Pear cut stone size: 8mm x 6mm.
Baguette cut stone size: 7mm x 5mm.
Oval cut stone size: 7mm x 5mm.
Round cut stone size: 5mm.
Hoop outside diameter: 25 mm.
Hoop thickness: 5 mm.

By far the easiest and safest way to clean your jewellery is with warm water and  detergent-free soap

Then, run it under some clean water and dry the piece carefully with a jewelry cloth. 

And that’s it. Just leave the last remaining moisture to air dry, and you’ll see a marked difference in your gold jewellery. You can clean it like this as often as you like, but if you do it after every few wears you’ll maintain its good looks for longer.