Recognize the bead shapes and window lines that separate Pearls from Tears.
Bead shape & windows
Curio rowleyanus (String of Pearls): spherical beads with a fine translucent window line. Curio herreanus (String of Tears): elongated, pointed beads with a stronger window streak.
Handling & light
Both prefer bright-indirect light and excellent drainage; reduce handling to avoid bead drop and bruising.