Need suggestion for Hdri for diamond and metal like which hdri should i use to achieve this type of rendering specially for diamond
Don't want to offend no one here but that diamond rather looks like a Photoshop hackjob than a render. Google Diamond caustics texture in images and you will get the exact same effect.
I would have to agree. It looks rather fake.
Welcome to the KeyShot forum. If you're looking to get that reflection in the diamond/metal, try some of the different studios in KeyShot. To me it looks like a light studio with a ring light or round reflector/dish.