CaratHunter
Plans
Round|Natural|GIA

1.21ct J SI2 Round Natural Diamond

GD • J/SI2 • GIA 17427766

Certificate GIA 17427766

Diamond specifications and retailer prices

From $3,353 CAD
$2,400 USD
As of October 30, 2026
Save $3,243 CAD (49%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,828 CAD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by GIA 17427766. Listed at 11 retailers as of October 29, 2026, with a 97% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.21
Carat
J
Color
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceStrong
Crown angle33°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 17427766
Dimensions6.91 × 6.94 × 4.04 mm
L/W Ratio1.00
Star length50%
Lower girdle85%
Key to symbols
Feather, Crystal, Knot
Top View
6.91 mm6.94 mm1.21 ctJ / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceStrong
CertificateGIA 17427766
Side View
Table 63.0%Crown 33°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 58.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $3,614 CAD|Low: $2,880 CAD|High: $6,639 CAD|Avg: $4,163 CAD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 5$2,880 CAD
Retailer 1$3,614 CAD
Retailer 6$3,621 CAD
Retailer 2$3,978 CAD
Retailer 3$4,403 CAD
Retailer 4$6,596 CAD

40 data points across 6 retailers

11 retailers$3,353 CAD to $6,596 CAD

B+
Cheapest Retailer
-
$3,353 CAD
$2,400 USD
B
Retailer 2
-
$3,614 CAD
£2,037 GBP
View
B
Retailer 3
-
$3,621 CAD
A$3,988 AUD
View
Retailer 4
-
$3,745 CAD
$2,681 USD
View
Price last confirmed 31 days ago
Retailer 5
-
$3,889 CAD
$2,784 USD
View
Price last confirmed 31 days ago
B
Retailer 6
-
$3,978 CAD
£2,243 GBP
View
Retailer 7
-
$4,321 CAD
$3,093 USD
View
Price last confirmed 31 days ago
B
Retailer 8
-
$4,403 CAD
€3,002 EUR
View
C
Retailer 9
-
$5,100 CAD
€3,477 EUR
View
C
Retailer 10
-
$6,596 CAD
£3,718 GBP
View
Most Expensive
NZ Jewellers
0d78096f-79e7-4b7b-a025-93a553bf2cb8 · Sep 28
$7,828 CAD
$5,604 USD
View
Price last confirmed 32 days ago
10 more retailers have this diamond
Prices start from $3,353 CADSave up to $3,243 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.

B+
1.21ct Round
$3,353 CAD