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Marquise|Natural|IGI

1.21ct E SI2 Marquise Natural Diamond

VG • E/SI2 • IGI 830653516

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 830653516

Diamond specifications and retailer prices

From $3,046 SGD
As of November 5, 2026
Save $2,611 SGD (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $5,657 SGD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 830653516. Listed at 8 retailers as of November 5, 2026, with prices from $3,046 to $5,657, a $2,611 spread on the same certified stone. Helzberg Diamonds lists it at $5,657. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
E
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39°
Pavilion angle38.7°
OriginNatural
Grading LabIGI
CertificateIGI 830653516
Dimensions10.57 × 5.59 × 3.35 mm
L/W Ratio1.89
Girdle conditionFaceted
Top View
10.57 mm5.59 mm1.21 ctE / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 830653516
Side View
Table 60.0%Crown 39°Girdle: MediumPavilion 38.7°Culet: NoneDepth 59.9%

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 5
Current: $5,657 SGD|Low: $3,043 SGD|High: $5,657 SGD|Avg: $4,341 SGD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 3$3,046 SGD
Retailer 5$3,235 SGD
Retailer 6$3,292 SGD
Retailer 7$4,007 SGD
Retailer 2$4,221 SGD
Retailer 4$5,409 SGD
Helzberg Diamonds$5,657 SGD

12 data points across 7 retailers

8 retailers$3,046 SGD to $5,657 SGD

A
Cheapest Retailer
-
$3,046 SGD
A
Retailer 2
-
$3,235 SGD
View
A
Retailer 3
-
$3,276 SGD
View
A
Retailer 4
-
$3,292 SGD
View
B+
Retailer 5
-
$4,007 SGD
View
A
Retailer 6
-
$4,221 SGD
View
B+
Retailer 7
-
$5,409 SGD
View
Most Expensive
B+
Helzberg Diamonds
ZXZOJGMLJLHM · Nov 6
$5,657 SGD
$4,429 USD
View
7 more retailers have this diamond
Prices start from $3,046 SGDSave up to $2,611 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 Marquise
$3,046 SGD