lu·mi·nar·i·a      (esp. in Mexico and the southwestern U.S.) a
Christmas lantern consisting of a lighted candle set in sand
inside a paper bag.  
Origin: 1945–50; < MexSp, Sp: any lamp or lantern displayed
during a festival.

"luminaria." Dictionary.com Unabridged (v 1.1). Random
House, Inc. 23 Nov. 2007. <Dictionary.com http://dictionary.
reference.com/browse/luminaria>.
Lu·mi·naire     a lighting unit consisting of one or more electric
lamps with all of the necessary parts and wiring.  

"luminaire." Dictionary.com Unabridged (v 1.1). Random
House, Inc. 23 Nov. 2007. <Dictionary.com
http://dictionary.reference.com/browse/luminaire>.
Small (7"-9")

Medium (9"-12")
Large (over 12")
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