Brownies - Gems or Precious Metals

[keyboardix]

The clue is "Look inside to find London river & knot" (8 letters)" Can anyone help or advise me what gem or precious metal answers the clue ?

[clairerob21]

platinum

[clairerob21]

sorry wrong one amethyst

[Quizmonkey]

Explain?

[keyboardix]

Thank you for replying clairerob21, but, like Quizmaster, I do not see how you arrive at your suggested answer of "amethyst". Your further remarks will be welcomed.

[keyboardix]

For Quizmaster, please read Quizmonkey, above.

[cathfromsaron]

http://www.gemselect....nfo/gemstone-list.php

maybe peruse the above for ideas?

[Red-berry]

Mix up the letters to get thames, that leaves ty - eg knot (tie it up)

[keyboardix]

Sorry to have doubted you and queried you, clairerob21, but the "penny has dropped", with the further help of cathfromsaron and red-berry.I thank you all.