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Round|Natural|GIA

1.20ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 3555551384

Certificate GIA 3555551384

Diamond specifications and retailer prices

From $3,486 CAD
As of November 6, 2026
Save $4,825 CAD (58%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $8,311 CAD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3555551384. Listed at 9 retailers as of November 5, 2026, with prices from $3,486 to $8,311, a $4,825 spread on the same certified stone. NZ Jewellers lists it at $8,311. 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
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 3555551384
Dimensions6.68 × 6.73 × 4.26 mm
L/W Ratio1.01
Key to symbols
Crystal, Cloud, Feather, Needle, Indented Natural, Natural
Top View
6.68 mm6.73 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 3555551384
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilion 41.6°Culet: NoneDepth 63.5%

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 6
Current: $8,311 CAD|Low: $3,486 CAD|High: $8,846 CAD|Avg: $5,628 CAD|-6.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2$3,486 CAD
Retailer 5$4,138 CAD
Retailer 9$4,255 CAD
Retailer 8$4,771 CAD
Retailer 3$4,836 CAD
Retailer 7$4,954 CAD
Retailer 6$5,561 CAD
Retailer 4$7,956 CAD
NZ Jewellers$8,311 CAD

41 data points across 9 retailers

9 retailers$3,486 CAD to $8,311 CAD

A
Cheapest Retailer
-
$3,486 CAD
A
Retailer 2
-
$4,138 CAD
View
A
Retailer 3
-
$4,255 CAD
View
A
Retailer 4
-
$4,771 CAD
View
A
Retailer 5
-
$4,836 CAD
View
A
Retailer 6
-
$4,954 CAD
View
B+
Retailer 7
-
$5,561 CAD
View
B+
Retailer 8
-
$7,956 CAD
View
Most Expensive
B
NZ Jewellers
b7335a54-dc7a-46d8-b154-9af7e0d6ced2 · Nov 5
$8,311 CAD
$5,951 USD
View
8 more retailers have this diamond
Prices start from $3,486 CADSave up to $4,825 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
1.20ct Round
$3,486 CAD