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Radiant|Natural|GIA

1.20ct D SI1 Radiant Natural Diamond

VG • D/SI1 • GIA 1555638026

Certificate GIA 1555638026

Diamond specifications and retailer prices

From $4,493 CAD
As of November 4, 2026
Save $4,054 CAD (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,547 CAD at Helzberg Diamonds · As of November 4, 2026
View at Helzberg Diamonds

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1555638026. Listed at 13 retailers as of November 4, 2026, with prices from $4,493 to $8,547, a $4,054 spread on the same certified stone. Helzberg Diamonds lists it at $8,547. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
D
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555638026
Dimensions6.94 × 5.34 × 3.65 mm
L/W Ratio1.30
Culet sizeNone
Top View
6.94 mm5.34 mm1.20 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555638026
Side View
Table 68.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.3%

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 4
Current: $8,547 CAD|Low: $4,493 CAD|High: $8,547 CAD|Avg: $5,783 CAD|+4.0%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 7, 2026
Retailer 9$4,493 CAD
Retailer 11$4,569 CAD
Retailer 6$4,602 CAD
Retailer 10$4,802 CAD
Retailer 2$5,189 CAD
Retailer 4$5,413 CAD
Retailer 13$5,733 CAD
Retailer 3$5,818 CAD
Retailer 8$5,991 CAD
Retailer 7$6,234 CAD
Retailer 12$7,579 CAD
Retailer 5$8,132 CAD
Helzberg Diamonds$8,547 CAD

38 data points across 13 retailers

13 retailers$4,493 CAD to $8,547 CAD

A
Cheapest Retailer
-
$4,493 CAD
A
Retailer 2
-
$4,569 CAD
View
A
Retailer 3
-
$4,602 CAD
View
B+
Retailer 4
-
$4,802 CAD
View
B+
Retailer 5
-
$5,189 CAD
View
B+
Retailer 6
-
$5,413 CAD
View
B+
Retailer 7
-
$5,733 CAD
View
B+
Retailer 8
-
$5,818 CAD
View
B+
Retailer 9
-
$5,991 CAD
View
B+
Retailer 10
-
$6,234 CAD
View
B
Retailer 11
-
$7,579 CAD
View
B
Retailer 12
-
$8,132 CAD
View
Most Expensive
B
Helzberg Diamonds
XZRHLLLMJOGIM · Nov 4
$8,547 CAD
$6,076 USD
View
12 more retailers have this diamond
Prices start from $4,493 CADSave up to $4,054 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 Radiant
$4,493 CAD