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Round|Natural|GIA

1.20ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1563043428

Certificate GIA 1563043428

Diamond specifications and retailer prices

From $2,863 CAD
SGD 2,770 SGD
As of October 24, 2026
Save $2,712 CAD (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,575 CAD at Helzberg Diamonds · As of October 25, 2026
View at Helzberg Diamonds

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1563043428. Listed at 14 retailers as of October 24, 2026, with prices from $2,863 to $5,575, a $2,712 spread on the same certified stone. Helzberg Diamonds lists it at $5,575. 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
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1563043428
Dimensions6.77 × 6.79 × 4.23 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.77 mm6.79 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1563043428
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

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: Oct 24
Current: $5,575 CAD|Low: $2,863 CAD|High: $5,861 CAD|Avg: $3,897 CAD|-3.8%
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
October 26, 2026
Retailer 13$2,863 CAD
Retailer 11$3,026 CAD
Retailer 9$3,083 CAD
Retailer 12$3,109 CAD
Retailer 8$3,115 CAD
Retailer 7$3,267 CAD
Retailer 5$3,384 CAD
Retailer 14$3,675 CAD
Retailer 4$3,871 CAD
Retailer 10$3,894 CAD
Retailer 2$3,994 CAD
Retailer 6$4,740 CAD
Retailer 3$5,104 CAD
Helzberg Diamonds$5,575 CAD

28 data points across 14 retailers

14 retailers$2,863 CAD to $5,575 CAD

A
Cheapest Retailer
-
$2,863 CAD
SGD 2,770 SGD
A
Retailer 2
-
$3,026 CAD
$2,166 USD
View
A
Retailer 3
-
$3,083 CAD
$2,207 USD
View
A
Retailer 4
-
$3,109 CAD
$2,226 USD
View
A
Retailer 5
-
$3,115 CAD
$2,230 USD
View
A
Retailer 6
-
$3,267 CAD
£1,841 GBP
View
A
Retailer 7
-
$3,384 CAD
SGD 3,274 SGD
View
A
Retailer 8
-
$3,675 CAD
$2,631 USD
View
A
Retailer 9
-
$3,871 CAD
$2,771 USD
View
A
Retailer 10
-
$3,894 CAD
£2,195 GBP
View
A
Retailer 11
-
$3,994 CAD
€2,723 EUR
View
B+
Retailer 12
-
$4,740 CAD
$3,393 USD
View
Retailer 13
-
$5,104 CAD
$3,654 USD
View
Price last confirmed 7 days ago
Most Expensive
B+
Helzberg Diamonds
XZRHLMJGKJKIO · Oct 25
$5,575 CAD
$3,991 USD
View
13 more retailers have this diamond
Prices start from $2,863 CADSave up to $2,712 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
$2,863 CAD