two toned glass material

How would I go about creating this material?
So far my node editor looks like this:

I dont seem to get the nice purple colour coming through and the high shine isn’t coming through.
Any ideas?
Thank you

It seems your first attachment is missing, so we have no idea what you want to achieve.

Make your own glass shader. It’s only fresnel to shader mix between refraction and glossy shaders. That way you can probably more easier do whatever you’re trying to do to the glossy color. In the end, also shader mix between manual glass shader result and a white transparency shader using isShadowRay to handle shadow if caustics is turned off. Without attachments working, it’s hard to tell what you’re trying to do.