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Round|Natural|GIA

1.21ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 2557157855

Certificate GIA 2557157855

Diamond specifications and retailer prices

From $4,398 SGD
As of November 5, 2026
Save $4,365 SGD (50%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $9,610 SGD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557157855. Listed at 14 retailers as of November 4, 2026, with a 99% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557157855
Dimensions6.80 × 6.82 × 4.22 mm
L/W Ratio1.00
Star length50%
Top View
6.80 mm6.82 mm1.21 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2557157855
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

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 5
Current: $4,842 SGD|Low: $4,398 SGD|High: $8,893 SGD|Avg: $6,086 SGD|-0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5$4,398 SGD
Retailer 1$4,842 SGD
Retailer 2$5,552 SGD
Retailer 3$5,831 SGD
Retailer 6$6,240 SGD
Retailer 4$8,762 SGD

32 data points across 6 retailers

14 retailers$4,398 SGD to $8,762 SGD

A
Cheapest Retailer
-
$4,398 SGD
A
Retailer 2
-
$4,842 SGD
View
Retailer 3
-
$4,998 SGD
View
Price last confirmed 28 days ago
Retailer 4
-
$4,998 SGD
View
Price last confirmed 29 days ago
Retailer 5
-
$4,998 SGD
View
Price last confirmed 38 days ago
B+
Retailer 6
-
$5,552 SGD
View
B+
Retailer 7
-
$5,646 SGD
View
B+
Retailer 8
-
$5,646 SGD
View
Retailer 9
-
$5,767 SGD
View
Price last confirmed 28 days ago
B+
Retailer 10
-
$5,824 SGD
View
B+
Retailer 11
-
$5,831 SGD
View
Retailer 12
-
$6,240 SGD
View
Price last confirmed 14 days ago
B
Retailer 13
-
$8,762 SGD
View
Most Expensive
NZ Jewellers
c50702df-7f2f-4dee-9107-310b0574e00e · Sep 28
$9,610 SGD
$7,524 USD
View
Price last confirmed 39 days ago
13 more retailers have this diamond
Prices start from $4,398 SGDSave up to $4,365 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 Round
$4,398 SGD