BOXES OF ROCKS: This weekend's draw at Festival Hall is the 28th annual International Gem and Jewelry Show -- featuring precious stones to buy or just view, from collections of celebrities like Liberace, John Lennon, Joan Rivers and Cary Grant.
The show includes what promoters describe as the "world's largest, privately held collection of jewelry once owned and worn by movie stars, television celebrities, kings and queens."
A wide range of precious and semiprecious stones, beads, crystal and jewelry will be featured. The show opens today, and continues tomorrow and Sunday. Admission: $5. Hours: noon to 7 p.m. today; 10 a.m. to 7 p.m. tomorrow; and 11 a.m. to 5 p.m. Sunday.
WHERE WE CAME FROM: Where Baltimoreans came from -- be it Europe, Africa or elsewhere -- is the subject of a presentation at the 1840 House on Museum Row, 800 E. Lombard St.
"Steps in Time: Scenes from 1840 Baltimore" is the name of this 40-minute performance in which 19th-century ethnic migrations to and from Baltimore will be brought to life.
Show times for this free event are 1:15 p.m. and 2:30 p.m. tomorrow.
"Steps in Time" is a collaboration of the Baltimore School for the Arts and Goucher College's Theater Department.
MUSICAL HISTORY: Musica Antiqua Performing Artists will present the sounds of historic Baltimore with songs and other expression from 1 p.m. to 3 p.m. tomorrow at the Top of the World Observation Level and Museum, 27th floor, 401 E. Pratt St.
The presentation, on a variety of period instruments, will include classical, folk, patriotic and ethnic music.
Tickets are $2 for adults and $1 for seniors and children ages 5 to 15. Information: 837-4515.
DOWNTOWN EMCEE: Find out if you have what it takes to become the next Letterman or Arsenio -- on a local level, of course. Who knows, the exposure may take your face farther.
Open auditions to pick a host of "The Downtown Baltimore Show" -- a series of promotions, both live and in various types of advertising -- will be conducted from 10 a.m. to 5 p.m. tomorrow and Sunday at the Light Street Pavilion at Harborplace.
If you're a poised, peppy, stand-up-for-Baltimore kind of person, give it a shot. Information: Amy Elias, 332-4433; or Brian Lewbart, 528-7719.