There are a lot of pretty pictures on the Jewellery Theatre website, but a sad lack of actual information.
This charming bracelet, dubbed the Caravaggio, is made with coloured diamonds and variously coloured sapphires, and tsavorites. You can find the stone weight here. You won’t find the karat fineness or price, alas. Jewellery Theatre was founded in Russia and has several European boutiques. I’m presuming they would be familiar with the missing details.