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Round|Natural|GIA

1.21ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2548809772

Certificate GIA 2548809772

Diamond specifications and retailer prices

From $2,157 AUD
As of November 6, 2026
Save $4,820 AUD (69%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,977 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 2548809772. Listed at 8 retailers as of November 5, 2026, with prices from $2,157 to $6,977, a $4,820 spread on the same certified stone. NZ Jewellers lists it at $6,977. 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 2548809772
Dimensions6.80 × 6.83 × 4.27 mm
L/W Ratio1.00
Top View
6.80 mm6.83 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2548809772
Side View
Table 56.0%Crown 35.5°Girdle: MediumPavilion 41.2°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 6
Current: $6,977 AUD|Low: $2,157 AUD|High: $6,977 AUD|Avg: $3,681 AUD|+11.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2$2,157 AUD
Retailer 7$2,583 AUD
Retailer 3$2,698 AUD
Retailer 4$3,057 AUD
Retailer 5$3,088 AUD
Retailer 6$3,678 AUD
Retailer 8$4,997 AUD
NZ Jewellers$6,977 AUD

28 data points across 8 retailers

8 retailers$2,157 AUD to $6,977 AUD

A
Cheapest Retailer
-
$2,157 AUD
A
Retailer 2
-
$2,583 AUD
View
A
Retailer 3
-
$2,698 AUD
View
A
Retailer 4
-
$3,057 AUD
View
A
Retailer 5
-
$3,088 AUD
View
A
Retailer 6
-
$3,678 AUD
View
B+
Retailer 7
-
$4,997 AUD
View
Most Expensive
B
NZ Jewellers
a5c98d07-f077-4ded-9cb2-d72a572da26b · Nov 5
$6,977 AUD
$4,884 USD
View
7 more retailers have this diamond
Prices start from $2,157 AUDSave up to $4,820 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
$2,157 AUD