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Marquise|Natural|IGI

1.21ct K SI1 Marquise Natural Diamond

VG • K/SI1 • IGI 770656547

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 770656547

Diamond specifications and retailer prices

From $2,011 USD
As of November 6, 2026
Save $2,324 USD (54%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $4,335 USD at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 770656547. Listed at 7 retailers as of November 5, 2026, with prices from $2,011 to $4,335, a $2,324 spread on the same certified stone. NZ Jewellers lists it at $4,335. 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
K
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle42.1°
Pavilion angle40.2°
OriginNatural
Grading LabIGI
CertificateIGI 770656547
Dimensions10.94 × 5.42 × 3.49 mm
L/W Ratio2.02
Girdle conditionFaceted
Culet sizePointed
Top View
10.94 mm5.42 mm1.21 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 770656547
Side View
Table 60.0%Crown 42.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 64.4%

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: $4,335 USD|Low: $1,841 USD|High: $4,905 USD|Avg: $2,779 USD|-3.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2$2,011 USD
Retailer 5$2,074 USD
Retailer 7$2,118 USD
Retailer 6$2,169 USD
Retailer 3$2,773 USD
Retailer 4$3,623 USD
NZ Jewellers$4,335 USD

46 data points across 7 retailers

7 retailers$2,011 USD to $4,335 USD

A
Cheapest Retailer
-
$2,011 USD
A
Retailer 2
-
$2,074 USD
View
A
Retailer 3
-
$2,118 USD
View
B+
Retailer 4
-
$2,169 USD
View
B+
Retailer 5
-
$2,773 USD
View
B
Retailer 6
-
$3,623 USD
View
Most Expensive
C
NZ Jewellers
f718b6e1-39f2-49a3-831f-8794aaae8d97 · Nov 5
$4,335 USD
View
6 more retailers have this diamond
Prices start from $2,011 USDSave up to $2,324 USD

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
$2,011 USD