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Marquise|Natural|GIA

0.51ct E SI1 Marquise Natural Diamond

VG • E/SI1 • GIA 6545062248

Certificate GIA 6545062248

Diamond specifications and retailer prices

From $1,529 NZD
$862 USD
As of October 30, 2026
Save $2,211 NZD (59%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $5,376 NZD at NZ Jewellers · As of October 17, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6545062248. Listed at 18 retailers as of October 28, 2026, with a 145% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.73°
Pavilion angle41.46°
OriginNatural
Grading LabGIA
CertificateGIA 6545062248
Dimensions7.69 × 4.12 × 2.70 mm
L/W Ratio1.87
Top View
7.69 mm4.12 mm0.51 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545062248
Side View
Table 61.0%Crown 40.73°Girdle: MED-VTKPavilion 41.46°Culet: NoneDepth 65.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,008 NZD|Low: $1,583 NZD|High: $3,752 NZD|Avg: $2,507 NZD|+4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 8$1,583 NZD
Retailer 7$1,978 NZD
Retailer 1$2,008 NZD
Retailer 4$2,062 NZD
Retailer 2$2,413 NZD
Retailer 9$2,578 NZD
Retailer 3$2,647 NZD
Retailer 6$3,071 NZD
Retailer 5$3,741 NZD

38 data points across 9 retailers

18 retailers$1,529 NZD to $3,741 NZD

B+
Cheapest Retailer
-
$1,529 NZD
$862 USD
B+
Retailer 2
-
$1,583 NZD
$892 USD
View
Final sale: no returns
B+
Retailer 3
-
$1,678 NZD
$946 USD
View
Retailer 4
-
$1,714 NZD
$966 USD
View
Price last confirmed 16 days ago
Retailer 5
-
$1,714 NZD
$966 USD
View
Price last confirmed 11 days ago
Retailer 6
-
$1,781 NZD
$1,004 USD
View
Price last confirmed 15 days ago
B
Retailer 7
-
$1,951 NZD
$1,100 USD
View
Retailer 8
-
$1,978 NZD
$1,115 USD
View
Price last confirmed 60 days ago
B
Retailer 9
-
$1,978 NZD
$1,115 USD
View
Retailer 10
-
$1,978 NZD
$1,115 USD
View
Price last confirmed 13 days ago
B+
Retailer 11
-
$2,008 NZD
£891 GBP
View
B+
Retailer 12
-
$2,062 NZD
£915 GBP
View
B
Retailer 13
-
$2,413 NZD
€1,295 EUR
View
Retailer 14
-
$2,578 NZD
A$2,236 AUD
View
Price last confirmed 27 days ago
B
Retailer 15
-
$2,647 NZD
ZAR 24,099 ZAR
View
B
Retailer 16
-
$3,071 NZD
£1,363 GBP
View
B
Retailer 17
-
$3,741 NZD
£1,660 GBP
View
Most Expensive
NZ Jewellers
8972141a-a417-4250-8f54-dbca49b1ad38 · Oct 17
$5,376 NZD
$3,030 USD
View
Price under review
17 more retailers have this diamond
Prices start from $1,529 NZDSave up to $2,211 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.

B+
0.51ct Marquise
$1,529 NZD