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Jewel is pronounced joo-uhl. Jewelry is pronounced JOO-uhl-ree, not JOOL-ree as in drool-ry. The second syllable is very brief, though.

http://dictionary.reference.com/browse/jewelry
http://www.merriam-webster.com/dictionary/jewelry

And if sounding intelligent is the desired ends of your advice then perhaps omitting the use of "supposed to" and "used to" would be more appropriate since neither is best practice in grammar.