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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 $3,072 USD
HK$24,000 HKD
Save $4,087 USD (57%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $7,159 USD at NZ Jewellers
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 25 retailers, with prices from $3,072 to $7,159 at NZ Jewellers, a $4,087 spread on the same certified stone. 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
Color
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 →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Sep 29
Current: $7,159 USD|Low: $3,072 USD|High: $7,159 USD|Avg: $4,524 USD
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
October 1, 2026
Retailer 3$3,072 USD
Retailer 11$3,294 USD
Retailer 9$3,476 USD
Retailer 7$3,774 USD
Retailer 8$3,775 USD
Retailer 10$3,983 USD
Retailer 13$4,046 USD
Retailer 5$4,109 USD
Retailer 6$4,109 USD
Retailer 16$4,109 USD
Retailer 4$4,168 USD
Retailer 15$4,387 USD
Retailer 12$4,562 USD
Retailer 2$4,811 USD
Retailer 18$4,955 USD
Retailer 17$6,699 USD
Retailer 14$6,955 USD
NZ Jewellers$7,159 USD

20 data points across 18 retailers

25 retailers$3,072 USD to $7,159 USD

B+
Cheapest Retailer
-
$3,072 USD
HK$24,000 HKD
B+
Retailer 2
-
$3,294 USD
₹313,700 INR
View
B+
Retailer 3
-
$3,476 USD
View
B+
Retailer 4
-
$3,576 USD
SGD 4,833 SGD
View
B+
Retailer 5
-
$3,661 USD
View
Price last confirmed 31 days ago
B+
Retailer 6
-
$3,687 USD
View
B+
Retailer 7
-
$3,774 USD
View
B+
Retailer 8
-
$3,775 USD
View
B
Retailer 9
-
$3,910 USD
SGD 5,284 SGD
View
B
Retailer 10
-
$3,983 USD
A$6,128 AUD
View
B
Retailer 11
-
$4,046 USD
£3,186 GBP
View
B
Retailer 12
-
$4,109 USD
View
B
Retailer 13
-
$4,109 USD
View
B
Retailer 14
-
$4,109 USD
View
B
Retailer 15
-
$4,177 USD
£3,289 GBP
View
B
Retailer 16
-
$4,257 USD
View
B
Retailer 17
-
$4,377 USD
View
B
Retailer 18
-
$4,387 USD
A$6,750 AUD
View
B
Retailer 19
-
$4,562 USD
€4,345 EUR
View
B
Retailer 20
-
$4,741 USD
View
B
Retailer 21
-
$4,811 USD
₹458,189 INR
View
B
Retailer 22
-
$4,955 USD
ZAR 80,044 ZAR
View
B
Retailer 23
-
$6,699 USD
£5,275 GBP
View
B
Retailer 24
-
$6,955 USD
£5,476 GBP
View
Most Expensive
C
NZ Jewellers
dc9e00cf-02fc-488d-8813-648637e08900 · Sep 30
$7,159 USD
View
24 more retailers have this diamond
Prices start from $3,072 USDSave up to $4,087 USD

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.

B+
1.21ct Radiant
$3,072 USD