(4) Mon Oct 04 2004 10:13 PST Pearls Of Great Size: In the Colossal Cave adventure you open a colossal oyster to reveal a colossal pearl. There's also a huge pearl in Steinbeck's The Black Pearl. If such a pearl did exist, would it really be that valuable? A marginally bigger chunk of gold is marginally more valuable because it's divisible, but pearls are used in their entirety for decoration. There must be a point beyond which marginally larger pearls stop being marginally more valuable. Clearly this happens well beyond the point where marginally larger pearls become marginally tackier.