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Marquise|Natural|GIA

0.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 5566277388

Certificate GIA 5566277388

Diamond specifications and retailer prices

From $850 NZD
As of November 6, 2026
Save $2,338 NZD (73%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,187 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5566277388. Listed at 18 retailers as of November 5, 2026, with prices from $850 to $3,187, a $2,338 spread on the same certified stone. NZ Jewellers lists it at $3,187. 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

0.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryGood
FluorescenceFaint
Crown angle42.3°
Pavilion angle34°
OriginNatural
Grading LabGIA
CertificateGIA 5566277388
Dimensions7.51 × 4.21 × 2.47 mm
L/W Ratio1.78
Girdle conditionFaceted
Culet sizeNone
Top View
7.51 mm4.21 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 5566277388
Side View
Table 60.0%Crown 42.3°Girdle: THK-VTKPavilion 34°Culet: NoneDepth 58.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,187 NZD|Low: $727 NZD|High: $3,187 NZD|Avg: $1,235 NZD|+7.0%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 19$732 NZD
Retailer 11$830 NZD
Retailer 16$850 NZD
Retailer 9$875 NZD
Retailer 17$922 NZD
Retailer 15$1,001 NZD
Retailer 18$1,001 NZD
Retailer 6$1,019 NZD
Retailer 7$1,019 NZD
Retailer 10$1,026 NZD
Retailer 14$1,062 NZD
Retailer 8$1,178 NZD
Retailer 3$1,219 NZD
Retailer 13$1,225 NZD
Retailer 2$1,241 NZD
Retailer 12$1,364 NZD
Retailer 4$1,456 NZD
Retailer 5$2,186 NZD
NZ Jewellers$3,187 NZD

24 data points across 19 retailers

18 retailers$850 NZD to $3,187 NZD

Retailer 1
-
$732 NZD
Price last confirmed 12 days ago
Retailer 2
-
$830 NZD
View
Price last confirmed 11 days ago
A
Retailer 3
-
$850 NZD
View
Final sale: no returns
Retailer 4
-
$875 NZD
View
Price last confirmed 17 days ago
A
Retailer 5
-
$922 NZD
View
A
Retailer 6
-
$1,001 NZD
View
A
Retailer 7
-
$1,001 NZD
View
Retailer 8
-
$1,019 NZD
View
Price last confirmed 13 days ago
Retailer 9
-
$1,019 NZD
View
Price last confirmed 13 days ago
Retailer 10
-
$1,026 NZD
View
Price last confirmed 11 days ago
A
Retailer 11
-
$1,062 NZD
View
B+
Retailer 12
-
$1,225 NZD
View
B+
Retailer 13
-
$1,241 NZD
View
B+
Retailer 14
-
$1,364 NZD
View
Retailer 15
-
$1,456 NZD
View
Price last confirmed 12 days ago
Retailer 16
-
$1,513 NZD
View
Price last confirmed 34 days ago
Retailer 17
-
$2,186 NZD
View
Price last confirmed 13 days ago
Most Expensive
C
NZ Jewellers
5d455ea6-a4b4-4a43-970c-4a09e1015088 · Nov 5
$3,187 NZD
$1,767 USD
View
17 more retailers have this diamond
Prices start from $850 NZDSave up to $2,338 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
0.50ct Marquise
$850 NZD