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Round|Natural|HRD

1.21ct J SI2 Round Natural Diamond

EX • J/SI2 • HRD 250000092403

Certificate HRD 250000092403

Diamond specifications and retailer prices

From $2,511 SGD
$1,964 USD
As of October 30, 2026
Save $2,384 SGD (49%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,810 SGD 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
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

How it works →
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: $3,471 SGD|Low: $2,351 SGD|High: $4,928 SGD|Avg: $3,348 SGD|+4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 4$2,511 SGD
Retailer 3$2,564 SGD
Retailer 5$2,651 SGD
Retailer 6$2,779 SGD
Retailer 7$2,957 SGD
Retailer 1$3,471 SGD
Retailer 8$4,490 SGD
Retailer 2$4,895 SGD

23 data points across 8 retailers

13 retailers$2,511 SGD to $4,895 SGD

A
Cheapest Retailer
-
$2,511 SGD
$1,964 USD
B+
Retailer 2
-
$2,651 SGD
$2,074 USD
View
Retailer 3
-
$2,779 SGD
$2,174 USD
View
Price last confirmed 54 days ago
Retailer 4
-
$2,779 SGD
$2,174 USD
View
Price last confirmed 15 days ago
Retailer 5
-
$2,779 SGD
$2,174 USD
View
Price last confirmed 23 days ago
Retailer 6
-
$2,907 SGD
$2,274 USD
View
Price last confirmed 15 days ago
B+
Retailer 7
-
$2,957 SGD
$2,313 USD
View
Retailer 8
-
$3,208 SGD
$2,509 USD
View
Price last confirmed 54 days ago
Retailer 9
-
$3,208 SGD
$2,509 USD
View
Price last confirmed 22 days ago
B
Retailer 10
-
$3,471 SGD
€2,586 EUR
View
B
Retailer 11
-
$4,895 SGD
£3,015 GBP
View
Retailer 12
-
$5,810 SGD
$4,545 USD
View
Price last confirmed 60 days ago
Most Expensive
NZ Jewellers
33755be7-11a6-4969-be68-4e4f14b16e46 · Sep 28
$5,810 SGD
$4,545 USD
View
Price last confirmed 33 days ago
12 more retailers have this diamond
Prices start from $2,511 SGDSave up to $2,384 SGD

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
$2,511 SGD