CaratHunter
Plans
Radiant|Natural|GIA

1.21ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 5231852725

Certificate GIA 5231852725

Diamond specifications and retailer prices

From $4,792 SGD
As of November 6, 2026
Save $6,030 SGD (56%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $10,822 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 5231852725. Listed at 25 retailers as of November 5, 2026, with prices from $4,792 to $10,822, a $6,030 spread on the same certified stone. NZ Jewellers lists it at $10,822. 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
Pavilion angle55.91°
OriginNatural
Grading LabGIA
CertificateGIA 5231852725
Dimensions7.16 × 5.34 × 3.65 mm
L/W Ratio1.34
Top View
7.16 mm5.34 mm1.21 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231852725
Side View
Table 67.0%CrownGirdle: ThickPavilion 55.91°Culet: NoneDepth 68.4%

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: $10,822 SGD|Low: $4,684 SGD|High: $10,822 SGD|Avg: $6,992 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
Retailer 15
Retailer 16
November 7, 2026
Retailer 6$5,411 SGD
Retailer 12$5,862 SGD
Retailer 14$5,862 SGD
Retailer 15$5,862 SGD
Retailer 8$5,961 SGD
Retailer 16$6,311 SGD
Retailer 2$6,371 SGD
Retailer 7$6,522 SGD
Retailer 3$6,716 SGD
Retailer 4$6,716 SGD
Retailer 13$6,764 SGD
Retailer 5$6,933 SGD
Retailer 9$7,281 SGD
Retailer 10$7,895 SGD
Retailer 11$10,305 SGD
NZ Jewellers$10,822 SGD

42 data points across 16 retailers

25 retailers$4,792 SGD to $10,822 SGD

B+
Cheapest Retailer
-
$4,792 SGD
B+
Retailer 2
-
$5,110 SGD
View
B+
Retailer 3
-
$5,112 SGD
View
B+
Retailer 4
-
$5,171 SGD
View
B+
Retailer 5
-
$5,347 SGD
View
B+
Retailer 6
-
$5,411 SGD
View
Final sale: no returns
B+
Retailer 7
-
$5,456 SGD
View
B+
Retailer 8
-
$5,543 SGD
View
B+
Retailer 9
-
$5,862 SGD
View
Retailer 10
-
$5,862 SGD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$5,862 SGD
View
B+
Retailer 12
-
$5,961 SGD
View
B
Retailer 13
-
$6,311 SGD
View
B+
Retailer 14
-
$6,371 SGD
View
Retailer 15
-
$6,522 SGD
View
Price last confirmed 29 days ago
B
Retailer 16
-
$6,669 SGD
View
B
Retailer 17
-
$6,716 SGD
View
B
Retailer 18
-
$6,716 SGD
View
B
Retailer 19
-
$6,764 SGD
View
B
Retailer 20
-
$6,933 SGD
View
Retailer 21
-
$7,144 SGD
View
Price last confirmed 15 days ago
B
Retailer 22
-
$7,281 SGD
View
B
Retailer 23
-
$7,895 SGD
View
B
Retailer 24
-
$10,305 SGD
View
Most Expensive
B
NZ Jewellers
af50deb8-0e02-43d3-920c-832d22555d90 · Nov 5
$10,822 SGD
$8,444 USD
View
24 more retailers have this diamond
Prices start from $4,792 SGDSave up to $6,030 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
$4,792 SGD