If you could have one stone, what would it be?

[arglthesheep]

For me it would be a very big > 5 ct merelani mint or hot greensparkling emerald...

 

[jordyonbass]

A genuine green/red Alex or an N1/B5 Lightning Ridge opal with blue and red. I know my chances of having the latter is far greater than the unicorn that is the former

 

[normanintheskywithsapphires]

A perfect unheated padparadscha, 5 carat, round, precision cut, utterly perfect and not the intense color type but the more bright orange-pink.

Less intense that this: https://www.cushiongem.com/456-oval-srilankan-unheated-padparadscha-sapphire-feature

More like this: http://www.wildfishgems.com/inc/sdetail/unheated_ceylon_padparadscha_1_63/20172/16646

with this the shiny brightness but in round and 5 times bigger.

 

[T L]

The Dresden Green.

 

[Vesper]

A genuine green/red Alex or an N1/B5 Lightning Ridge opal with blue and red. I know my chances of having the latter is far greater than the unicorn that is the former

Yes! I have a small N1/B4 Lightning Ridge opal that flashes red and green. I want an N1/B5 red and green huge opal. One day. I am sure I am more likely to get a unicorn. You can pet mine from time to time.

 

[distracts]

If I could ONLY have one stone it'd be my engagement ring sapphire because it's still my favorite.

If I could have any stone I don't already have, I think maybe a 2+ ct tsavorite for a ring. Or a 2+ ct Russian demantoid? One can dream. (The former is within my reach if I find the right one - the latter, not so much. lol.)