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Marquise|Natural|GIA

0.50ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 1558995545

Certificate GIA 1558995545

Diamond specifications and retailer prices

From $933 NZD
HK$4,100 HKD
As of November 1, 2026
Save $1,647 NZD (64%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,503 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558995545. Listed at 16 retailers as of November 1, 2026, with a 177% 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558995545
Dimensions7.71 × 4.16 × 2.59 mm
L/W Ratio1.85
Key to symbols
Cloud, Crystal, Feather
Top View
7.71 mm4.16 mm0.50 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558995545
Side View
Table 54.0%CrownGirdle: THK-ETKPavilionCulet: 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: Nov 1
Current: $3,503 NZD|Low: $910 NZD|High: $3,503 NZD|Avg: $1,476 NZD|+3.2%
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
November 2, 2026
Retailer 4$933 NZD
Retailer 3$1,031 NZD
Retailer 12$1,116 NZD
Retailer 15$1,129 NZD
Retailer 7$1,164 NZD
Retailer 13$1,203 NZD
Retailer 14$1,203 NZD
Retailer 11$1,289 NZD
Retailer 2$1,334 NZD
Retailer 5$1,342 NZD
Retailer 6$1,351 NZD
Retailer 8$1,374 NZD
Retailer 10$1,644 NZD
Retailer 9$2,580 NZD
NZ Jewellers$3,503 NZD

31 data points across 15 retailers

16 retailers$933 NZD to $2,580 NZD

A
Cheapest Retailer
-
$933 NZD
HK$4,100 HKD
A
Retailer 2
-
$1,031 NZD
$580 USD
View
Final sale: no returns
A
Retailer 3
-
$1,116 NZD
$628 USD
View
B+
Retailer 4
-
$1,129 NZD
$635 USD
View
B+
Retailer 5
-
$1,164 NZD
SGD 885 SGD
View
B+
Retailer 6
-
$1,203 NZD
$677 USD
View
B+
Retailer 7
-
$1,203 NZD
$677 USD
View
B+
Retailer 8
-
$1,289 NZD
$725 USD
View
B+
Retailer 9
-
$1,334 NZD
£591 GBP
View
B+
Retailer 10
-
$1,342 NZD
$755 USD
View
B+
Retailer 11
-
$1,351 NZD
$760 USD
View
B+
Retailer 12
-
$1,374 NZD
£609 GBP
View
Retailer 13
-
$1,438 NZD
$809 USD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$1,644 NZD
€881 EUR
View
B
Retailer 15
-
$2,580 NZD
£1,143 GBP
View
Most Expensive
NZ Jewellers
0baf91a4-6fc7-42cc-8403-433606648c27 · Oct 30
$3,503 NZD
$1,971 USD
View
Price under review
15 more retailers have this diamond
Prices start from $933 NZDSave up to $1,647 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
$933 NZD