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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 $733 CAD
HK$4,100 HKD
As of October 30, 2026
Save $1,305 CAD (64%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,753 CAD 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 October 29, 2026, with a 178% 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
Color
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: Oct 30
Current: $2,753 CAD|Low: $715 CAD|High: $2,753 CAD|Avg: $1,171 CAD|+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
October 31, 2026
Retailer 4$733 CAD
Retailer 3$810 CAD
Retailer 12$877 CAD
Retailer 15$887 CAD
Retailer 7$915 CAD
Retailer 13$946 CAD
Retailer 14$946 CAD
Retailer 11$1,013 CAD
Retailer 9$1,052 CAD
Retailer 5$1,055 CAD
Retailer 6$1,062 CAD
Retailer 2$1,080 CAD
Retailer 8$1,292 CAD
Retailer 10$2,038 CAD
NZ Jewellers$2,753 CAD

31 data points across 15 retailers

16 retailers$733 CAD to $2,038 CAD

A
Cheapest Retailer
-
$733 CAD
HK$4,100 HKD
A
Retailer 2
-
$810 CAD
$580 USD
View
Final sale: no returns
A
Retailer 3
-
$877 CAD
$628 USD
View
B+
Retailer 4
-
$887 CAD
$635 USD
View
B+
Retailer 5
-
$915 CAD
SGD 885 SGD
View
B+
Retailer 6
-
$946 CAD
$677 USD
View
B+
Retailer 7
-
$946 CAD
$677 USD
View
B+
Retailer 8
-
$1,013 CAD
$725 USD
View
B+
Retailer 9
-
$1,052 CAD
£593 GBP
View
B+
Retailer 10
-
$1,055 CAD
$755 USD
View
B+
Retailer 11
-
$1,062 CAD
$760 USD
View
B+
Retailer 12
-
$1,080 CAD
£609 GBP
View
Retailer 13
-
$1,130 CAD
$809 USD
View
Price last confirmed 14 days ago
B
Retailer 14
-
$1,292 CAD
€881 EUR
View
B
Retailer 15
-
$2,038 CAD
£1,149 GBP
View
Most Expensive
NZ Jewellers
0baf91a4-6fc7-42cc-8403-433606648c27 · Oct 30
$2,753 CAD
$1,971 USD
View
Price under review
15 more retailers have this diamond
Prices start from $733 CADSave up to $1,305 CAD

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
$733 CAD