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1.21ct E SI2 Round Natural Diamond

EX • E/SI2 • IGI 779634139

Shape and cutting style on the report: Round brilliant

Certificate IGI 779634139

Diamond specifications and retailer prices

From $2,464 SGD
As of November 5, 2026
Save $3,989 SGD (62%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,453 SGD at NZ Jewellers · As of November 5, 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 IGI 779634139. Listed at 11 retailers as of November 5, 2026, with prices from $2,464 to $6,453, a $3,989 spread on the same certified stone. NZ Jewellers lists it at $6,453. 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
FluorescenceNone
Crown angle33.6°
Pavilion angle41.3°
OriginNatural
Grading LabIGI
CertificateIGI 779634139
Dimensions6.84 × 6.86 × 4.23 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.84 mm6.86 mm1.21 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 779634139
Side View
Table 57.0%Crown 33.6°Girdle: THN-MEDPavilion 41.3°Culet: NoneDepth 61.8%

Caratlytics Score

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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 5
Current: $6,453 SGD|Low: $2,410 SGD|High: $6,613 SGD|Avg: $3,646 SGD|-2.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 4$2,464 SGD
Retailer 2$2,709 SGD
Retailer 7$2,791 SGD
Retailer 9$2,850 SGD
Retailer 8$3,076 SGD
Retailer 3$3,087 SGD
Retailer 11$3,229 SGD
Retailer 10$3,561 SGD
Retailer 6$3,735 SGD
Retailer 5$5,393 SGD
NZ Jewellers$6,453 SGD

36 data points across 11 retailers

11 retailers$2,464 SGD to $6,453 SGD

A
Cheapest Retailer
-
$2,464 SGD
A
Retailer 2
-
$2,709 SGD
View
A
Retailer 3
-
$2,791 SGD
View
A
Retailer 4
-
$2,850 SGD
View
Final sale: no returns
A
Retailer 5
-
$3,076 SGD
View
A
Retailer 6
-
$3,087 SGD
View
A
Retailer 7
-
$3,229 SGD
View
A
Retailer 8
-
$3,561 SGD
View
A
Retailer 9
-
$3,735 SGD
View
B+
Retailer 10
-
$5,393 SGD
View
Most Expensive
B+
NZ Jewellers
2729b77f-b415-4795-b31a-ecc61c79a24e · Nov 5
$6,453 SGD
$5,052 USD
View
10 more retailers have this diamond
Prices start from $2,464 SGDSave up to $3,989 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
$2,464 SGD