Round|Natural|HRD

1.21ct J SI2 Round Natural Diamond

EX • J/SI2 • HRD 250000092403

Certificate HRD 250000092403

Diamond specifications and retailer prices

From $1,964 USD
As of October 30, 2026
Save $1,865 USD (49%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,545 USD 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 October 29, 2026, with a 95% 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
Color
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: Oct 30
Current: $2,715 USD|Low: $1,839 USD|High: $3,854 USD|Avg: $2,619 USD|+4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 4$1,964 USD
Retailer 3$2,006 USD
Retailer 5$2,074 USD
Retailer 6$2,174 USD
Retailer 7$2,313 USD
Retailer 1$2,715 USD
Retailer 8$3,512 USD
Retailer 2$3,829 USD

23 data points across 8 retailers

13 retailers$1,964 USD to $3,829 USD

A
Cheapest Retailer
-
$1,964 USD
B+
Retailer 2
-
$2,074 USD
View
Retailer 3
-
$2,174 USD
View
Price last confirmed 53 days ago
Retailer 4
-
$2,174 USD
View
Price last confirmed 14 days ago
Retailer 5
-
$2,174 USD
View
Price last confirmed 22 days ago
Retailer 6
-
$2,274 USD
View
Price last confirmed 15 days ago
B+
Retailer 7
-
$2,313 USD
View
Retailer 8
-
$2,509 USD
View
Price last confirmed 53 days ago
Retailer 9
-
$2,509 USD
View
Price last confirmed 21 days ago
B
Retailer 10
-
$2,715 USD
€2,586 EUR
View
B
Retailer 11
-
$3,829 USD
£3,015 GBP
View
Retailer 12
-
$4,545 USD
View
Price last confirmed 59 days ago
Most Expensive
NZ Jewellers
33755be7-11a6-4969-be68-4e4f14b16e46 · Sep 28
$4,545 USD
View
Price last confirmed 32 days ago
12 more retailers have this diamond
Prices start from $1,964 USDSave up to $1,865 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
$1,964 USD