CaratHunter
Plans
Round|Natural|GIA

1.21ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 5503489142

Certificate GIA 5503489142

Diamond specifications and retailer prices

From $4,692 AUD
As of November 1, 2026
Save $6,611 AUD (58%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $11,303 AUD 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 5503489142. Listed at 16 retailers as of November 1, 2026, with prices from $4,692 to $11,303, a $6,611 spread on the same certified stone. Diamond Quarter lists it at $11,303. 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
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5503489142
Dimensions6.81 × 6.78 × 4.22 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
6.81 mm6.78 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5503489142
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°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 1
Current: $5,929 AUD|Low: $4,065 AUD|High: $10,163 AUD|Avg: $6,623 AUD|+2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 6$4,759 AUD
Retailer 7$4,879 AUD
Retailer 5$4,895 AUD
Retailer 1$5,929 AUD
Retailer 2$6,171 AUD
Retailer 3$6,408 AUD
Retailer 9$6,602 AUD
Retailer 10$6,941 AUD
Retailer 4$9,756 AUD
Retailer 8$10,163 AUD

33 data points across 10 retailers

16 retailers$4,692 AUD to $11,303 AUD

A
Cheapest Retailer
-
$4,692 AUD
A
Retailer 2
-
$4,759 AUD
View
B+
Retailer 3
-
$4,895 AUD
View
Retailer 4
-
$5,285 AUD
View
Price last confirmed 22 days ago
Retailer 5
-
$5,285 AUD
View
Price last confirmed 18 days ago
Retailer 6
-
$5,488 AUD
View
Price last confirmed 23 days ago
B+
Retailer 7
-
$5,929 AUD
View
B+
Retailer 8
-
$5,982 AUD
View
B+
Retailer 9
-
$5,982 AUD
View
Retailer 10
-
$6,098 AUD
View
Price last confirmed 20 days ago
B+
Retailer 11
-
$6,171 AUD
View
B+
Retailer 12
-
$6,408 AUD
View
Retailer 13
-
$6,602 AUD
View
Price last confirmed 23 days ago
B
Retailer 14
-
$9,756 AUD
View
Retailer 15
-
$10,163 AUD
View
Price last confirmed 18 days ago
Most Expensive
B
Diamond Quarter
1.21SI2F55428241N · Nov 5
$11,303 AUD
£6,115 GBP
View
15 more retailers have this diamond
Prices start from $4,692 AUDSave up to $6,611 AUD

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 Round
$4,692 AUD