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1.21ct K SI2 Round Natural Diamond

EX • K/SI2 • IGI 587305986

Shape and cutting style on the report: Round brilliant

Certificate IGI 587305986

Diamond specifications and retailer prices

From $1,680 SGD
As of November 5, 2026
Save $2,744 SGD (62%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,424 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 587305986. Listed at 12 retailers as of November 5, 2026, with prices from $1,680 to $4,424, a $2,744 spread on the same certified stone. NZ Jewellers lists it at $4,424. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 587305986
Dimensions6.83 × 6.75 × 4.26 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
Faint Brown
Top View
6.83 mm6.75 mm1.21 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 587305986
Side View
Table 58.0%Crown 34.8°Girdle: MediumPavilion 41.6°Culet: NoneDepth 62.6%

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: $4,424 SGD|Low: $1,658 SGD|High: $4,424 SGD|Avg: $2,171 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 5, 2026
Retailer 3$1,679 SGD
Retailer 11$1,680 SGD
Retailer 5$1,798 SGD
Retailer 12$1,813 SGD
Retailer 14$1,813 SGD
Retailer 4$1,866 SGD
Retailer 13$1,898 SGD
Retailer 10$2,093 SGD
Retailer 6$2,129 SGD
Retailer 2$2,156 SGD
Retailer 8$2,363 SGD
Retailer 7$2,508 SGD
Retailer 9$3,322 SGD
NZ Jewellers$4,424 SGD

32 data points across 14 retailers

12 retailers$1,680 SGD to $4,424 SGD

Retailer 1
-
$1,679 SGD
Price last confirmed 43 days ago
A
Retailer 2
-
$1,680 SGD
View
A
Retailer 3
-
$1,813 SGD
View
Retailer 4
-
$1,813 SGD
View
Price last confirmed 8 days ago
Retailer 5
-
$1,866 SGD
View
Price last confirmed 13 days ago
A
Retailer 6
-
$1,898 SGD
View
B+
Retailer 7
-
$2,093 SGD
View
A
Retailer 8
-
$2,156 SGD
View
A
Retailer 9
-
$2,363 SGD
View
B+
Retailer 10
-
$2,508 SGD
View
B+
Retailer 11
-
$3,322 SGD
View
Most Expensive
B
NZ Jewellers
f93b802b-2bdf-48fe-8749-353543e40829 · Nov 5
$4,424 SGD
$3,452 USD
View
11 more retailers have this diamond
Prices start from $1,680 SGDSave up to $2,744 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
$1,680 SGD