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Marquise|Natural|GIA

0.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2547244543

Certificate GIA 2547244543

Diamond specifications and retailer prices

From $1,203 NZD
$678 USD
As of October 31, 2026
Save $2,696 NZD (69%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,072 NZD at NZ Jewellers · As of September 25, 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 2547244543. Listed at 16 retailers as of October 30, 2026, with a 224% 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
SymmetryExcellent
FluorescenceNone
Pavilion angle39.4°
OriginNatural
Grading LabGIA
CertificateGIA 2547244543
Dimensions8.64 × 4.22 × 2.45 mm
L/W Ratio2.05
Top View
8.64 mm4.22 mm0.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2547244543
Side View
Table 61.0%CrownGirdle: MED-THKPavilion 39.4°Culet: NoneDepth 58.1%

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: $1,609 NZD|Low: $869 NZD|High: $3,899 NZD|Avg: $1,643 NZD|+8.2%
Retailer 1
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
November 2, 2026
Retailer 3$1,081 NZD
Retailer 10$1,090 NZD
Retailer 16$1,203 NZD
Retailer 5$1,207 NZD
Retailer 2$1,286 NZD
Retailer 11$1,324 NZD
Retailer 7$1,338 NZD
Retailer 17$1,505 NZD
Retailer 18$1,544 NZD
Retailer 19$1,544 NZD
Retailer 4$1,597 NZD
Retailer 20$1,597 NZD
Retailer 1$1,609 NZD
Retailer 8$1,678 NZD
Retailer 12$1,898 NZD
Retailer 9$1,923 NZD
Retailer 13$1,938 NZD
Retailer 6$1,977 NZD
Retailer 14$2,465 NZD
Retailer 15$3,899 NZD

33 data points across 20 retailers

16 retailers$1,203 NZD to $3,899 NZD

Retailer 1
-
$1,090 NZD
HK$4,800 HKD
Price last confirmed 27 days ago
A
Retailer 2
-
$1,203 NZD
$678 USD
View
Retailer 3
-
$1,286 NZD
€690 EUR
View
Price last confirmed 27 days ago
Retailer 4
-
$1,324 NZD
$746 USD
View
Price last confirmed 31 days ago
Retailer 5
-
$1,338 NZD
SGD 1,019 SGD
View
Price last confirmed 27 days ago
B+
Retailer 6
-
$1,505 NZD
$848 USD
View
B+
Retailer 7
-
$1,544 NZD
$870 USD
View
B+
Retailer 8
-
$1,544 NZD
$870 USD
View
B+
Retailer 9
-
$1,597 NZD
$900 USD
View
B+
Retailer 10
-
$1,609 NZD
£714 GBP
View
B
Retailer 11
-
$1,898 NZD
€1,019 EUR
View
Retailer 12
-
$1,923 NZD
A$1,667 AUD
View
Price last confirmed 29 days ago
Retailer 13
-
$1,977 NZD
ZAR 18,005 ZAR
View
Price last confirmed 29 days ago
B
Retailer 14
-
$2,465 NZD
£1,094 GBP
View
B
Retailer 15
-
$3,899 NZD
CA$3,052 CAD
View
Most Expensive
NZ Jewellers
8d672b14-9f32-4c3d-a605-a25855dcacd1 · Sep 25
$4,072 NZD
$2,295 USD
View
Price last confirmed 37 days ago
15 more retailers have this diamond
Prices start from $1,203 NZDSave up to $2,696 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
$1,203 NZD