Some law enforcement officials say that addicts may find the crystal form more desirable.

Only one crystal form of 1,3,5-trinitrobenzene has been known in the space group Pbca.

There have been cases of individual laboratories growing one crystal form.

They then grow a different crystal form, and are unable to make the first form again.

The next minute, a crystal forms, and all the molecules are locked in order.

X-ray pictures have revealed seven fundamental crystal forms, or systems.

Polymorphism is the ability of a solid to exist in more than one crystal form.

Mineral collectors are lucky to find it in good enough crystal form.

There are many substances that have different crystal forms, however.

What if they assembled different crystal forms, one over the other?