Look for natural zoning and gentle variations in purple. Edges and terminations should feel crisp on points; tumbled stones feel smooth but not plasticky.

Minor inclusions or internal features are normal and often desirable.

Common imitations include dyed glass or quartz tinted to uniform purple. Very even, bubble-filled pieces may indicate glass.

Be cautious with perfectly identical beads or suspiciously low prices for deep color.

Room‑light checks: observe color zoning near tips and base. Loupe checks: look for natural inclusions rather than round gas bubbles.

Avoid destructive tests; when unsure, buy from trusted sellers.

Clean gently with a soft cloth. Avoid strong heat or prolonged sun exposure which may lighten color. Store to prevent scratches.