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Radiant|Natural|GIA

1.21ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 5241113102

Certificate GIA 5241113102

Diamond specifications and retailer prices

From $5,036 NZD
As of November 6, 2026
Save $5,780 NZD (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $10,816 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5241113102. Listed at 21 retailers as of November 5, 2026, with prices from $5,036 to $10,816, a $5,780 spread on the same certified stone. NZ Jewellers lists it at $10,816. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5241113102
Dimensions7.40 × 5.19 × 3.64 mm
L/W Ratio1.43
Culet sizeNone
Top View
7.40 mm5.19 mm1.21 ctJ / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5241113102
Side View
Table 69.0%CrownGirdle: VTK-VTKPavilionCulet: NoneDepth 70.0%

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 6
Current: $10,816 NZD|Low: $5,036 NZD|High: $10,816 NZD|Avg: $6,594 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 7, 2026
Retailer 12$5,036 NZD
Retailer 10$5,156 NZD
Retailer 11$5,282 NZD
Retailer 7$5,466 NZD
Retailer 5$5,625 NZD
Retailer 9$5,625 NZD
Retailer 8$5,662 NZD
Retailer 6$5,841 NZD
Retailer 4$5,888 NZD
Retailer 15$6,021 NZD
Retailer 3$6,155 NZD
Retailer 16$6,189 NZD
Retailer 2$6,424 NZD
Retailer 20$6,489 NZD
Retailer 21$6,543 NZD
Retailer 17$7,225 NZD
Retailer 18$7,576 NZD
Retailer 13$7,851 NZD
Retailer 14$9,050 NZD
Retailer 19$10,354 NZD
NZ Jewellers$10,816 NZD

16 data points across 21 retailers

21 retailers$5,036 NZD to $10,816 NZD

B+
Cheapest Retailer
-
$5,036 NZD
B+
Retailer 2
-
$5,156 NZD
View
B
Retailer 3
-
$5,282 NZD
View
B
Retailer 4
-
$5,466 NZD
View
B
Retailer 5
-
$5,625 NZD
View
Retailer 6
-
$5,625 NZD
View
Price last confirmed 9 days ago
B
Retailer 7
-
$5,662 NZD
View
B
Retailer 8
-
$5,841 NZD
View
B
Retailer 9
-
$5,888 NZD
View
B
Retailer 10
-
$6,021 NZD
View
B
Retailer 11
-
$6,155 NZD
View
B
Retailer 12
-
$6,189 NZD
View
B
Retailer 13
-
$6,424 NZD
View
B
Retailer 14
-
$6,489 NZD
View
B
Retailer 15
-
$6,543 NZD
View
B
Retailer 16
-
$7,225 NZD
View
B
Retailer 17
-
$7,576 NZD
View
B
Retailer 18
-
$7,851 NZD
View
B
Retailer 19
-
$9,050 NZD
View
B
Retailer 20
-
$10,354 NZD
View
Most Expensive
B
NZ Jewellers
b2e4fea6-1d79-4214-8cff-e134bc66ec8b · Nov 5
$10,816 NZD
$5,996 USD
View
20 more retailers have this diamond
Prices start from $5,036 NZDSave up to $5,780 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
$5,036 NZD