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Marquise|Natural|GIA

0.51ct E SI2 Marquise Natural Diamond

GD • E/SI2 • GIA 6515228594

Certificate GIA 6515228594

Diamond specifications and retailer prices

From $1,654 NZD
As of November 1, 2026
Save $1,973 NZD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,846 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6515228594. Listed at 18 retailers as of November 1, 2026, with a 119% 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
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6515228594
Dimensions8.63 × 4.00 × 2.54 mm
L/W Ratio2.16
Top View
8.63 mm4.00 mm0.51 ctE / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6515228594
Side View
Table 58.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 63.4%

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: Nov 1
Current: $2,562 NZD|Low: $1,384 NZD|High: $3,682 NZD|Avg: $2,248 NZD|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4$1,654 NZD
Retailer 5$1,661 NZD
Retailer 6$1,766 NZD
Retailer 2$2,241 NZD
Retailer 1$2,562 NZD
Retailer 3$3,627 NZD

44 data points across 6 retailers

18 retailers$1,654 NZD to $3,627 NZD

B+
Cheapest Retailer
-
$1,654 NZD
B+
Retailer 2
-
$1,661 NZD
View
Final sale: no returns
B
Retailer 3
-
$1,759 NZD
View
B
Retailer 4
-
$1,759 NZD
View
B
Retailer 5
-
$1,766 NZD
View
Retailer 6
-
$1,800 NZD
View
Price last confirmed 8 days ago
B
Retailer 7
-
$1,800 NZD
View
B
Retailer 8
-
$1,870 NZD
View
B
Retailer 9
-
$2,076 NZD
View
B
Retailer 10
-
$2,188 NZD
View
B
Retailer 11
-
$2,188 NZD
View
B
Retailer 12
-
$2,240 NZD
View
B
Retailer 13
-
$2,241 NZD
View
B
Retailer 14
-
$2,259 NZD
View
B
Retailer 15
-
$2,562 NZD
View
C
Retailer 16
-
$3,225 NZD
View
B
Retailer 17
-
$3,627 NZD
View
Most Expensive
NZ Jewellers
029c039f-5a5a-4872-8f70-5be64ca9e69e · Nov 5
$4,846 NZD
$2,724 USD
View
Price under review
17 more retailers have this diamond
Prices start from $1,654 NZDSave up to $1,973 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
$1,654 NZD