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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 $1,102 NZD
₹59,174 INR
As of October 31, 2026
Save $1,577 NZD (59%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $4,562 NZD 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: $4,562 NZD|Low: $1,090 NZD|High: $4,562 NZD|Avg: $1,773 NZD
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$1,102 NZD
Retailer 13$1,113 NZD
Retailer 12$1,299 NZD
Retailer 6$1,341 NZD
Retailer 5$1,446 NZD
Retailer 3$1,455 NZD
Retailer 19$1,455 NZD
Retailer 7$1,476 NZD
Retailer 20$1,510 NZD
Retailer 11$1,536 NZD
Retailer 4$1,678 NZD
Retailer 9$1,690 NZD
Retailer 8$1,698 NZD
Retailer 10$1,748 NZD
Retailer 14$1,751 NZD
Retailer 17$1,791 NZD
Retailer 15$2,057 NZD
Retailer 16$2,246 NZD
Retailer 18$2,679 NZD
NZ Jewellers$4,562 NZD

26 data points across 20 retailers

22 retailers$1,102 NZD to $2,679 NZD

A
Cheapest Retailer
-
$1,102 NZD
₹59,174 INR
A
Retailer 2
-
$1,113 NZD
HK$4,900 HKD
View
A
Retailer 3
-
$1,299 NZD
$732 USD
View
A
Retailer 4
-
$1,341 NZD
$756 USD
View
Final sale: no returns
A
Retailer 5
-
$1,369 NZD
A$1,187 AUD
View
Retailer 6
-
$1,446 NZD
$815 USD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$1,455 NZD
$820 USD
View
A
Retailer 8
-
$1,455 NZD
$820 USD
View
B+
Retailer 9
-
$1,476 NZD
$832 USD
View
B+
Retailer 10
-
$1,510 NZD
$851 USD
View
B+
Retailer 11
-
$1,536 NZD
SGD 1,170 SGD
View
B+
Retailer 12
-
$1,678 NZD
$946 USD
View
B+
Retailer 13
-
$1,690 NZD
$953 USD
View
B+
Retailer 14
-
$1,698 NZD
$957 USD
View
B+
Retailer 15
-
$1,748 NZD
$985 USD
View
B+
Retailer 16
-
$1,751 NZD
£777 GBP
View
B+
Retailer 17
-
$1,791 NZD
£795 GBP
View
B+
Retailer 18
-
$2,057 NZD
€1,104 EUR
View
Retailer 19
-
$2,223 NZD
A$1,927 AUD
View
Price last confirmed 27 days ago
B+
Retailer 20
-
$2,246 NZD
ZAR 20,447 ZAR
View
B
Retailer 21
-
$2,679 NZD
£1,189 GBP
View
Most Expensive
NZ Jewellers
3f724734-06cf-487f-9645-3f0ba00e4b40 · Oct 30
$4,562 NZD
$2,571 USD
View
Price under review
21 more retailers have this diamond
Prices start from $1,102 NZDSave up to $1,577 NZD

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
$1,102 NZD