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Round|Natural|GIA

1.21ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1563314290

Certificate GIA 1563314290

Diamond specifications and retailer prices

From $4,214 CAD
As of October 31, 2026
Save $3,802 CAD (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,015 CAD at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1563314290. Listed at 15 retailers as of October 31, 2026, with prices from $4,214 to $8,015, a $3,802 spread on the same certified stone. Helzberg Diamonds lists it at $8,015. 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

1.21
Carat
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1563314290
Dimensions6.85 × 6.89 × 4.20 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.85 mm6.89 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1563314290
Side View
Table 58.0%Crown 33°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.2%

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 31
Current: $8,015 CAD|Low: $4,214 CAD|High: $8,320 CAD|Avg: $5,696 CAD|-3.7%
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
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 12$4,214 CAD
Retailer 8$4,455 CAD
Retailer 14$4,486 CAD
Retailer 4$4,542 CAD
Retailer 11$4,595 CAD
Retailer 2$4,933 CAD
Retailer 3$5,070 CAD
Retailer 6$5,075 CAD
Retailer 13$5,392 CAD
Retailer 5$5,490 CAD
Retailer 9$5,610 CAD
Retailer 16$5,799 CAD
Retailer 10$5,846 CAD
Retailer 15$7,107 CAD
Retailer 7$7,709 CAD
Helzberg Diamonds$8,015 CAD

35 data points across 16 retailers

15 retailers$4,214 CAD to $8,015 CAD

A
Cheapest Retailer
-
$4,214 CAD
B+
Retailer 2
-
$4,486 CAD
View
B+
Retailer 3
-
$4,542 CAD
View
B+
Retailer 4
-
$4,595 CAD
View
B+
Retailer 5
-
$4,933 CAD
View
B+
Retailer 6
-
$5,070 CAD
View
B+
Retailer 7
-
$5,075 CAD
View
B+
Retailer 8
-
$5,392 CAD
View
B+
Retailer 9
-
$5,490 CAD
View
B+
Retailer 10
-
$5,610 CAD
View
B+
Retailer 11
-
$5,799 CAD
View
B+
Retailer 12
-
$5,846 CAD
View
B
Retailer 13
-
$7,107 CAD
View
Retailer 14
-
$7,709 CAD
View
Price last confirmed 16 days ago
Most Expensive
B
Helzberg Diamonds
XZRHLMJJHKIPG · Nov 1
$8,015 CAD
$5,739 USD
View
14 more retailers have this diamond
Prices start from $4,214 CADSave up to $3,802 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
1.21ct Round
$4,214 CAD