Dinnerware
Dinnerware will inevitably deteriorate over time, dependent on use and quality. Higher quality items are likely to have been twice fired and therefore are less likely to show cutlery scratch marks.
However, to minimise damage to each piece:

Never drag pieces across each other or across surfaces
Stack dinnerware away from sharp surfaces in the dishwasher such as sharp knives
Handwash dinnerware pieces or wash on a low temperature wash with liquid detergent.
Do not expose pieces to dramatic changes of temperature
Be careful not to knock the pieces against another hard surface
Some fine dining pieces containing gold or silver decoration may not be suitable for the dishwasher. However, whilst it is always better to handwash your dinnerware, most products should be fine in a dishwasher. It is recommended that you wash your products at a relatively low temperature using a liquid detergent. (Look at the bottom of your piece for specific care instructions).
Do not put any piece with gold or silver decoration into the microwave; the reaction of the metals may cause sparks and / or deterioration of the decoration.
Most porcelain will stand heat up to 1900C for short periods of time, however, never put dinnerware directly from the fridge into the oven as the dramatic change in temperature may cause cracks.
Some earthenware and high absorption (porous) stoneware may not be oven safe. (Look at the bottom of your piece for specific care instructions).
Some products are sold as 'oven to table ware'; these pieces are specially made to withstand cooking temperatures and can be left in the oven for a longer period of time.
Stoneware is generally considered to be the most durable for every day use; however, all dinnerware should be relatively durable if treated correctly.
Bone china has long been considered the most refined of the dinnerware body types, followed by porcelain. However, these days porcelain is generally used for both formal and casual dining situations and bone china is less common.