Star rose quartz cab

I work in jewelry and I am new in 3D modeling and blender.
I am trying to model a star rose quartz cab.
For the moment, the best I have is that result :
I have an effect of asterism when i model only the rutile needles but when i put my quartz on it, i loose a lot of the effect. I can see a lot the needle but not really the asterism .
If anyone have any idea.
Thanks by advance,

Your screenshots are pointing to your hard disk. Try uploading them to the forum where we can see them.