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Princess|Natural|IGI

1.21ct K SI1 Princess Natural Diamond

VG • K/SI1 • IGI 291787540

Shape and cutting style on the report: Princess cut

Certificate IGI 291787540

Diamond specifications and retailer prices

From $1,528 AUD
As of November 1, 2026
Save $1,851 AUD (55%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $3,379 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural princess diamond

This 1.21ct natural princess 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 291787540. Listed at 4 retailers as of November 1, 2026, with prices from $1,528 to $3,379, a $1,851 spread on the same certified stone. MOH London lists it at $3,379. 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
PolishVery Good
SymmetryGood
FluorescenceFaint
Crown angle30°
Pavilion angle39.7°
OriginNatural
Grading LabIGI
CertificateIGI 291787540
Dimensions6.15 × 6.11 × 4.10 mm
L/W Ratio1.01
Culet sizePointed
Top View
6.15 mm6.11 mm1.21 ctK / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateIGI 291787540
Side View
Table 73.5%Crown 30°Girdle: MediumPavilion 39.7°Culet: NoneDepth 67.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $3,379 AUD|Low: $1,528 AUD|High: $3,893 AUD|Avg: $2,590 AUD|-12.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4$1,528 AUD
Retailer 2$2,113 AUD
Retailer 3$2,391 AUD
MOH London$3,379 AUD

42 data points across 4 retailers

4 retailers$1,528 AUD to $3,379 AUD

B+
Cheapest Retailer
-
$1,528 AUD
B+
Retailer 2
-
$2,113 AUD
View
B+
Retailer 3
-
$2,391 AUD
View
Most Expensive
B
MOH London
B0AB83346 · Nov 4
$3,379 AUD
£1,828 GBP
View
3 more retailers have this diamond
Prices start from $1,528 AUDSave up to $1,851 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.

B+
1.21ct Princess
$1,528 AUD