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Marquise|Natural|GIA

0.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 1555452594

Certificate GIA 1555452594

Diamond specifications and retailer prices

From $1,608 NZD
$905 USD
As of November 1, 2026
Save $1,527 NZD (49%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $4,712 NZD at NZ Jewellers · As of October 30, 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 D 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 1555452594. Listed at 24 retailers as of November 1, 2026, with a 95% 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555452594
Dimensions8.80 × 4.01 × 2.54 mm
L/W Ratio2.19
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Feather
Top View
8.80 mm4.01 mm0.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555452594
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: 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: $4,712 NZD|Low: $1,100 NZD|High: $4,712 NZD|Avg: $2,094 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
November 2, 2026
Retailer 16$1,535 NZD
Retailer 13$1,608 NZD
Retailer 18$1,616 NZD
Retailer 11$1,624 NZD
Retailer 8$1,712 NZD
Retailer 4$1,713 NZD
Retailer 22$1,719 NZD
Retailer 23$1,731 NZD
Retailer 3$1,751 NZD
Retailer 10$1,751 NZD
Retailer 20$1,818 NZD
Retailer 21$1,982 NZD
Retailer 17$2,017 NZD
Retailer 5$2,019 NZD
Retailer 12$2,133 NZD
Retailer 15$2,133 NZD
Retailer 6$2,177 NZD
Retailer 2$2,183 NZD
Retailer 14$2,204 NZD
Retailer 9$2,517 NZD
Retailer 19$2,526 NZD
Retailer 7$3,135 NZD
NZ Jewellers$4,712 NZD

44 data points across 23 retailers

24 retailers$1,608 NZD to $3,135 NZD

Retailer 1
-
$1,160 NZD
HK$5,100 HKD
Price last confirmed 59 days ago
B+
Retailer 2
-
$1,608 NZD
$905 USD
View
B+
Retailer 3
-
$1,616 NZD
$909 USD
View
Final sale: no returns
B+
Retailer 4
-
$1,624 NZD
$914 USD
View
B+
Retailer 5
-
$1,712 NZD
$963 USD
View
B+
Retailer 6
-
$1,713 NZD
$964 USD
View
B+
Retailer 7
-
$1,719 NZD
$967 USD
View
B+
Retailer 8
-
$1,731 NZD
$974 USD
View
B+
Retailer 9
-
$1,734 NZD
A$1,501 AUD
View
B+
Retailer 10
-
$1,751 NZD
$985 USD
View
B+
Retailer 11
-
$1,751 NZD
$985 USD
View
B+
Retailer 12
-
$1,818 NZD
$1,023 USD
View
B+
Retailer 13
-
$1,982 NZD
$1,115 USD
View
B
Retailer 14
-
$2,017 NZD
$1,135 USD
View
B+
Retailer 15
-
$2,019 NZD
$1,136 USD
View
B
Retailer 16
-
$2,133 NZD
$1,200 USD
View
B
Retailer 17
-
$2,133 NZD
$1,200 USD
View
B
Retailer 18
-
$2,177 NZD
$1,225 USD
View
B
Retailer 19
-
$2,183 NZD
£967 GBP
View
B
Retailer 20
-
$2,204 NZD
$1,240 USD
View
B
Retailer 21
-
$2,517 NZD
$1,416 USD
View
Retailer 22
-
$2,526 NZD
A$2,187 AUD
View
Price last confirmed 28 days ago
B
Retailer 23
-
$3,135 NZD
CA$2,450 CAD
View
Most Expensive
NZ Jewellers
f3be42e8-93e5-40cc-b751-f593e0ae7a41 · Oct 30
$4,712 NZD
$2,651 USD
View
Price under review
23 more retailers have this diamond
Prices start from $1,608 NZDSave up to $1,527 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+
0.50ct Marquise
$1,608 NZD