CaratHunter
Plans
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 $2,927 AUD
As of November 6, 2026
Save $3,382 AUD (54%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $6,309 AUD 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 $2,927 to $6,309, a $3,382 spread on the same certified stone. NZ Jewellers lists it at $6,309. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,309 AUD|Low: $2,679 AUD|High: $7,139 AUD|Avg: $4,048 AUD|-3.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2$2,927 AUD
Retailer 5$3,018 AUD
Retailer 7$3,083 AUD
Retailer 6$3,157 AUD
Retailer 3$4,036 AUD
Retailer 4$5,273 AUD
NZ Jewellers$6,309 AUD

45 data points across 7 retailers

7 retailers$2,927 AUD to $6,309 AUD

A
Cheapest Retailer
-
$2,927 AUD
A
Retailer 2
-
$3,018 AUD
View
A
Retailer 3
-
$3,083 AUD
View
B+
Retailer 4
-
$3,157 AUD
View
B+
Retailer 5
-
$4,036 AUD
View
B
Retailer 6
-
$5,273 AUD
View
Most Expensive
C
NZ Jewellers
f718b6e1-39f2-49a3-831f-8794aaae8d97 · Nov 5
$6,309 AUD
$4,335 USD
View
6 more retailers have this diamond
Prices start from $2,927 AUDSave up to $3,382 AUD

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
$2,927 AUD