Promotional 10cm Optical Crystal Sphere with a Flat Base Brighten up your workspace with the 10cm Optical Crystal Sphere. It is the perfect gift or reward to compliment any desk. With a flat base the Sphere would take pride of place whether at home or in the office. With the option to add sandblast engraving this paperweight can be personalised. Crafted from optical crystal it has perfect clarity and is guaranteed to be a treasured keepsake. This piece is also availble in two other sizes and is supplied in its very own presentation box for that extra special touch.