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Radiant|Natural|GIA

1.21ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 2556361020

Certificate GIA 2556361020

Diamond specifications and retailer prices

From $5,240 NZD
As of November 6, 2026
Save $6,837 NZD (57%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $12,077 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556361020. Listed at 24 retailers as of November 5, 2026, with prices from $5,240 to $12,077, a $6,837 spread on the same certified stone. NZ Jewellers lists it at $12,077. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556361020
Dimensions7.05 × 5.43 × 3.73 mm
L/W Ratio1.30
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.05 mm5.43 mm1.21 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556361020
Side View
Table 68.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.7%

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: $12,077 NZD|Low: $5,195 NZD|High: $12,555 NZD|Avg: $7,684 NZD|-3.8%
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
Retailer 22
November 7, 2026
Retailer 3$5,240 NZD
Retailer 16$5,432 NZD
Retailer 12$6,225 NZD
Retailer 7$6,251 NZD
Retailer 10$6,397 NZD
Retailer 21$6,527 NZD
Retailer 18$6,591 NZD
Retailer 2$6,665 NZD
Retailer 17$6,723 NZD
Retailer 6$6,932 NZD
Retailer 11$6,932 NZD
Retailer 13$7,021 NZD
Retailer 5$7,196 NZD
Retailer 9$7,198 NZD
Retailer 14$7,405 NZD
Retailer 8$7,998 NZD
Retailer 15$7,998 NZD
Retailer 19$8,069 NZD
Retailer 20$8,460 NZD
Retailer 22$11,592 NZD
Retailer 4$11,935 NZD
NZ Jewellers$12,077 NZD

21 data points across 22 retailers

24 retailers$5,240 NZD to $12,077 NZD

A
Cheapest Retailer
-
$5,240 NZD
A
Retailer 2
-
$5,432 NZD
View
B+
Retailer 3
-
$6,225 NZD
View
B+
Retailer 4
-
$6,251 NZD
View
B+
Retailer 5
-
$6,397 NZD
View
Final sale: no returns
B+
Retailer 6
-
$6,527 NZD
View
B+
Retailer 7
-
$6,591 NZD
View
B+
Retailer 8
-
$6,665 NZD
View
B+
Retailer 9
-
$6,723 NZD
View
B+
Retailer 10
-
$6,808 NZD
View
Retailer 11
-
$6,932 NZD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$6,932 NZD
View
B+
Retailer 13
-
$7,021 NZD
View
B+
Retailer 14
-
$7,185 NZD
View
B+
Retailer 15
-
$7,196 NZD
View
B+
Retailer 16
-
$7,198 NZD
View
B+
Retailer 17
-
$7,405 NZD
View
Retailer 18
-
$7,946 NZD
View
Price last confirmed 34 days ago
B+
Retailer 19
-
$7,998 NZD
View
B+
Retailer 20
-
$8,069 NZD
View
B+
Retailer 21
-
$8,460 NZD
View
B
Retailer 22
-
$11,592 NZD
View
Retailer 23
-
$11,935 NZD
View
Price last confirmed 10 days ago
Most Expensive
B
NZ Jewellers
85eed898-47ab-4f27-9696-efb97d0955f7 · Nov 5
$12,077 NZD
$6,695 USD
View
23 more retailers have this diamond
Prices start from $5,240 NZDSave up to $6,837 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 Radiant
$5,240 NZD