Round|Natural|GIA

1.21ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2447434477

Certificate GIA 2447434477

Diamond specifications and retailer prices

From $3,555 NZD
As of November 6, 2026
Save $4,779 NZD (57%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $9,972 NZD at NZ Jewellers · As of October 17, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2447434477. Listed at 21 retailers as of November 4, 2026, with a 134% 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2447434477
Dimensions6.80 × 6.76 × 4.25 mm
L/W Ratio1.01
Top View
6.80 mm6.76 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2447434477
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.7%

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 6
Current: $5,017 NZD|Low: $3,555 NZD|High: $8,455 NZD|Avg: $5,237 NZD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 3$3,555 NZD
Retailer 6$4,329 NZD
Retailer 7$4,402 NZD
Retailer 1$5,017 NZD
Retailer 8$5,343 NZD
Retailer 2$5,552 NZD
Retailer 4$5,821 NZD
Retailer 5$8,334 NZD

38 data points across 8 retailers

21 retailers$3,555 NZD to $8,334 NZD

A
Cheapest Retailer
-
$3,555 NZD
B+
Retailer 2
-
$4,183 NZD
View
B+
Retailer 3
-
$4,272 NZD
View
B+
Retailer 4
-
$4,329 NZD
View
B+
Retailer 5
-
$4,402 NZD
View
Final sale: no returns
B+
Retailer 6
-
$4,470 NZD
View
B+
Retailer 7
-
$4,708 NZD
View
Retailer 8
-
$4,770 NZD
View
Price last confirmed 45 days ago
Retailer 9
-
$4,770 NZD
View
Price last confirmed 20 days ago
Retailer 10
-
$4,770 NZD
View
Price last confirmed 22 days ago
Retailer 11
-
$4,954 NZD
View
Price last confirmed 23 days ago
B+
Retailer 12
-
$5,017 NZD
View
B+
Retailer 13
-
$5,024 NZD
View
Retailer 14
-
$5,343 NZD
View
Price last confirmed 31 days ago
Retailer 15
-
$5,504 NZD
View
Price last confirmed 20 days ago
Retailer 16
-
$5,504 NZD
View
Price last confirmed 46 days ago
B+
Retailer 17
-
$5,552 NZD
View
B+
Retailer 18
-
$5,821 NZD
View
B
Retailer 19
-
$8,334 NZD
View
Retailer 20
-
$9,972 NZD
View
Price last confirmed 47 days ago
Most Expensive
NZ Jewellers
d05e15f4-8009-4628-b689-e15d2496a80f · Oct 17
$9,972 NZD
$5,528 USD
View
Price last confirmed 20 days ago
20 more retailers have this diamond
Prices start from $3,555 NZDSave up to $4,779 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
$3,555 NZD