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Round|Natural|GIA

1.21ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 5136012626

Certificate GIA 5136012626

Diamond specifications and retailer prices

From $10,620 CAD
As of November 4, 2026
Save $4,369 CAD (29%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $21,215 CAD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5136012626. Listed at 18 retailers as of November 4, 2026, with a 41% 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

1.21
Carat
F
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5136012626
Dimensions6.92 × 6.91 × 4.20 mm
L/W Ratio1.00
Top View
6.92 mm6.91 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5136012626
Side View
Table 57.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 60.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $14,811 CAD|Low: $9,656 CAD|High: $23,175 CAD|Avg: $14,138 CAD|+5.7%
Retailer 1
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
Retailer 17
November 5, 2026
Retailer 11$10,620 CAD
Retailer 3$10,881 CAD
Retailer 17$11,227 CAD
Retailer 9$11,588 CAD
Retailer 2$11,700 CAD
Retailer 13$11,991 CAD
Retailer 8$12,929 CAD
Retailer 6$12,990 CAD
Retailer 4$13,190 CAD
Retailer 5$14,179 CAD
Retailer 7$14,179 CAD
Retailer 16$14,271 CAD
Retailer 12$14,643 CAD
Retailer 1$14,811 CAD
Retailer 15$14,989 CAD
Retailer 10$18,675 CAD
Retailer 14$19,985 CAD

37 data points across 17 retailers

18 retailers$10,620 CAD to $14,989 CAD

B
Cheapest Retailer
-
$10,620 CAD
B
Retailer 2
-
$10,881 CAD
View
B
Retailer 3
-
$11,227 CAD
View
B
Retailer 4
-
$11,588 CAD
View
Final sale: no returns
B
Retailer 5
-
$11,700 CAD
View
Retailer 6
-
$11,991 CAD
View
Price last confirmed 8 days ago
Retailer 7
-
$12,929 CAD
View
Price last confirmed 15 days ago
B
Retailer 8
-
$12,990 CAD
View
B
Retailer 9
-
$13,190 CAD
View
B
Retailer 10
-
$14,179 CAD
View
B
Retailer 11
-
$14,179 CAD
View
B
Retailer 12
-
$14,271 CAD
View
B
Retailer 13
-
$14,643 CAD
View
B
Retailer 14
-
$14,811 CAD
View
B
Retailer 15
-
$14,989 CAD
View
Retailer 16
-
$18,675 CAD
View
Price under review
Retailer 17
-
$19,985 CAD
View
Price under review
Most Expensive
Diamond Quarter
1.21SI2F5126EA3DN · Nov 5
$21,215 CAD
£11,876 GBP
View
Price under review
17 more retailers have this diamond
Prices start from $10,620 CADSave up to $4,369 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
$10,620 CAD