the name jasper means semi-precious stone
No. Sapphire is a precious stone.
An emerald is a precious stone.
Because it is not an extremely rare gem stone.
Ruby is a precious stone.
Yes, topaz is considered a semi-precious stone. It is a durable and relatively common gemstone that is used in jewelry.
Carnelian is a semi-precious gemstone
its not true... some semi-precious stone are more expensive than precious and even diamonds.
Lapis lazuli is a dark blue semi-precious stone from mines in Afghanistan
There are many ways to tell glass from semi precious stone beads. EHow has published an article on how to tell glass from semi precious stone beads, which describes how to inspect the sound, texture, bead, and cut of the specimen.
Sapphire and Opal.
Pumice is neither. It is not a gem stone nor a precious stone. It is often used to clean toilets and other objects.