Light Options for Sapphire and Ruby Stars

We display huge quantity of Sapphire and Ruby stars at the shows,
but the problem we face is the lack of stars or multiple stars
appears on the stones because of the light. What light bulb would any
one suggest to get good stars displayed on the stones?

Anil

We display huge quantity of Sapphire and Ruby stars at the shows,
but the problem we face is the lack of stars or multiple stars
appears on the stones because of the light.

Star stones show the best with a single source of light. You need to
have a small halogen desk type lamp on top of your display case where
you can put one stone under it so there is only one direct source of
light for that stone.

Richard Hart