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Round|Natural|HRD

1.21ct K SI2 Round Natural Diamond

VG • K/SI2 • HRD 190000147758

Certificate HRD 190000147758

Diamond specifications and retailer prices

From $3,135 AUD
As of November 5, 2026
Save $891 AUD (22%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $7,255 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 SI2 clarity (slightly-included), with a very-good cut grade and certified by HRD 190000147758. Listed at 7 retailers as of November 5, 2026, with a 28% 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
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabHRD
CertificateHRD 190000147758
Dimensions6.65 × 6.69 × 4.22 mm
L/W Ratio1.01
Top View
6.65 mm6.69 mm1.21 ctK / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateHRD 190000147758
Side View
TableCrownGirdlePavilionCulet: NoneDepth

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: $4,026 AUD|Low: $3,135 AUD|High: $4,075 AUD|Avg: $3,576 AUD|+1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 2$3,135 AUD
Retailer 3$3,470 AUD
Retailer 4$3,673 AUD
Retailer 1$4,026 AUD

22 data points across 4 retailers

7 retailers$3,135 AUD to $4,026 AUD

B+
Cheapest Retailer
-
$3,135 AUD
Retailer 2
-
$3,470 AUD
View
Price last confirmed 39 days ago
Retailer 3
-
$3,630 AUD
View
Price last confirmed 38 days ago
B
Retailer 4
-
$3,673 AUD
View
Retailer 5
-
$4,004 AUD
View
Price last confirmed 38 days ago
B
Retailer 6
-
$4,026 AUD
View
Most Expensive
NZ Jewellers
6f7b4454-832f-4f23-8792-1483767f7b74 · Sep 28
$7,255 AUD
$4,985 USD
View
Price last confirmed 39 days ago
6 more retailers have this diamond
Prices start from $3,135 AUDSave up to $891 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
$3,135 AUD