CaratHunter
Plans
Round|Natural|GIA

1.21ct J SI1 Round Natural Diamond

VG • J/SI1 • GIA 2457091274

Certificate GIA 2457091274

Diamond specifications and retailer prices

From $3,222 AUD
As of November 6, 2026
Save $3,592 AUD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,153 AUD at NZ Jewellers · As of September 28, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 2457091274. Listed at 16 retailers as of November 4, 2026, with a 111% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2457091274
Dimensions6.69 × 6.64 × 4.27 mm
L/W Ratio1.01
Top View
6.69 mm6.64 mm1.21 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2457091274
Side View
Table 56.0%CrownGirdle: ThickPavilionCulet: NoneDepth 64.1%

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 6
Current: $4,103 AUD|Low: $3,184 AUD|High: $6,915 AUD|Avg: $4,377 AUD|+2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5$3,222 AUD
Retailer 6$3,493 AUD
Retailer 7$3,599 AUD
Retailer 9$3,842 AUD
Retailer 1$4,103 AUD
Retailer 8$4,369 AUD
Retailer 3$4,759 AUD
Retailer 2$4,842 AUD
Retailer 4$6,814 AUD

41 data points across 9 retailers

16 retailers$3,222 AUD to $6,814 AUD

B+
Cheapest Retailer
-
$3,222 AUD
B+
Retailer 2
-
$3,493 AUD
View
B+
Retailer 3
-
$3,599 AUD
View
Final sale: no returns
B
Retailer 4
-
$3,842 AUD
View
Retailer 5
-
$3,900 AUD
View
Price last confirmed 30 days ago
Retailer 6
-
$3,900 AUD
View
Price last confirmed 30 days ago
Retailer 7
-
$4,050 AUD
View
Price last confirmed 39 days ago
B
Retailer 8
-
$4,103 AUD
View
B
Retailer 9
-
$4,104 AUD
View
B
Retailer 10
-
$4,162 AUD
View
Retailer 11
-
$4,369 AUD
View
Price last confirmed 31 days ago
Retailer 12
-
$4,500 AUD
View
Price last confirmed 39 days ago
B
Retailer 13
-
$4,759 AUD
View
B
Retailer 14
-
$4,842 AUD
View
B
Retailer 15
-
$6,814 AUD
View
Most Expensive
NZ Jewellers
824644bc-4f19-464d-8bcb-18b453c455d6 · Sep 28
$8,153 AUD
$5,602 USD
View
Price last confirmed 39 days ago
15 more retailers have this diamond
Prices start from $3,222 AUDSave up to $3,592 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
$3,222 AUD