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Radiant|Natural|GIA

1.21ct F SI2 Radiant Natural Diamond

EX • F/SI2 • GIA 1528227650

Certificate GIA 1528227650

Diamond specifications and retailer prices

From $3,656 CAD
As of November 6, 2026
Save $4,449 CAD (55%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,105 CAD at MOH London · As of November 7, 2026
View at MOH London

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1528227650. Listed at 12 retailers as of November 6, 2026, with prices from $3,656 to $8,105, a $4,449 spread on the same certified stone. MOH London lists it at $8,105. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.2°
Pavilion angle31.98°
OriginNatural
Grading LabGIA
CertificateGIA 1528227650
Dimensions7.28 × 5.44 × 3.46 mm
L/W Ratio1.34
Girdle conditionThick
Key to symbols
Crystal, Feather, Needle
Top View
7.28 mm5.44 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1528227650
Side View
Table 71.0%Crown 44.2°Girdle: STK-THKPavilion 31.98°Culet: NoneDepth 63.6%

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: $8,105 CAD|Low: $3,656 CAD|High: $9,801 CAD|Avg: $5,371 CAD|+16.9%
MOH London
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
November 7, 2026
Retailer 4$3,656 CAD
Retailer 15$3,844 CAD
Retailer 13$3,965 CAD
Retailer 5$4,051 CAD
Retailer 14$4,262 CAD
Retailer 7$4,633 CAD
Retailer 9$4,791 CAD
Retailer 8$5,113 CAD
Retailer 2$5,185 CAD
Retailer 10$5,196 CAD
Retailer 12$5,760 CAD
Retailer 11$5,811 CAD
Retailer 3$8,037 CAD
MOH London$8,105 CAD
Retailer 6$9,801 CAD

30 data points across 15 retailers

12 retailers$3,656 CAD to $8,105 CAD

A
Cheapest Retailer
-
$3,656 CAD
A
Retailer 2
-
$3,844 CAD
View
A
Retailer 3
-
$3,965 CAD
View
Final sale: no returns
Retailer 4
-
$4,051 CAD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$4,262 CAD
View
B+
Retailer 6
-
$4,791 CAD
View
B+
Retailer 7
-
$5,113 CAD
View
B
Retailer 8
-
$5,185 CAD
View
B
Retailer 9
-
$5,196 CAD
View
B
Retailer 10
-
$5,760 CAD
View
B
Retailer 11
-
$5,811 CAD
View
Most Expensive
B
MOH London
F612B9A96 · Nov 7
$8,105 CAD
£4,537 GBP
View
11 more retailers have this diamond
Prices start from $3,656 CADSave up to $4,449 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 Radiant
$3,656 CAD