Marquise|Natural|GIA

1.20ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 3545449954

Certificate GIA 3545449954

Diamond specifications and retailer prices

From $4,666 CAD
As of November 6, 2026
Save $5,022 CAD (52%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $10,625 CAD at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded J 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 3545449954. Listed at 26 retailers as of November 4, 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

1.20
Carat
J
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.39°
Pavilion angle39.22°
OriginNatural
Grading LabGIA
CertificateGIA 3545449954
Dimensions10.52 × 5.58 × 3.39 mm
L/W Ratio1.89
Top View
10.52 mm5.58 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 3545449954
Side View
Table 64.0%Crown 38.39°Girdle: THN-VTKPavilion 39.22°Culet: NoneDepth 60.8%

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: Nov 6
Current: $6,078 CAD|Low: $4,666 CAD|High: $9,829 CAD|Avg: $6,208 CAD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2$4,666 CAD
Retailer 8$4,863 CAD
Retailer 9$5,055 CAD
Retailer 7$5,099 CAD
Retailer 6$5,525 CAD
Retailer 1$6,078 CAD
Retailer 3$6,178 CAD
Retailer 5$6,899 CAD
Retailer 4$9,687 CAD

39 data points across 9 retailers

26 retailers$4,666 CAD to $9,687 CAD

B+
Cheapest Retailer
-
$4,666 CAD
B
Retailer 2
-
$4,863 CAD
View
B
Retailer 3
-
$5,055 CAD
View
B
Retailer 4
-
$5,099 CAD
View
Final sale: no returns
B
Retailer 5
-
$5,514 CAD
View
Retailer 6
-
$5,525 CAD
View
Price last confirmed 29 days ago
B
Retailer 7
-
$5,525 CAD
View
Retailer 8
-
$5,525 CAD
View
Price last confirmed 36 days ago
Retailer 9
-
$5,525 CAD
View
Price last confirmed 15 days ago
Retailer 10
-
$5,525 CAD
View
Price last confirmed 8 days ago
Retailer 11
-
$5,525 CAD
View
Price last confirmed 46 days ago
B
Retailer 12
-
$5,525 CAD
View
B
Retailer 13
-
$5,992 CAD
View
B
Retailer 14
-
$5,992 CAD
View
B
Retailer 15
-
$6,078 CAD
View
B
Retailer 16
-
$6,178 CAD
View
B
Retailer 17
-
$6,189 CAD
View
Retailer 18
-
$6,376 CAD
View
Price last confirmed 46 days ago
Retailer 19
-
$6,376 CAD
View
Price last confirmed 28 days ago
Retailer 20
-
$6,376 CAD
View
Price last confirmed 16 days ago
Retailer 21
-
$6,899 CAD
View
Price last confirmed 22 days ago
B
Retailer 22
-
$6,899 CAD
View
B
Retailer 23
-
$9,687 CAD
View
Retailer 24
-
$10,625 CAD
View
Price last confirmed 47 days ago
Retailer 25
-
$10,625 CAD
View
Price last confirmed 16 days ago
Most Expensive
NZ Jewellers
f4851853-d466-4855-8954-055568be135e · Sep 29
$10,625 CAD
$7,554 USD
View
Price last confirmed 38 days ago
25 more retailers have this diamond
Prices start from $4,666 CADSave up to $5,022 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+
1.20ct Marquise
$4,666 CAD