Round|Natural|HRD

1.21ct J SI2 Round Natural Diamond

EX • J/SI2 • HRD 250000092403

Certificate HRD 250000092403

Diamond specifications and retailer prices

From $3,543 NZD
As of November 6, 2026
Save $3,308 NZD (48%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,199 NZD 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by HRD 250000092403. Listed at 13 retailers as of November 4, 2026, with a 93% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle40.9°
OriginNatural
Grading LabHRD
CertificateHRD 250000092403
Dimensions6.74 × 6.80 × 4.28 mm
L/W Ratio1.01
Top View
6.74 mm6.80 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 250000092403
Side View
Table 56.0%Crown 36.6°GirdlePavilion 40.9°Culet: NoneDepth 63.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,865 NZD|Low: $3,317 NZD|High: $6,952 NZD|Avg: $4,694 NZD|+2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 4$3,543 NZD
Retailer 3$3,619 NZD
Retailer 5$3,741 NZD
Retailer 6$3,922 NZD
Retailer 7$4,171 NZD
Retailer 1$4,865 NZD
Retailer 8$6,335 NZD
Retailer 2$6,851 NZD

25 data points across 8 retailers

13 retailers$3,543 NZD to $6,851 NZD

A
Cheapest Retailer
-
$3,543 NZD
B+
Retailer 2
-
$3,741 NZD
View
Retailer 3
-
$3,922 NZD
View
Price last confirmed 60 days ago
Retailer 4
-
$3,922 NZD
View
Price last confirmed 21 days ago
Retailer 5
-
$3,922 NZD
View
Price last confirmed 29 days ago
Retailer 6
-
$4,102 NZD
View
Price last confirmed 22 days ago
B+
Retailer 7
-
$4,171 NZD
View
Retailer 8
-
$4,526 NZD
View
Price last confirmed 60 days ago
Retailer 9
-
$4,526 NZD
View
Price last confirmed 28 days ago
B+
Retailer 10
-
$4,865 NZD
View
B
Retailer 11
-
$6,851 NZD
View
Retailer 12
-
$8,199 NZD
View
Price last confirmed 66 days ago
Most Expensive
NZ Jewellers
33755be7-11a6-4969-be68-4e4f14b16e46 · Sep 28
$8,199 NZD
$4,545 USD
View
Price last confirmed 39 days ago
12 more retailers have this diamond
Prices start from $3,543 NZDSave up to $3,308 NZD

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
$3,543 NZD