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Marquise|Natural|GIA

0.51ct E SI1 Marquise Natural Diamond

ID • E/SI1 • GIA 3555796306

Certificate GIA 3555796306

Diamond specifications and retailer prices

From $1,663 NZD
$937 USD
As of October 30, 2026
Save $1,767 NZD (52%) vs most expensive(unlock to see where)
18 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 3555796306. Listed at 18 retailers as of October 25, 2026, with a 106% 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555796306
Dimensions8.83 × 4.00 × 2.46 mm
L/W Ratio2.21
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
8.83 mm4.00 mm0.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555796306
Side View
Table 57.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 61.7%

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: $4,562 NZD|Low: $1,663 NZD|High: $4,562 NZD|Avg: $2,428 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
October 31, 2026
Retailer 13$1,663 NZD
Retailer 3$1,694 NZD
Retailer 7$1,694 NZD
Retailer 11$1,712 NZD
Retailer 15$1,760 NZD
Retailer 4$1,955 NZD
Retailer 12$1,961 NZD
Retailer 6$2,106 NZD
Retailer 2$2,206 NZD
Retailer 8$2,428 NZD
Retailer 14$2,446 NZD
Retailer 9$2,888 NZD
Retailer 5$3,033 NZD
Retailer 10$3,430 NZD
NZ Jewellers$4,562 NZD

44 data points across 15 retailers

18 retailers$1,663 NZD to $3,430 NZD

B+
Cheapest Retailer
-
$1,663 NZD
$937 USD
B+
Retailer 2
-
$1,673 NZD
$943 USD
View
B+
Retailer 3
-
$1,684 NZD
A$1,460 AUD
View
B+
Retailer 4
-
$1,694 NZD
$955 USD
View
B+
Retailer 5
-
$1,694 NZD
$955 USD
View
B+
Retailer 6
-
$1,712 NZD
$965 USD
View
B+
Retailer 7
-
$1,760 NZD
$992 USD
View
B+
Retailer 8
-
$1,955 NZD
$1,102 USD
View
B+
Retailer 9
-
$1,961 NZD
$1,105 USD
View
B+
Retailer 10
-
$2,106 NZD
$1,187 USD
View
B+
Retailer 11
-
$2,206 NZD
£979 GBP
View
B
Retailer 12
-
$2,428 NZD
€1,303 EUR
View
Retailer 13
-
$2,446 NZD
A$2,121 AUD
View
Price last confirmed 26 days ago
B
Retailer 14
-
$2,450 NZD
$1,381 USD
View
B
Retailer 15
-
$2,888 NZD
ZAR 26,291 ZAR
View
B
Retailer 16
-
$3,033 NZD
CA$2,374 CAD
View
B
Retailer 17
-
$3,430 NZD
£1,522 GBP
View
Most Expensive
NZ Jewellers
d4932268-9316-440b-8c79-7fc8808db737 · Oct 30
$4,562 NZD
$2,571 USD
View
Price under review
17 more retailers have this diamond
Prices start from $1,663 NZDSave up to $1,767 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
$1,663 NZD