It is like making much of a rainbow that has disappeared.

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Its "rainbow run", like the Olympics' torch relay, carries a rainbow flag through many of the games' participating cities.

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But this looks suspiciously like a crock of gold at the end of some global rainbow.

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"When it looks like the sun isn't going to shine anymore, God put a rainbow in the clouds, " sung the 74-year-old, hosted onto the stage by Rastafarian poet Benjamin Zephaniah.

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She uses a rainbow of precious and semiprecious stones, cutting the latter into droplet-like briolettes (a cut traditionally reserved for diamonds) to intensify their sparkle.

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Then we'll close things out with an interview from none other than LeVar Burton, who tells us about the rebirth of Reading Rainbow and how Project Glass and the iPad are making the real world a little bit more like Star Trek.

ENGADGET: The Engadget Show 34: LeVar Burton, weather balloons over Alaska, Northeastern University and ITP