because the minerals have a lot of names.
What are the names of the six main kinds of crystal shapes
A calcite crystal comes in a variety of sizes and shapes. There are some that do look like a diamond to the naked idea but you can tell that they are different if you look closely.
You question does not make sense - what do you mean by 'data of crystal' ?
Amethyst is a variety of crystal quartz.
crystallographic structure
yes. each minerals atoms are arranged in a very specific order.
Deals on a variety of crystal decanters can be found at Bowring, eBay, Macys, Crystal Classics, Ravenscroft Crystal, Bed Bath and Beyond and Crystalize.
Now called Swarovski Elements, Swarovski's crystal beads come in more than 200 shapes. These range from simple pearl beads to elaborate key, fish, heart and coral shapes.
As DreamTowne Jewelry mentioned, there are a huge variety to choose from. The most common one is quartz, which is a very clear looking crystal that you can see in the picture. It is the second most abundant crystal there is, which is also a partial reason why it is so commonly used.
Crystals are made from molten magma that cools causing silicate minerals to crystallize. The different crystal shapes form differently as the magma cools at different rates.
Spacecraft, spherical, crystal, and cylinder , and these are the 4 basic shapes of virus
It indicates that it is a metallic luster