Marquise|Natural|GIA

0.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 1549578318

Certificate GIA 1549578318

Diamond specifications and retailer prices

From $1,345 CAD
$963 USD
As of October 30, 2026
Save $1,451 CAD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,703 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 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 1549578318. Listed at 21 retailers as of October 29, 2026, with a 108% 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1549578318
Dimensions7.66 × 4.21 × 2.61 mm
L/W Ratio1.82
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
7.66 mm4.21 mm0.50 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1549578318
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.9%

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: Oct 30
Current: $3,703 CAD|Low: $1,348 CAD|High: $3,703 CAD|Avg: $1,951 CAD
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 15$1,361 CAD
Retailer 3$1,376 CAD
Retailer 7$1,376 CAD
Retailer 14$1,429 CAD
Retailer 10$1,546 CAD
Retailer 12$1,585 CAD
Retailer 6$1,587 CAD
Retailer 5$1,711 CAD
Retailer 2$1,730 CAD
Retailer 8$1,971 CAD
Retailer 13$1,986 CAD
Retailer 9$2,344 CAD
Retailer 4$2,464 CAD
Retailer 11$2,796 CAD
NZ Jewellers$3,703 CAD

43 data points across 15 retailers

21 retailers$1,345 CAD to $2,796 CAD

B+
Cheapest Retailer
-
$1,345 CAD
$963 USD
B+
Retailer 2
-
$1,347 CAD
$964 USD
View
B+
Retailer 3
-
$1,361 CAD
$974 USD
View
B+
Retailer 4
-
$1,363 CAD
A$1,501 AUD
View
B+
Retailer 5
-
$1,376 CAD
$985 USD
View
B+
Retailer 6
-
$1,376 CAD
$985 USD
View
B+
Retailer 7
-
$1,429 CAD
$1,023 USD
View
B+
Retailer 8
-
$1,546 CAD
$1,107 USD
View
B
Retailer 9
-
$1,585 CAD
$1,135 USD
View
B+
Retailer 10
-
$1,587 CAD
$1,136 USD
View
B
Retailer 11
-
$1,676 CAD
$1,200 USD
View
B
Retailer 12
-
$1,676 CAD
$1,200 USD
View
B
Retailer 13
-
$1,711 CAD
$1,225 USD
View
B
Retailer 14
-
$1,730 CAD
£975 GBP
View
B
Retailer 15
-
$1,732 CAD
$1,240 USD
View
B
Retailer 16
-
$1,971 CAD
€1,344 EUR
View
Retailer 17
-
$1,986 CAD
A$2,187 AUD
View
Price last confirmed 27 days ago
B
Retailer 18
-
$2,344 CAD
ZAR 27,109 ZAR
View
B
Retailer 19
-
$2,464 CAD
View
B
Retailer 20
-
$2,796 CAD
£1,576 GBP
View
Most Expensive
NZ Jewellers
fd89eb10-e512-4bea-bb36-f1c932654ce7 · Oct 30
$3,703 CAD
$2,651 USD
View
Price under review
20 more retailers have this diamond
Prices start from $1,345 CADSave up to $1,451 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.

B+
0.50ct Marquise
$1,345 CAD