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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 $3,723 SGD
As of November 6, 2026
Save $4,857 SGD (57%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $8,580 SGD 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 $3,723 to $8,580, a $4,857 spread on the same certified stone. NZ Jewellers lists it at $8,580. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $8,580 SGD|Low: $3,691 SGD|High: $8,920 SGD|Avg: $5,460 SGD|-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$3,723 SGD
Retailer 16$3,859 SGD
Retailer 12$4,423 SGD
Retailer 7$4,441 SGD
Retailer 10$4,545 SGD
Retailer 21$4,637 SGD
Retailer 18$4,683 SGD
Retailer 2$4,736 SGD
Retailer 17$4,777 SGD
Retailer 6$4,925 SGD
Retailer 11$4,925 SGD
Retailer 13$4,988 SGD
Retailer 5$5,112 SGD
Retailer 9$5,114 SGD
Retailer 14$5,261 SGD
Retailer 8$5,683 SGD
Retailer 15$5,683 SGD
Retailer 19$5,733 SGD
Retailer 20$6,011 SGD
Retailer 22$8,236 SGD
Retailer 4$8,479 SGD
NZ Jewellers$8,580 SGD

21 data points across 22 retailers

24 retailers$3,723 SGD to $8,580 SGD

A
Cheapest Retailer
-
$3,723 SGD
A
Retailer 2
-
$3,859 SGD
View
B+
Retailer 3
-
$4,423 SGD
View
B+
Retailer 4
-
$4,441 SGD
View
B+
Retailer 5
-
$4,545 SGD
View
Final sale: no returns
B+
Retailer 6
-
$4,637 SGD
View
B+
Retailer 7
-
$4,683 SGD
View
B+
Retailer 8
-
$4,736 SGD
View
B+
Retailer 9
-
$4,777 SGD
View
B+
Retailer 10
-
$4,837 SGD
View
Retailer 11
-
$4,925 SGD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$4,925 SGD
View
B+
Retailer 13
-
$4,988 SGD
View
B+
Retailer 14
-
$5,105 SGD
View
B+
Retailer 15
-
$5,112 SGD
View
B+
Retailer 16
-
$5,114 SGD
View
B+
Retailer 17
-
$5,261 SGD
View
Retailer 18
-
$5,645 SGD
View
Price last confirmed 34 days ago
B+
Retailer 19
-
$5,683 SGD
View
B+
Retailer 20
-
$5,733 SGD
View
B+
Retailer 21
-
$6,011 SGD
View
B
Retailer 22
-
$8,236 SGD
View
Retailer 23
-
$8,479 SGD
View
Price last confirmed 10 days ago
Most Expensive
B
NZ Jewellers
85eed898-47ab-4f27-9696-efb97d0955f7 · Nov 5
$8,580 SGD
$6,695 USD
View
23 more retailers have this diamond
Prices start from $3,723 SGDSave up to $4,857 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 Radiant
$3,723 SGD