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Marquise|Natural|GIA

0.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 2546398602

Certificate GIA 2546398602

Diamond specifications and retailer prices

From $1,355 NZD
SGD 1,030 SGD
As of October 31, 2026
Save $2,036 NZD (60%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $4,516 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 2546398602. Listed at 22 retailers as of October 31, 2026, with a 150% 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
PolishVery Good
SymmetryGood
FluorescenceNone
Pavilion angle41.1°
OriginNatural
Grading LabGIA
CertificateGIA 2546398602
Dimensions8.16 × 4.24 × 2.58 mm
L/W Ratio1.92
Top View
8.16 mm4.24 mm0.50 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 2546398602
Side View
Table 62.0%CrownGirdle: MED-THKPavilion 41.1°Culet: NoneDepth 60.7%

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: $4,516 NZD|Low: $1,290 NZD|High: $4,516 NZD|Avg: $2,413 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 2, 2026
Retailer 10$1,355 NZD
Retailer 11$1,548 NZD
Retailer 3$1,678 NZD
Retailer 13$1,742 NZD
Retailer 9$1,946 NZD
Retailer 5$2,083 NZD
Retailer 6$2,165 NZD
Retailer 2$2,400 NZD
Retailer 12$2,421 NZD
Retailer 8$2,858 NZD
Retailer 4$3,001 NZD
Retailer 7$3,390 NZD
NZ Jewellers$4,516 NZD

44 data points across 13 retailers

22 retailers$1,355 NZD to $3,390 NZD

A
Cheapest Retailer
-
$1,355 NZD
SGD 1,030 SGD
B+
Retailer 2
-
$1,548 NZD
$871 USD
View
Final sale: no returns
B+
Retailer 3
-
$1,658 NZD
$933 USD
View
B+
Retailer 4
-
$1,660 NZD
$934 USD
View
B+
Retailer 5
-
$1,669 NZD
A$1,445 AUD
View
B+
Retailer 6
-
$1,678 NZD
$944 USD
View
B+
Retailer 7
-
$1,678 NZD
$944 USD
View
B+
Retailer 8
-
$1,694 NZD
$953 USD
View
B+
Retailer 9
-
$1,742 NZD
$980 USD
View
B+
Retailer 10
-
$1,935 NZD
$1,089 USD
View
B
Retailer 11
-
$1,946 NZD
$1,095 USD
View
B
Retailer 12
-
$2,044 NZD
$1,150 USD
View
B
Retailer 13
-
$2,044 NZD
$1,150 USD
View
B
Retailer 14
-
$2,083 NZD
$1,172 USD
View
B
Retailer 15
-
$2,115 NZD
$1,190 USD
View
B
Retailer 16
-
$2,165 NZD
£959 GBP
View
B
Retailer 17
-
$2,400 NZD
€1,286 EUR
View
Retailer 18
-
$2,421 NZD
A$2,096 AUD
View
Price last confirmed 29 days ago
B
Retailer 19
-
$2,858 NZD
ZAR 25,977 ZAR
View
B
Retailer 20
-
$3,001 NZD
CA$2,345 CAD
View
B
Retailer 21
-
$3,390 NZD
£1,502 GBP
View
Most Expensive
NZ Jewellers
d6e4a16b-be2e-46e6-b827-23a2faa1cf14 · Oct 30
$4,516 NZD
$2,541 USD
View
Price under review
21 more retailers have this diamond
Prices start from $1,355 NZDSave up to $2,036 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
$1,355 NZD