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Round|Natural|GIA

1.21ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 1537184144

Certificate GIA 1537184144

Diamond specifications and retailer prices

From $1,405 SGD
As of November 6, 2026
Save $3,238 SGD (70%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,643 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1537184144. Listed at 12 retailers as of November 5, 2026, with prices from $1,405 to $4,643, a $3,238 spread on the same certified stone. NZ Jewellers lists it at $4,643. 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
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1537184144
Dimensions6.75 × 6.79 × 4.22 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
6.75 mm6.79 mm1.21 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1537184144
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
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 6
Current: $1,418 SGD|Low: $1,405 SGD|High: $2,648 SGD|Avg: $1,933 SGD|-3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8$1,405 SGD
Retailer 1$1,418 SGD
Retailer 6$1,765 SGD
Retailer 2$1,871 SGD
Retailer 7$1,991 SGD
Retailer 5$2,025 SGD
Retailer 3$2,322 SGD
Retailer 4$2,631 SGD

41 data points across 8 retailers

12 retailers$1,405 SGD to $4,643 SGD

A
Cheapest Retailer
-
$1,405 SGD
A
Retailer 2
-
$1,418 SGD
View
B+
Retailer 3
-
$1,765 SGD
View
A
Retailer 4
-
$1,871 SGD
View
B+
Retailer 5
-
$1,903 SGD
View
Retailer 6
-
$1,903 SGD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$1,991 SGD
View
B+
Retailer 8
-
$2,025 SGD
View
B+
Retailer 9
-
$2,196 SGD
View
B+
Retailer 10
-
$2,322 SGD
View
B+
Retailer 11
-
$2,631 SGD
View
Most Expensive
C
NZ Jewellers
b749ebb2-c399-4b76-b0fb-19c871a8799a · Nov 5
$4,643 SGD
$3,635 USD
View
11 more retailers have this diamond
Prices start from $1,405 SGDSave up to $3,238 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
$1,405 SGD