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Round|Natural|GIA

1.21ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2416493551

Certificate GIA 2416493551

Diamond specifications and retailer prices

From $4,199 AUD
As of November 4, 2026
Save $5,158 AUD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,357 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2416493551. Listed at 19 retailers as of November 4, 2026, with prices from $4,199 to $9,357, a $5,158 spread on the same certified stone. NZ Jewellers lists it at $9,357. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2416493551
Dimensions6.80 × 6.76 × 4.24 mm
L/W Ratio1.01
Top View
6.80 mm6.76 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2416493551
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.7%

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: $9,357 AUD|Low: $4,030 AUD|High: $9,441 AUD|Avg: $5,643 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
Retailer 18
November 5, 2026
Retailer 14$4,199 AUD
Retailer 18$4,232 AUD
Retailer 5$4,318 AUD
Retailer 6$4,490 AUD
Retailer 15$4,570 AUD
Retailer 9$4,865 AUD
Retailer 10$4,865 AUD
Retailer 3$4,883 AUD
Retailer 17$5,052 AUD
Retailer 7$5,443 AUD
Retailer 16$5,443 AUD
Retailer 12$5,523 AUD
Retailer 2$5,560 AUD
Retailer 8$5,632 AUD
Retailer 11$5,873 AUD
Retailer 4$6,082 AUD
Retailer 13$8,957 AUD
NZ Jewellers$9,357 AUD

39 data points across 18 retailers

19 retailers$4,199 AUD to $9,357 AUD

A
Cheapest Retailer
-
$4,199 AUD
A
Retailer 2
-
$4,232 AUD
View
B+
Retailer 3
-
$4,318 AUD
View
B+
Retailer 4
-
$4,475 AUD
View
B+
Retailer 5
-
$4,490 AUD
View
Final sale: no returns
Retailer 6
-
$4,570 AUD
View
Price last confirmed 17 days ago
Retailer 7
-
$4,865 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$4,865 AUD
View
B+
Retailer 9
-
$4,883 AUD
View
B+
Retailer 10
-
$5,052 AUD
View
B
Retailer 11
-
$5,443 AUD
View
B
Retailer 12
-
$5,443 AUD
View
B
Retailer 13
-
$5,474 AUD
View
B+
Retailer 14
-
$5,523 AUD
View
B
Retailer 15
-
$5,560 AUD
View
B
Retailer 16
-
$5,632 AUD
View
B+
Retailer 17
-
$5,873 AUD
View
B
Retailer 18
-
$8,957 AUD
View
Most Expensive
B
NZ Jewellers
016afa2a-a770-4c4a-8e1c-d63ca2ad3294 · Nov 5
$9,357 AUD
$6,429 USD
View
18 more retailers have this diamond
Prices start from $4,199 AUDSave up to $5,158 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
$4,199 AUD