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Round|Natural|GIA

1.21ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 3565212418

Certificate GIA 3565212418

Diamond specifications and retailer prices

From $3,521 AUD
As of November 6, 2026
Save $5,011 AUD (59%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $8,532 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 3565212418. Listed at 17 retailers as of November 5, 2026, with prices from $3,521 to $8,532, a $5,011 spread on the same certified stone. NZ Jewellers lists it at $8,532. 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 angle36°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 3565212418
Dimensions6.74 × 6.80 × 4.29 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Cavity, Needle, Knot
Top View
6.74 mm6.80 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3565212418
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 63.3%

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: $8,532 AUD|Low: $3,521 AUD|High: $8,565 AUD|Avg: $5,224 AUD
NZ Jewellers
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 6, 2026
Retailer 12$3,521 AUD
Retailer 17$3,749 AUD
Retailer 10$4,196 AUD
Retailer 13$4,273 AUD
Retailer 7$4,627 AUD
Retailer 15$4,860 AUD
Retailer 6$4,896 AUD
Retailer 9$4,896 AUD
Retailer 2$4,908 AUD
Retailer 5$4,927 AUD
Retailer 11$4,934 AUD
Retailer 14$4,935 AUD
Retailer 16$5,177 AUD
Retailer 8$5,237 AUD
Retailer 3$5,453 AUD
Retailer 4$8,168 AUD
NZ Jewellers$8,532 AUD

24 data points across 17 retailers

17 retailers$3,521 AUD to $8,532 AUD

A
Cheapest Retailer
-
$3,521 AUD
A
Retailer 2
-
$3,749 AUD
View
Final sale: no returns
A
Retailer 3
-
$4,196 AUD
View
A
Retailer 4
-
$4,273 AUD
View
A
Retailer 5
-
$4,627 AUD
View
A
Retailer 6
-
$4,860 AUD
View
Retailer 7
-
$4,896 AUD
View
Price last confirmed 12 days ago
B+
Retailer 8
-
$4,896 AUD
View
B+
Retailer 9
-
$4,908 AUD
View
B+
Retailer 10
-
$4,927 AUD
View
B+
Retailer 11
-
$4,934 AUD
View
B+
Retailer 12
-
$4,935 AUD
View
B+
Retailer 13
-
$5,177 AUD
View
B+
Retailer 14
-
$5,237 AUD
View
B+
Retailer 15
-
$5,453 AUD
View
B
Retailer 16
-
$8,168 AUD
View
Most Expensive
B
NZ Jewellers
3b8c8f14-8728-4fce-99c8-31d452c594d4 · Nov 5
$8,532 AUD
$5,862 USD
View
16 more retailers have this diamond
Prices start from $3,521 AUDSave up to $5,011 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
$3,521 AUD