The Collaborative International Dictionary of English v.0.48:

Begem \Be*gem"\, v. t. [imp. & p. p. Begemmed; p. pr. & vb. n.
   Begemming.]
   To adorn with gems, or as with gems.
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         Begemmed with dewdrops.                  --Sir W.
                                                  Scott.
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         Those lonely realms bright garden isles begem.
                                                  --Shelley.
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