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Marquise|Natural|GIA

0.51ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 7502337009

Certificate GIA 7502337009

Diamond specifications and retailer prices

From $1,215 NZD
As of November 4, 2026
Save $1,583 NZD (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,913 NZD at NZ Jewellers · As of November 5, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7502337009. Listed at 11 retailers as of November 4, 2026, with a 130% 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7502337009
Dimensions8.55 × 4.16 × 2.37 mm
L/W Ratio2.06
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
8.55 mm4.16 mm0.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7502337009
Side View
Table 59.0%CrownGirdle: ThickPavilionCulet: NoneDepth 57.0%

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: Nov 4
Current: $4,913 NZD|Low: $1,105 NZD|High: $4,913 NZD|Avg: $2,097 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6$1,215 NZD
Retailer 8$1,567 NZD
Retailer 9$1,567 NZD
Retailer 7$1,628 NZD
Retailer 2$1,699 NZD
Retailer 11$1,802 NZD
Retailer 10$1,807 NZD
Retailer 3$1,839 NZD
Retailer 5$2,209 NZD
Retailer 4$2,798 NZD
NZ Jewellers$4,913 NZD

42 data points across 11 retailers

11 retailers$1,215 NZD to $2,798 NZD

A
Cheapest Retailer
-
$1,215 NZD
Final sale: no returns
B+
Retailer 2
-
$1,567 NZD
View
Retailer 3
-
$1,567 NZD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$1,599 NZD
View
B+
Retailer 5
-
$1,628 NZD
View
B+
Retailer 6
-
$1,699 NZD
View
B+
Retailer 7
-
$1,802 NZD
View
B+
Retailer 8
-
$1,807 NZD
View
B
Retailer 9
-
$2,209 NZD
View
B
Retailer 10
-
$2,798 NZD
View
Most Expensive
NZ Jewellers
b4297967-478c-45f5-aba3-157b3546cbb6 · Nov 5
$4,913 NZD
$2,762 USD
View
Price under review
10 more retailers have this diamond
Prices start from $1,215 NZDSave up to $1,583 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
$1,215 NZD