It is still listed in the current lineup on the website, but it is also listed in the "Retired Balls" section.  Maybe the Cobalt is bumping it out.  Better act fast if you want one.

I was on the verge of getting another Solid Uranium to stockpile against the event of its being discontinued, but now I'm thinking of getting a second Enriched instead.  The Enriched is an absolute gem for my game.  It has just about moved into the top spot on my all-time favorite balls list.  The two it is bumping are the Timberwolf and the Bull Whip, so you can see I don't fork over that top spot lightly--or often.

Shiv
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Listening to the monotonous staccato of rain on my desk top

I see that today the Uranium Pearl is gone from the current lineup and now resides only in Retired Balls.  Lane #1 has not yet reposted the info they briefly had up on the site about the Cobalt.  

Shiv
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Listening to the monotonous staccato of rain on my desk top