Round|Natural|HRD

1.21ct F SI2 Round Natural Diamond

EX • F/SI2 • HRD 240000199388

Certificate HRD 240000199388

Diamond specifications and retailer prices

From $1,993 USD
As of November 4, 2026
Save $2,619 USD (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,612 USD at NZ Jewellers · As of November 2, 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by HRD 240000199388. Listed at 14 retailers as of November 2, 2026, with prices from $1,993 to $4,612, a $2,619 spread on the same certified stone. NZ Jewellers lists it at $4,612. 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
F
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35.2°
Pavilion angle41.4°
OriginNatural
Grading LabHRD
CertificateHRD 240000199388
Dimensions6.75 × 6.71 × 4.27 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
The stone in accordance with the mentioned number has been identified as a natural gem diamond.
Top View
6.75 mm6.71 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateHRD 240000199388
Side View
Table 58.0%Crown 35.2°Girdle: MediumPavilion 41.4°Culet: NoneDepth 63.4%

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 4
Current: $4,612 USD|Low: $1,866 USD|High: $4,612 USD|Avg: $2,662 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 4$1,993 USD
Retailer 5$2,035 USD
Retailer 7$2,101 USD
Retailer 8$2,206 USD
Retailer 10$2,206 USD
Retailer 6$2,308 USD
Retailer 9$2,545 USD
Retailer 2$2,737 USD
Retailer 3$3,854 USD
NZ Jewellers$4,612 USD

27 data points across 10 retailers

14 retailers$1,993 USD to $4,612 USD

A
Cheapest Retailer
-
$1,993 USD
A
Retailer 2
-
$2,035 USD
View
Final sale: no returns
A
Retailer 3
-
$2,101 USD
View
Retailer 4
-
$2,206 USD
View
Price last confirmed 53 days ago
Retailer 5
-
$2,206 USD
View
Price last confirmed 25 days ago
A
Retailer 6
-
$2,206 USD
View
A
Retailer 7
-
$2,308 USD
View
Retailer 8
-
$2,545 USD
View
Price last confirmed 53 days ago
A
Retailer 9
-
$2,545 USD
View
A
Retailer 10
-
$2,737 USD
View
B+
Retailer 11
-
$3,854 USD
View
B
Retailer 12
-
$4,331 USD
View
Retailer 13
-
$4,612 USD
View
Price last confirmed 52 days ago
Most Expensive
B
NZ Jewellers
3400ff51-b38b-445a-a925-c9e3f6b5b1aa · Nov 2
$4,612 USD
View
13 more retailers have this diamond
Prices start from $1,993 USDSave up to $2,619 USD

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
$1,993 USD