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Round|Natural|IGI

1.21ct K I1 Round Natural Diamond

VG • K/I1 • IGI 539243378

Shape and cutting style on the report: Round brilliant

Certificate IGI 539243378

Diamond specifications and retailer prices

From $1,511 AUD
As of November 5, 2026
Save $683 AUD (31%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,848 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 K colour (faint-tinted) and I1 clarity (included), with a very-good cut grade and certified by IGI 539243378. Listed at 7 retailers as of November 5, 2026, with a 45% 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
K
Colour
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.6°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 539243378
Dimensions6.82 × 6.93 × 4.11 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
Faint Brown
Top View
6.82 mm6.93 mm1.21 ctK / I1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 539243378
Side View
Table 65.5%Crown 36.6°Girdle: MediumPavilion 41.1°Culet: NoneDepth 59.7%

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 5
Current: $2,194 AUD|Low: $1,026 AUD|High: $2,210 AUD|Avg: $1,636 AUD|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 6$1,026 AUD
Retailer 5$1,511 AUD
Retailer 3$1,577 AUD
Retailer 2$1,637 AUD
Retailer 4$1,877 AUD
Retailer 1$2,194 AUD

17 data points across 6 retailers

7 retailers$1,511 AUD to $2,194 AUD

B+
Cheapest Retailer
-
$1,511 AUD
Retailer 2
-
$1,577 AUD
View
Price last confirmed 29 days ago
B+
Retailer 3
-
$1,637 AUD
View
Retailer 4
-
$1,638 AUD
View
Price last confirmed 38 days ago
Retailer 5
-
$1,820 AUD
View
Price last confirmed 38 days ago
B+
Retailer 6
-
$2,194 AUD
View
Most Expensive
NZ Jewellers
65551074-f544-4321-bf60-99bc5aed9af7 · Sep 28
$3,848 AUD
$2,694 USD
View
Price last confirmed 39 days ago
6 more retailers have this diamond
Prices start from $1,511 AUDSave up to $683 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
$1,511 AUD