Shadow Sapphire is a blackened blue shimmer nail polish, and is opaque in approximately two coats.  On its own, it dries to a satiny finish, not truly matte, but not glossy. 

Rather than offering sets, purchasing three or more bottles of polish from the Shadow Gem collection in a single order will give a discount of 3.5% on all Shadow Gem collection polishes in the order, which will be reflected in the cart under the line "Shadow Gem collection discount."

The last photo shows what Starlight Polish 15mL and 7.5mL bottles look like.