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Marquise|Natural|GIA

0.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 2546733758

Certificate GIA 2546733758

Diamond specifications and retailer prices

From $1,160 NZD
HK$5,100 HKD
As of November 1, 2026
Save $1,713 NZD (60%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,920 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 2546733758. Listed at 20 retailers as of November 1, 2026, with a 148% 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 2546733758
Dimensions9.19 × 4.04 × 2.34 mm
L/W Ratio2.27
Top View
9.19 mm4.04 mm0.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2546733758
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.0%

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: Nov 1
Current: $1,926 NZD|Low: $1,160 NZD|High: $2,907 NZD|Avg: $1,924 NZD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 4$1,160 NZD
Retailer 12$1,401 NZD
Retailer 9$1,448 NZD
Retailer 10$1,589 NZD
Retailer 3$1,630 NZD
Retailer 6$1,818 NZD
Retailer 11$1,848 NZD
Retailer 1$1,926 NZD
Retailer 5$2,211 NZD
Retailer 2$2,359 NZD
Retailer 8$2,422 NZD
Retailer 7$2,873 NZD

38 data points across 12 retailers

20 retailers$1,160 NZD to $2,873 NZD

A
Cheapest Retailer
-
$1,160 NZD
HK$5,100 HKD
A
Retailer 2
-
$1,401 NZD
$788 USD
View
B+
Retailer 3
-
$1,448 NZD
$815 USD
View
Final sale: no returns
B+
Retailer 4
-
$1,569 NZD
$883 USD
View
B+
Retailer 5
-
$1,569 NZD
$883 USD
View
B+
Retailer 6
-
$1,589 NZD
$894 USD
View
B+
Retailer 7
-
$1,627 NZD
SGD 1,237 SGD
View
B+
Retailer 8
-
$1,630 NZD
$917 USD
View
B+
Retailer 9
-
$1,805 NZD
$1,016 USD
View
B+
Retailer 10
-
$1,811 NZD
$1,019 USD
View
B+
Retailer 11
-
$1,818 NZD
£806 GBP
View
B+
Retailer 12
-
$1,848 NZD
$1,040 USD
View
B+
Retailer 13
-
$1,926 NZD
£853 GBP
View
B+
Retailer 14
-
$2,042 NZD
A$1,768 AUD
View
B+
Retailer 15
-
$2,079 NZD
$1,170 USD
View
B+
Retailer 16
-
$2,211 NZD
€1,185 EUR
View
Retailer 17
-
$2,359 NZD
A$2,042 AUD
View
Price last confirmed 28 days ago
B
Retailer 18
-
$2,422 NZD
ZAR 22,013 ZAR
View
B
Retailer 19
-
$2,873 NZD
£1,273 GBP
View
Most Expensive
NZ Jewellers
e75d2e8f-8754-4b98-8c74-b82cbab82265 · Oct 30
$4,920 NZD
$2,768 USD
View
Price under review
19 more retailers have this diamond
Prices start from $1,160 NZDSave up to $1,713 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
$1,160 NZD