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Round|Natural|GIA

1.21ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6452098443

Certificate GIA 6452098443

Diamond specifications and retailer prices

From $6,688 AUD
As of November 4, 2026
Save $6,184 AUD (48%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $14,653 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 6452098443. Listed at 18 retailers as of November 4, 2026, with a 92% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6452098443
Dimensions6.81 × 6.76 × 4.26 mm
L/W Ratio1.01
Top View
6.81 mm6.76 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6452098443
Side View
Table 57.0%Crown 35.5°Girdle: ThickPavilion 41.2°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $14,653 AUD|Low: $6,105 AUD|High: $14,653 AUD|Avg: $9,190 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 6$6,688 AUD
Retailer 7$7,326 AUD
Retailer 9$7,443 AUD
Retailer 3$7,936 AUD
Retailer 8$7,936 AUD
Retailer 4$8,405 AUD
Retailer 10$8,654 AUD
Retailer 11$9,157 AUD
Retailer 2$9,303 AUD
Retailer 5$12,872 AUD
NZ Jewellers$14,653 AUD

42 data points across 11 retailers

18 retailers$6,688 AUD to $12,872 AUD

B+
Cheapest Retailer
-
$6,688 AUD
B
Retailer 2
-
$6,728 AUD
View
B
Retailer 3
-
$6,922 AUD
View
B
Retailer 4
-
$7,326 AUD
View
Final sale: no returns
B
Retailer 5
-
$7,443 AUD
View
B
Retailer 6
-
$7,936 AUD
View
Retailer 7
-
$7,936 AUD
View
Price last confirmed 8 days ago
B
Retailer 8
-
$7,936 AUD
View
B
Retailer 9
-
$8,405 AUD
View
B
Retailer 10
-
$8,654 AUD
View
B
Retailer 11
-
$8,863 AUD
View
B
Retailer 12
-
$8,863 AUD
View
B
Retailer 13
-
$9,157 AUD
View
B
Retailer 14
-
$9,169 AUD
View
B
Retailer 15
-
$9,303 AUD
View
Retailer 16
-
$9,661 AUD
View
Price last confirmed 14 days ago
B
Retailer 17
-
$12,872 AUD
View
Most Expensive
NZ Jewellers
2dbbae6e-fc61-4a8c-82e7-79b5176a6a54 · Nov 5
$14,653 AUD
$10,068 USD
View
Price under review
17 more retailers have this diamond
Prices start from $6,688 AUDSave up to $6,184 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.

B+
1.21ct Round
$6,688 AUD