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Round|Natural|GIA

1.21ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 3545917764

Certificate GIA 3545917764

Diamond specifications and retailer prices

From $4,414 AUD
As of November 4, 2026
Save $4,475 AUD (50%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,890 AUD at NZ Jewellers · As of November 5, 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3545917764. Listed at 15 retailers as of November 4, 2026, with prices from $4,414 to $8,890, a $4,475 spread on the same certified stone. NZ Jewellers lists it at $8,890. 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 angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 3545917764
Dimensions6.79 × 6.84 × 4.22 mm
L/W Ratio1.01
Star length50%
Top View
6.79 mm6.84 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3545917764
Side View
Table 61.0%Crown 34°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.9%

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 4
Current: $5,299 AUD|Low: $3,916 AUD|High: $8,533 AUD|Avg: $5,040 AUD|+13.2%
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
November 6, 2026
Retailer 2$3,916 AUD
Retailer 3$3,967 AUD
Retailer 13$4,414 AUD
Retailer 4$4,555 AUD
Retailer 12$4,564 AUD
Retailer 5$4,577 AUD
Retailer 7$4,589 AUD
Retailer 15$4,771 AUD
Retailer 11$5,072 AUD
Retailer 14$5,072 AUD
Retailer 1$5,299 AUD
Retailer 6$5,485 AUD
Retailer 8$5,625 AUD
Retailer 10$7,439 AUD
Retailer 9$8,510 AUD

25 data points across 15 retailers

15 retailers$4,414 AUD to $8,890 AUD

A
Cheapest Retailer
-
$4,414 AUD
Retailer 2
-
$4,555 AUD
View
Price last confirmed 12 days ago
A
Retailer 3
-
$4,564 AUD
View
Retailer 4
-
$4,577 AUD
View
Price last confirmed 40 days ago
Retailer 5
-
$4,753 AUD
View
Price last confirmed 39 days ago
B+
Retailer 6
-
$4,771 AUD
View
B+
Retailer 7
-
$5,072 AUD
View
B+
Retailer 8
-
$5,072 AUD
View
Retailer 9
-
$5,282 AUD
View
Price last confirmed 39 days ago
B+
Retailer 10
-
$5,299 AUD
View
B+
Retailer 11
-
$5,625 AUD
View
B
Retailer 12
-
$7,439 AUD
View
Retailer 13
-
$7,974 AUD
View
Price last confirmed 40 days ago
B
Retailer 14
-
$8,510 AUD
View
Most Expensive
B
NZ Jewellers
cb97fc63-3e39-4e23-8bc3-dea6d76b86ca · Nov 5
$8,890 AUD
$6,108 USD
View
14 more retailers have this diamond
Prices start from $4,414 AUDSave up to $4,475 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
$4,414 AUD