According to this Serebii page you couldn't get one until Pokemon Diamond and Pearl.
http://www.serebii.net/itemdex/shinystone.shtml
in
toolmon obviously
Happiny evolves into Chansey with an Oval Stone.
Three pokemon evolve using the shiny stone now:Togetic evolves into TogekissRoselia evolves into RoseradeMinccino evolves into Cinccino2 Pokemon evolve from a shiny stone Togitic-TogekissRoselia-Roserade
dusk stone. and it evolves murkrow,too.
Chansey evolves from an Oval Stone.
Evee evolves by a stone.
Minccino evolves into Cinccino
A Fire Stone evolves Pansear into Simisear. A Water Stone evolves Panpour into Simipour A Leaf Stone evolves Pansage into Simisage. A Thunder Stone evolves Eelektrik into Eelektross. A Moon stone evolves Munna into Musharna. A Shiny Stone evolves Minccino into Cinccino. A Sun Stone evolves Petilil into Liligant and evolves Cottonee into Whimsicott. A Dusk Stone evolves Lampent into Chandelure.
Fire stone evolves Pansear into Simisear.
Moon Stone- Evolves Munna into Musharna Dusk Stone- Evolves Lampent into Chandelure Shiny Stone- Evolves Minccino into Cinccino Sun Stone- Evolves Cottonee into Whimsicott and Evolves Petilil into Lilligant Thunder Stone- Evolves Eelectrik into Eelektross Leaf Stone- Evolves Pansage into Simisage Fire Stone- Evolves Pansear into Simisear Water Stone- Evolves Panpour into Simipour
There is no cracked stone.