well to make it more complicated yes and no - the main body would be black resin using filler to bring the cost down. With a final pour of clear resin only 2mm thick to finish the look of the table and to enable you to see the objects embedded in the resin. So a resin sandwich sort off.  Un-like the picture the objects would be across the full size of the table - so would need to use a complete block of resin - so I cant just pour the middle section. Yes it will be expensive as will use a lot of resin per table. 

So it"s not a transparant tabletop? or am I missing something? 

I had considered a clear casting-resin the type used in casting jewellery and the type you see used on clear toilet seats - but had the impression that using such a large surface area and being up to 4cm thick would mean that this product would not be suitable - levelling bubbles/temperature control / number of pours required / the surface remaining tacky and also not being tough enough as a coffee table would suffer from marks too readily. I may be wrong but felt that Polyurethane Casting Resin would be better suited to the job; as I decided the table top needed to be black resin with some embedded objects - also I believe it can be more readily finished - sanded polished etc, so eliminating any issues in casting - I am I correct?

you'd certenly need a release agent.

Need to use a release agent on the table as it will bond otherwise

Hi