What luck..2 questions,...1 answer...
The room that leads to the stairs has 3 exits and a solid wall. That wall is really an elevator. Look for a small depression, shaped like the crystal. Then click the USE/GIVE icon, click on use...etc.etc, and it will take you up to the tomb of F'lokis Ra.
Once you get up there, remember what Rethpian said about the secret chamber
above the tomb. The exit from that chamber, bypasses the broken stairs.
*Also note; you can run/jump up the stairs, but right now you need to go the other way, get the neckless from F'lokis and talk to Kerah's statue.