Is the word "Jewellery" mispelled on purpose? 

Just discovered that both spellings are acceptable... sorry. Never seen "jewellery" before.

Jewellery is spelled "jewelry" only in the US. Jewellery is the spelling used elsewhere (UK, Canada, etc). It makes it confusing I know. I also own the www.rocketjewelry.com domain which links to the same website. Because of this, I would prefer to just use the word "rocket" for the logo and packaging. My business name is rocket designs, but the www.rocketdesigns.com domain was too pricey so I opted to buy both www.rocketjewellery.com and www.rocketjewelry.com. 

Nice designs :)