Despite the intial "Wow!" factor when cats-eye marbles first flooded America in the 1950s, within 20 years the entire world of marbles had seemingly drowned in tidal waves of generic, green-tinted cats-eye marbles. If you saw one you saw them all, so naturally nobody really cared to play for keeps with them.
Undoubtedly, cats-eyes quickly became the slingshot ammunition of choice.
But here and there some nice varieties popped out of various foreign and domestic factories. Recently as I dug through the 54lbs of marbles that I purchased (more than half of which were cats-eyes), I found some real gems. And as I peered at these in the sunlight, I began to rediscover the beauty of cats-eye marbles.
Good cats-eyes have a strangely organic vitality to them, like ancient bugs trapped in amber; others look like leaves or exotic fungi. Some are like wispy butterflies trapped mid-flight in a dream, while others look like colorful blowing ribbons frozen in time. They don't all have names and this adds to the mystique.
So here is what I suggest: If you have a portion of the world's inexaustible supply of cats-eyes, take them outside on a nice day and start letting the sunlight guide you back into the real beauty of some of these marbles.