Here is, possibly, the big red button for 'the moment'
Red Crystal Diamond Paperweight Award - Engraved Corporate Employee Recognition Awards
Or, this is a current eBay auction with a multiple buy it now, so I think posting it is safe. And it is half of the cost.
100mm 4'' Round Sapphire Glass Crystal Diamond Shaped Paperweight Ruby Red | eBay
The second one looks like a winner. 4" diameter seems just right. My coffee mug is 4" in diameter and when I set my hand over it, the edges hit my second knuckle and near the base of my palm similar to this: