The lumia (Citrus lumia Risso. & Poit.) is also called the pear lemon (Citrus × lumia 'pyriformis'), since its shape resembles a pear. The fruit resembles a pear in shape, has a thick peel and is not very juicy. Like a citron, it can grow to a formidable size.
The most known origin for the Lumia is from the Mediterranean basin.