19 Carat Kyanite (Princess, 14.41×14.41mm, Blue)

Color:

blue

actual size

Actual size is set for screen

How big is a 19 carat princess-cut Kyanite?

It depends on the cut parameters, but a typical size of a 19ct princess-cut Kyanite would be around 14.41×14.41 mm (±6%). You can check how big it looks on a ring and finger below.

Ring:

Gold
Platinum

Skin tone:

Pale
Light
Medium
Dark

Ring width: 3.0 mm

Saved...

64 mm

Your settings
Ring	Gold
Skin tone	Light
Ring diameter	16.9 mm
Ring width	3.0 mm
Finger length	64 mm
Finger coverage	86 %

Saved...

Ring diameter: 16.9 mm

USA	UK	Asia	EU1	EU2

Additional Info

Kyanite got its name from the Greek word "kyanos", which simply means "blue". Gems with intense sapphire blue color are the most valuable. One peculiarity about Kyanite is that depending on crystallographic direction, it has two different hardnesses (7 and 4.5).

Where to buy?

For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile

Gem Details

Name:	Kyanite
Shape:	Princess
Chemical Formula:	Al₂SiO₅
Crystal Structure:	Triclinic
Hardness:	4.5-7
Specific Gravity	3.68
Carat weight:	19 ct
Gram weight:	3.8 g (0.134 ounces)
Points:	1900 pts
Length:	14.41 mm
Width:	14.41 mm
Est. face-up size:	207.65 mm²
Volume:	1032.61 mm³
Length-to-width ratio:	1
Refractive Index:	1.710 - 1.735
Luster:	Vitreous,Pearly
Wearability:	Very good
Care Instructions:	Should be treated gently
Color:	Kyanite can be found in the following colors:
Birthstone:	Kyanite is not an official birthstone of any month

Popular comparisons:

About Kyanite Specific Gravity

Kyanite has a specific gravity of approximately 3.55 - 3.70, with 3.68 being a generally accepted standard average for gem-quality material.

For all the Kyanite size calculations on this website, the specific gravity of 3.68 is used.

To learn more about it and why it matters, and to compare densities of all the gemstones on one page, click here.

Ring & Finger Simulator

Use the simulator on this page to play around with different ring and finger configurations.

To select a different gemstone, shape, color or size, or to compare two gems side-by-side, use the form at the top of the page. Comparison example: 19ct Kyanite vs Sapphire (Princess Cut)

If you want to compare princess-cut Kyanite sizes from 0.25 to 40ct on one page, see Princess Cut Kyanite Size Chart

In order to view real-world sizes on your screen, ensure that the actual size is set to your device screen size (diagonal in inches).