crystalclear

As an adjective tertiary is

(geology) of or pertaining to the first part of the cenozoic era when modern flora and mammals appeared.

As a proper noun tertiary is

(geology) the first part of the cenozoic era when modern flora and mammals appeared.

Crystalclear is likely misspelled.

Crystalclear has no English definition.

As a noun manus

is a hand, as the part of the fore limb below the forearm in a man, or the corresponding part in other vertebrates.