Shut up and take my money, @sableglass.
Get a load of this gorgeousness.
This is an example of the "Reticello marble handmade glass art," according to the maker.
It's an Italian decorative glassblowing technique that involves merging two bubbles (one inside the other), in which the straight canes were twisted in opposite directions.
Once merged, those two opposingly twisted canes cross over one another and creates that pattern that looks like a net.
When done in the traditional fashion, small air bubbles become trapped in a grid pattern between the crossing molten glass canes.