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Marquise|Natural|GIA

0.51ct E SI1 Marquise Natural Diamond

ID • E/SI1 • GIA 6532891205

Certificate GIA 6532891205

Diamond specifications and retailer prices

From $1,396 NZD
$787 USD
As of October 31, 2026
Save $1,887 NZD (57%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $4,372 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 6532891205. Listed at 25 retailers as of October 31, 2026, with a 135% 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
SymmetryVery Good
FluorescenceNone
Pavilion angle42.2°
OriginNatural
Grading LabGIA
CertificateGIA 6532891205
Dimensions8.19 × 4.21 × 2.62 mm
L/W Ratio1.95
Top View
8.19 mm4.21 mm0.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6532891205
Side View
Table 61.0%CrownGirdle: MED-VTKPavilion 42.2°Culet: NoneDepth 62.2%

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: $4,372 NZD|Low: $1,396 NZD|High: $4,372 NZD|Avg: $2,257 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
November 1, 2026
Retailer 10$1,396 NZD
Retailer 13$1,613 NZD
Retailer 4$1,623 NZD
Retailer 5$1,623 NZD
Retailer 12$1,686 NZD
Retailer 3$1,874 NZD
Retailer 9$1,899 NZD
Retailer 6$2,101 NZD
Retailer 11$2,344 NZD
Retailer 7$2,519 NZD
Retailer 8$2,767 NZD
Retailer 2$3,283 NZD
NZ Jewellers$4,372 NZD

46 data points across 13 retailers

25 retailers$1,396 NZD to $3,283 NZD

A
Cheapest Retailer
-
$1,396 NZD
$787 USD
Final sale: no returns
B+
Retailer 2
-
$1,503 NZD
$847 USD
View
B+
Retailer 3
-
$1,593 NZD
$898 USD
View
B+
Retailer 4
-
$1,608 NZD
$906 USD
View
B+
Retailer 5
-
$1,613 NZD
$909 USD
View
B+
Retailer 6
-
$1,621 NZD
A$1,406 AUD
View
B+
Retailer 7
-
$1,623 NZD
$915 USD
View
B+
Retailer 8
-
$1,623 NZD
$915 USD
View
B+
Retailer 9
-
$1,643 NZD
$926 USD
View
B+
Retailer 10
-
$1,686 NZD
$950 USD
View
B+
Retailer 11
-
$1,802 NZD
$1,015 USD
View
B+
Retailer 12
-
$1,874 NZD
$1,056 USD
View
B
Retailer 13
-
$1,899 NZD
$1,070 USD
View
B+
Retailer 14
-
$1,987 NZD
$1,120 USD
View
B+
Retailer 15
-
$1,987 NZD
$1,120 USD
View
B+
Retailer 16
-
$2,016 NZD
$1,136 USD
View
B+
Retailer 17
-
$2,040 NZD
$1,150 USD
View
B+
Retailer 18
-
$2,101 NZD
£933 GBP
View
B
Retailer 19
-
$2,213 NZD
$1,247 USD
View
Retailer 20
-
$2,344 NZD
A$2,032 AUD
View
Price last confirmed 28 days ago
B
Retailer 21
-
$2,519 NZD
€1,352 EUR
View
B
Retailer 22
-
$2,767 NZD
ZAR 25,195 ZAR
View
B
Retailer 23
-
$2,903 NZD
CA$2,272 CAD
View
B
Retailer 24
-
$3,283 NZD
£1,457 GBP
View
Most Expensive
NZ Jewellers
55f901b7-fcb2-4052-92d0-b6ae44ff6f1d · Oct 30
$4,372 NZD
$2,464 USD
View
Price under review
24 more retailers have this diamond
Prices start from $1,396 NZDSave up to $1,887 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
$1,396 NZD