It is usually found in massive rather than crystalline form.

The crystalline form of this chemical compound is dark green.

People over 50, for example, probably should consider taking vitamin B12 in crystalline form to ensure they're getting enough.

Sometimes the crystalline form is irregular and you cannot easily see the shape.

Once in the crystalline form, the material is strong enough to withstand bullets.

From the latter it can be separated in crystalline form.

So we can watch the conflict between these two rival elites play itself out in almost crystalline form.

The three enzymes were among the first to be isolated in crystalline form.

That aspirin might have a second crystalline form was suspected since the 1960s.

But diamonds are very hard and in crystalline form.