Hi Ladybug,
Here's what I got from a wt: SUNSTONE GARNET, TOPAZ, and RUBY.
Mybe you can try again. -- with this additional info from the wt - 'Use the yellow stone on our amulet after you've gotten your rubies'. Maybe this is the key to get you through the hump.
Here's from another wt:
SPOILER:
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POSSIBLE GEMS: Opal, Onyx, Diamond, Ruby, Topaz, Garnet, Peridot, Aquamarine, Sapphire, Garnet, Pearl, or Amethyst. They may not all be available at onetime. The Emerald is not available yet, nor can it be torn from the statue
where it is present.
Once you collect all the stones, SAVE. Go to the marble altar (down and left from Darm's Shop), and save again. Have all your stones handy. Start with the sunstone. If a gem twinkles when placed on a plate, it is the correct stone, and you should save. If it burns, as in a flame is shown, load from your last save at the altar, as you might need that stone. I have found that, most often, the ruby is the last stone, while I have seen no pattern among the center two. When you finally get the right combination, you will receive the magic flute.
MaG