Colours and markings vary between crystals. You are purchasing the Spectrolite crystal free form from Madagascar, pictured.
About Spectrolite Crystal Free Form (Madagascar)
Spectrolite is a very rare variety of Labradorite which displays a full spectrum of rainbow colors. Spectrolite is considered to be the gem quality variety of Labradorite.
Originally Spectrolite was only available from Finland however there has now been a new discovery in Madagascar and it has been confirmed by a geologist that this is Spectrolite.