CaratHunter
Plans
Round|Natural|GIA

1.21ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 5563654767

Certificate GIA 5563654767

Diamond specifications and retailer prices

From $3,110 AUD
As of November 1, 2026
Save $3,873 AUD (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,731 AUD at NZ Jewellers · As of October 30, 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 5563654767. Listed at 18 retailers as of November 1, 2026, with a 125% 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 angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5563654767
Dimensions6.78 × 6.74 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.78 mm6.74 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5563654767
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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: $8,731 AUD|Low: $2,981 AUD|High: $8,731 AUD|Avg: $4,388 AUD|+3.5%
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
Retailer 19
November 2, 2026
Retailer 3$3,110 AUD
Retailer 12$3,165 AUD
Retailer 18$3,430 AUD
Retailer 8$3,512 AUD
Retailer 14$3,609 AUD
Retailer 17$3,854 AUD
Retailer 7$3,893 AUD
Retailer 6$3,908 AUD
Retailer 10$4,033 AUD
Retailer 16$4,176 AUD
Retailer 11$4,189 AUD
Retailer 9$4,323 AUD
Retailer 2$4,438 AUD
Retailer 4$4,499 AUD
Retailer 5$4,819 AUD
Retailer 13$4,879 AUD
Retailer 19$5,113 AUD
Retailer 15$6,983 AUD
NZ Jewellers$8,731 AUD

13 data points across 19 retailers

18 retailers$3,110 AUD to $6,983 AUD

A
Cheapest Retailer
-
$3,110 AUD
A
Retailer 2
-
$3,165 AUD
View
A
Retailer 3
-
$3,430 AUD
View
A
Retailer 4
-
$3,512 AUD
View
A
Retailer 5
-
$3,609 AUD
View
A
Retailer 6
-
$3,893 AUD
View
A
Retailer 7
-
$3,908 AUD
View
Retailer 8
-
$4,033 AUD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$4,176 AUD
View
Retailer 10
-
$4,189 AUD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$4,323 AUD
View
B+
Retailer 12
-
$4,438 AUD
View
B+
Retailer 13
-
$4,499 AUD
View
B+
Retailer 14
-
$4,819 AUD
View
B+
Retailer 15
-
$4,879 AUD
View
B+
Retailer 16
-
$5,113 AUD
View
B
Retailer 17
-
$6,983 AUD
View
Most Expensive
NZ Jewellers
70cd373a-5ba6-4d13-8090-58c9fbdf3b5b · Oct 30
$8,731 AUD
$5,999 USD
View
Price last confirmed 7 days ago
17 more retailers have this diamond
Prices start from $3,110 AUDSave up to $3,873 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
$3,110 AUD