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Marquise|Natural|IGI

1.21ct H SI1 Marquise Natural Diamond

VG • H/SI1 • IGI 817688907

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 817688907

Diamond specifications and retailer prices

From $3,415 SGD
As of November 1, 2026
13 retailers carry this diamond
Most expensive: $7,414 SGD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 817688907. Listed at 13 retailers as of November 1, 2026. 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
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle37.2°
OriginNatural
Grading LabIGI
CertificateIGI 817688907
Dimensions10.72 × 5.50 × 3.27 mm
L/W Ratio1.95
Girdle conditionFaceted
Top View
10.72 mm5.50 mm1.21 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 817688907
Side View
Table 63.0%Crown 37°Girdle: STK-THKPavilion 37.2°Culet: NoneDepth 59.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $3,415 SGD|Low: $3,415 SGD|High: $7,201 SGD|Avg: $4,548 SGD|-11.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 18, 2026
Retailer 1$3,415 SGD
Retailer 3$3,778 SGD
Retailer 8$3,881 SGD
Retailer 10$4,072 SGD
Retailer 9$4,114 SGD
Retailer 11$4,256 SGD
Retailer 2$4,439 SGD
Retailer 4$4,480 SGD
Retailer 6$4,961 SGD
Retailer 7$5,167 SGD
Retailer 5$7,192 SGD

23 data points across 11 retailers

13 retailers

A
Cheapest Retailer
-
$3,415 SGD
Retailer 2
-
$3,778 SGD
View
Price last confirmed 23 days ago
Retailer 3
-
$4,072 SGD
View
Price last confirmed 24 days ago
Retailer 4
-
$4,256 SGD
View
Price last confirmed 30 days ago
Retailer 5
-
$4,256 SGD
View
Price last confirmed 26 days ago
Retailer 6
-
$4,419 SGD
View
Price last confirmed 37 days ago
Retailer 7
-
$4,439 SGD
View
Price last confirmed 24 days ago
Retailer 8
-
$4,480 SGD
View
Price last confirmed 23 days ago
Retailer 9
-
$4,910 SGD
View
Price last confirmed 29 days ago
Retailer 10
-
$4,910 SGD
View
Price last confirmed 62 days ago
Retailer 11
-
$5,167 SGD
View
Price last confirmed 26 days ago
Retailer 12
-
$7,192 SGD
View
Price last confirmed 23 days ago
Most Expensive
NZ Jewellers
250d0520-c188-4d1e-8dd6-2e9d6ce74937 · Sep 30
$7,414 SGD
$5,785 USD
View
Price last confirmed 37 days ago
12 more retailers have this diamond
Prices start from $3,415 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
$3,415 SGD