There are seven clues, with each clue pertaining to a specific gemstone. The first letter for each gemstone (in order) when aligned spells out another specific gemstone. So, a 7 letter gemstone. Answer with each gemstone per hint. Good luck.
Seven clues before you,
One answer you will find,
Only one solution
To which all seven bind.
If you seek a love eternal,
One must merely nock,
If you desire romance,
Name El Toro's favorite rock.
The namesake for the season
Had cupid carved into this ring,
Just click your heels together,
Your home makes your heart sing.
The favorite gem of Gaia's twin
Is filled with beauty most devine,
The next a great alternative
To ask, "Would you be mine?"
The final gem has several faces,
Many places you can sift
To find a stone to call your own,
Twice an anniversary gift.
Now put these rocks together
Into one amazing piece
Fit for queens in London dreams
A treasure to say the least!