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Radiant|Natural|GIA

1.21ct F SI1 Radiant Natural Diamond

EX • F/SI1 • GIA 5526904201

Certificate GIA 5526904201

Diamond specifications and retailer prices

From $5,446 SGD
As of November 5, 2026
Save $6,081 SGD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $11,527 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 F 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 5526904201. Listed at 20 retailers as of November 5, 2026, with prices from $5,446 to $11,527, a $6,081 spread on the same certified stone. NZ Jewellers lists it at $11,527. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle33.5°
OriginNatural
Grading LabGIA
CertificateGIA 5526904201
Dimensions7.12 × 5.27 × 3.52 mm
L/W Ratio1.35
Girdle conditionPolished
Top View
7.12 mm5.27 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5526904201
Side View
Table 66.0%CrownGirdle: STK-THKPavilion 33.5°Culet: NDepth 66.7%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $11,527 SGD|Low: $4,803 SGD|High: $11,527 SGD|Avg: $7,406 SGD
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
November 7, 2026
Retailer 12$5,446 SGD
Retailer 13$5,765 SGD
Retailer 6$5,883 SGD
Retailer 3$6,244 SGD
Retailer 4$6,244 SGD
Retailer 5$6,244 SGD
Retailer 9$6,658 SGD
Retailer 14$6,948 SGD
Retailer 7$7,332 SGD
Retailer 10$7,755 SGD
Retailer 11$8,409 SGD
Retailer 2$8,616 SGD
Retailer 8$10,918 SGD
NZ Jewellers$11,527 SGD

45 data points across 14 retailers

20 retailers$5,446 SGD to $11,527 SGD

B+
Cheapest Retailer
-
$5,446 SGD
B
Retailer 2
-
$5,765 SGD
View
Final sale: no returns
B
Retailer 3
-
$5,812 SGD
View
B
Retailer 4
-
$5,852 SGD
View
B
Retailer 5
-
$5,883 SGD
View
B
Retailer 6
-
$6,244 SGD
View
B
Retailer 7
-
$6,244 SGD
View
Retailer 8
-
$6,244 SGD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$6,658 SGD
View
B
Retailer 10
-
$6,804 SGD
View
Retailer 11
-
$6,948 SGD
View
Price last confirmed 29 days ago
B
Retailer 12
-
$7,204 SGD
View
Retailer 13
-
$7,332 SGD
View
Retailer 14
-
$7,606 SGD
View
Price last confirmed 15 days ago
B
Retailer 15
-
$7,755 SGD
View
B
Retailer 16
-
$7,779 SGD
View
B
Retailer 17
-
$8,409 SGD
View
Retailer 18
-
$8,616 SGD
View
B
Retailer 19
-
$10,918 SGD
View
Most Expensive
B
NZ Jewellers
3c3d90cd-a52c-4c09-96da-7034f867374f · Nov 5
$11,527 SGD
$8,994 USD
View
19 more retailers have this diamond
Prices start from $5,446 SGDSave up to $6,081 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.

B+
1.21ct Radiant
$5,446 SGD