crystalline (adj.)

• clean-cut
• clear
• clear-cut
• coherent
• connected
• consistent
• craggy
• crisp
• defined
• definite
• diaphanous
• direct
• distinct
• explicit
• express
• filmy
• gauzy
• gossamer
• gravelly
• gritty
• limpid
• lucid
• luminous
• monolithic
• pebbly
• pellucid
• perspicuous
• plain
• porphyritic
• revealing
• rock-ribbed
• rocklike
• rocky
• sandy
• see-through
• sheer
• shingly
• simple
• stonelike
• stony
• straightforward
• thin
• translucent
• transparent
• unambiguous
• unclouded
• unconfused
• unequivocal
• univocal
• unmistakable
• well-defined