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Radiant|Natural|GIA

1.21ct J SI1 Radiant Natural Diamond

VG • J/SI1 • GIA 2245114745

Certificate GIA 2245114745

Diamond specifications and retailer prices

From $3,523 NZD
As of November 4, 2026
Save $2,848 NZD (45%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,371 NZD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2245114745. Listed at 11 retailers as of November 4, 2026, with prices from $3,523 to $6,371, a $2,848 spread on the same certified stone. Helzberg Diamonds lists it at $6,371. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2245114745
Dimensions7.09 × 5.43 × 3.74 mm
L/W Ratio1.31
Top View
7.09 mm5.43 mm1.21 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245114745
Side View
Table 70.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 68.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $6,371 NZD|Low: $3,523 NZD|High: $6,371 NZD|Avg: $4,343 NZD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 9$3,523 NZD
Retailer 10$3,554 NZD
Retailer 8$3,565 NZD
Retailer 3$3,869 NZD
Retailer 2$3,886 NZD
Retailer 5$4,228 NZD
Retailer 11$4,517 NZD
Retailer 4$4,993 NZD
Retailer 7$5,419 NZD
Retailer 6$5,848 NZD
Helzberg Diamonds$6,371 NZD

8 data points across 11 retailers

11 retailers$3,523 NZD to $6,371 NZD

B+
Cheapest Retailer
-
$3,523 NZD
B+
Retailer 2
-
$3,554 NZD
View
B+
Retailer 3
-
$3,565 NZD
View
B+
Retailer 4
-
$3,869 NZD
View
B+
Retailer 5
-
$3,886 NZD
View
B+
Retailer 6
-
$4,228 NZD
View
B
Retailer 7
-
$4,517 NZD
View
B
Retailer 8
-
$4,993 NZD
View
B
Retailer 9
-
$5,419 NZD
View
B
Retailer 10
-
$5,848 NZD
View
Most Expensive
B
Helzberg Diamonds
XZRIIKLHHKNKL · Nov 6
$6,371 NZD
$3,532 USD
View
10 more retailers have this diamond
Prices start from $3,523 NZDSave up to $2,848 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.

B+
1.21ct Radiant
$3,523 NZD