The reason for the post is to guage player base interest in adding them into the in game economy on a larger scale. I loved fainding them as loot, and thought they added great immersive feel when found in a chest of coin and jewelry.
Here is a photo of what I have and am looking to recreate in the three different sizes.

Three sizes in about a dozen different colores all with thier own coin value. I will leave the staff to assign value and a method for a PC to determine such based on game rarity and magical uses and such.
Here are a list of gem types and colors on my list of possible inclusions:
Diamond
>white
>black
Ruby
>red
Sapphire
>royal blue
Emerald
>medium green
Amethyst
>lavender
Aquamarine
>light blue
Moonstone
>milky white
Topaz
>yellow
Bloodstone
>red and orange swirled
Pearl (these will be round and not fasceted)
>wite
>black
Im thinking three or four different shapes for variety
round (like those pictured)
emerald (rectangular cut with beveled corners)
oval (like the Ford symbol)
pear (teardropish)
My question is...
would this enhance your game? If there isnt enough interest there is no point.