Violet Gem Necklace : MM17
It seems you pressed the correct button.
The alphabet is matched with numbers starting from A.
A equals 1, B equals 2, all the way to Z equals 26.
You count backward through the letters in the word
by the number of the alphabet with the smallest value in
that word.
On the first cycle, you use number 1, and on the second cycle, you add number 2.
For “like,” the smallest alphabet number is E.
When you count five letters backward in “like,” you land on E in the second cycle.
Therefore, the answer is E2.
In the same way, for “share,” the alphabet with the smallest value is A,
and that number is 1.
When you count one letter backward in “share,” you get E in the first cycle.
Therefore, the answer is E1.
Using the same logic, for “comment,” the smallest letter is C.
When you count three letters backward, you land on E in the first cycle.
Therefore, the answer is E1, and the correct button to press is E.
You press the E button beneath the frame.
Soon, a part of the wall beneath the buttons opens,
and the Violet Necklace treasure is revealed.
You take the treasure from the small space inside the opened section of the wall
and secure it.
After obtaining the treasure, you leave the area.
You make your way out.
You successfully secure the treasure.
Congratulations!