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Round|Natural|GIA

1.21ct K I1 Round Natural Diamond

VG • K/I1 • GIA 2366245631

Certificate GIA 2366245631

Diamond specifications and retailer prices

From $2,541 AUD
As of November 6, 2026
Save $3,861 AUD (60%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,403 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 K colour (faint-tinted) and I1 clarity (included), with a very-good cut grade and certified by GIA 2366245631. Listed at 8 retailers as of November 5, 2026, with prices from $2,541 to $6,403, a $3,861 spread on the same certified stone. NZ Jewellers lists it at $6,403. 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
K
Colour
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2366245631
Dimensions6.61 × 6.67 × 4.27 mm
L/W Ratio1.01
Star length45%
Lower girdle80%
Top View
6.61 mm6.67 mm1.21 ctK / I1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2366245631
Side View
Table 56.0%Crown 36.5°GirdlePavilion 40.6°Culet: NoneDepth 64.3%

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: $6,403 AUD|Low: $2,523 AUD|High: $6,403 AUD|Avg: $3,528 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 3$2,541 AUD
Retailer 8$2,767 AUD
Retailer 4$3,063 AUD
Retailer 6$3,063 AUD
Retailer 10$3,188 AUD
Retailer 5$3,204 AUD
Retailer 7$3,534 AUD
Retailer 9$3,818 AUD
Retailer 2$4,157 AUD
NZ Jewellers$6,403 AUD

18 data points across 10 retailers

8 retailers$2,541 AUD to $6,403 AUD

B+
Cheapest Retailer
-
$2,541 AUD
B+
Retailer 2
-
$2,767 AUD
View
B
Retailer 3
-
$3,063 AUD
View
Retailer 4
-
$3,063 AUD
View
Price last confirmed 8 days ago
B
Retailer 5
-
$3,204 AUD
View
B
Retailer 6
-
$3,534 AUD
View
B
Retailer 7
-
$4,157 AUD
View
Most Expensive
C
NZ Jewellers
40b4cca8-f78e-4904-bdeb-db19a48cc911 · Nov 5
$6,403 AUD
$4,482 USD
View
7 more retailers have this diamond
Prices start from $2,541 AUDSave up to $3,861 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
$2,541 AUD