Round|Natural|GIA

1.20ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6545442420

Certificate GIA 6545442420

Diamond specifications and retailer prices

From $2,842 CAD
As of November 6, 2026
Save $3,677 CAD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $7,801 CAD at NZ Jewellers · As of September 28, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6545442420. Listed at 18 retailers as of November 4, 2026, with a 129% 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
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6545442420
Dimensions6.79 × 6.84 × 4.23 mm
L/W Ratio1.01
Top View
6.79 mm6.84 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545442420
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.1%

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: $2,938 CAD|Low: $2,842 CAD|High: $6,616 CAD|Avg: $4,232 CAD|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8$2,842 CAD
Retailer 1$2,938 CAD
Retailer 5$3,307 CAD
Retailer 3$3,926 CAD
Retailer 2$3,943 CAD
Retailer 4$4,554 CAD
Retailer 6$4,628 CAD
Retailer 7$6,519 CAD

34 data points across 8 retailers

18 retailers$2,842 CAD to $6,519 CAD

A
Cheapest Retailer
-
$2,842 CAD
A
Retailer 2
-
$2,938 CAD
View
B+
Retailer 3
-
$3,307 CAD
View
B+
Retailer 4
-
$3,469 CAD
View
B+
Retailer 5
-
$3,511 CAD
View
B+
Retailer 6
-
$3,512 CAD
View
Retailer 7
-
$3,732 CAD
View
Price last confirmed 39 days ago
Retailer 8
-
$3,732 CAD
View
Price last confirmed 25 days ago
B
Retailer 9
-
$3,813 CAD
View
Retailer 10
-
$3,876 CAD
View
Price last confirmed 38 days ago
B+
Retailer 11
-
$3,926 CAD
View
B
Retailer 12
-
$3,927 CAD
View
B
Retailer 13
-
$3,943 CAD
View
Retailer 14
-
$4,306 CAD
View
Price last confirmed 38 days ago
B
Retailer 15
-
$4,554 CAD
View
B
Retailer 16
-
$4,628 CAD
View
B
Retailer 17
-
$6,519 CAD
View
Most Expensive
NZ Jewellers
fb4b624f-56ed-4d45-9c91-33d05b7f11c1 · Sep 28
$7,801 CAD
$5,586 USD
View
Price last confirmed 39 days ago
17 more retailers have this diamond
Prices start from $2,842 CADSave up to $3,677 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
$2,842 CAD