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Marquise|Natural|GIA

0.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6552974932

Certificate GIA 6552974932

Diamond specifications and retailer prices

From $885 AUD
₹59,174 INR
As of October 31, 2026
Save $1,265 AUD (59%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,660 AUD at NZ Jewellers · As of October 30, 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 6552974932. Listed at 22 retailers as of October 29, 2026, with a 143% 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552974932
Dimensions8.17 × 4.19 × 2.55 mm
L/W Ratio1.95
Culet sizeNone
Key to symbols
Feather
Top View
8.17 mm4.19 mm0.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552974932
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.9%

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: Oct 31
Current: $3,660 AUD|Low: $875 AUD|High: $3,660 AUD|Avg: $1,423 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
Retailer 18
Retailer 19
Retailer 20
October 31, 2026
Retailer 2$885 AUD
Retailer 13$893 AUD
Retailer 12$1,042 AUD
Retailer 6$1,076 AUD
Retailer 5$1,160 AUD
Retailer 3$1,167 AUD
Retailer 19$1,167 AUD
Retailer 7$1,184 AUD
Retailer 20$1,211 AUD
Retailer 11$1,233 AUD
Retailer 4$1,347 AUD
Retailer 9$1,356 AUD
Retailer 8$1,362 AUD
Retailer 10$1,402 AUD
Retailer 14$1,405 AUD
Retailer 17$1,437 AUD
Retailer 15$1,650 AUD
Retailer 16$1,802 AUD
Retailer 18$2,150 AUD
NZ Jewellers$3,660 AUD

26 data points across 20 retailers

22 retailers$885 AUD to $2,150 AUD

A
Cheapest Retailer
-
$885 AUD
₹59,174 INR
A
Retailer 2
-
$893 AUD
HK$4,900 HKD
View
A
Retailer 3
-
$1,042 AUD
$732 USD
View
A
Retailer 4
-
$1,076 AUD
$756 USD
View
Final sale: no returns
A
Retailer 5
-
$1,099 AUD
View
Retailer 6
-
$1,160 AUD
$815 USD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$1,167 AUD
$820 USD
View
A
Retailer 8
-
$1,167 AUD
$820 USD
View
B+
Retailer 9
-
$1,184 AUD
$832 USD
View
B+
Retailer 10
-
$1,211 AUD
$851 USD
View
B+
Retailer 11
-
$1,233 AUD
SGD 1,170 SGD
View
B+
Retailer 12
-
$1,347 AUD
$946 USD
View
B+
Retailer 13
-
$1,356 AUD
$953 USD
View
B+
Retailer 14
-
$1,362 AUD
$957 USD
View
B+
Retailer 15
-
$1,402 AUD
$985 USD
View
B+
Retailer 16
-
$1,405 AUD
£777 GBP
View
B+
Retailer 17
-
$1,437 AUD
£795 GBP
View
B+
Retailer 18
-
$1,650 AUD
€1,104 EUR
View
Retailer 19
-
$1,783 AUD
View
Price last confirmed 27 days ago
B+
Retailer 20
-
$1,802 AUD
ZAR 20,447 ZAR
View
B
Retailer 21
-
$2,150 AUD
£1,189 GBP
View
Most Expensive
NZ Jewellers
3f724734-06cf-487f-9645-3f0ba00e4b40 · Oct 30
$3,660 AUD
$2,571 USD
View
Price under review
21 more retailers have this diamond
Prices start from $885 AUDSave up to $1,265 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
$885 AUD