD
Retailer 5$968 AUD
Retailer 2$1,032 AUD
Retailer 11$1,062 AUD
Retailer 7$1,073 AUD
Retailer 17$1,207 AUD
Retailer 18$1,239 AUD
Retailer 19$1,239 AUD
Retailer 4$1,281 AUD
Retailer 20$1,281 AUD
Retailer 1$1,291 AUD
Retailer 8$1,346 AUD
Retailer 12$1,523 AUD
Retailer 9$1,543 AUD
Retailer 13$1,555 AUD
Retailer 6$1,587 AUD
Retailer 14$1,978 AUD
Retailer 15$3,128 AUD

33 data points across 20 retailers

16 retailers$965 AUD to $3,128 AUD

Retailer 1
-
$875 AUD
HK$4,800 HKD
Price last confirmed 27 days ago
A
Retailer 2
-
$965 AUD
$678 USD
View
Retailer 3
-
$1,032 AUD
€690 EUR
View
Price last confirmed 26 days ago
Retailer 4
-
$1,062 AUD
$746 USD
View
Price last confirmed 31 days ago
Retailer 5
-
$1,073 AUD
SGD 1,019 SGD
View
Price last confirmed 26 days ago
B+
Retailer 6
-
$1,207 AUD
$848 USD
View
B+
Retailer 7
-
$1,239 AUD
$870 USD
View
B+
Retailer 8
-
$1,239 AUD
$870 USD
View
B+
Retailer 9
-
$1,281 AUD
$900 USD
View
B+
Retailer 10
-
$1,291 AUD
£714 GBP
View
B
Retailer 11
-
$1,523 AUD
€1,019 EUR
View
Retailer 12
-
$1,543 AUD
View
Price last confirmed 28 days ago
Retailer 13
-
$1,587 AUD
ZAR 18,005 ZAR
View
Price last confirmed 28 days ago
B
Retailer 14
-
$1,978 AUD
£1,094 GBP
View
B
Retailer 15
-
$3,128 AUD
CA$3,052 CAD
View
Most Expensive
NZ Jewellers
8d672b14-9f32-4c3d-a605-a25855dcacd1 · Sep 25
$3,267 AUD
$2,295 USD
View
Price last confirmed 37 days ago
15 more retailers have this diamond
Prices start from $965 AUDSave up to $2,163 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
$965 AUD