There are 4 Pyramids, three different materials. 
 
A: Mookite Pyramid - 1.5" tall x 1.5" wide: weight 100 grams (approximations)
 
C: Banded Onyx - 2" tall x 1.5" wide: weight 148 grams (approximations) (NOTE: Price lowered due to one edge having a small amount of material missing. 
 
Mookaite also known as Mooks Jasper is a rare crystal that is only found in Australia. Colors range from red, yellow, cream, pink and purples. The name is of Aboriginal origin meaning "running water". Moh is 6-7.
 
Mangano Calcite is a white or soft pink calcite found with white banding. This calcite reacts beautifully with UV exposure turning an orange-pink color. This is due to it Manganese content. It is found in Peru and China and has a hardness of 3
 
Banded Onyx is a type of Chalcedony and come in colored bands such as brown, red, orange, yellow, green, blue and purple. Onyx is found in Brazil, India, Madagascar, Mexico, Pakistan and the US. Mohs is 6.5-7. Normal Translucent to opaque.