The real disruption will come in the form of widely available manufactured (not mined) diamonds.
I used to think of diamonds as basically worthless rocks, until I went shopping for an engagement ring stone and looked at them under the jeweler's microscope, and thought "I want to be dressed from head to toe in these things". With mass-produced diamonds, that may become a reality.
Yes, they're nice to look at, but unlike, say, emeralds, they're not very rare -- they're simply controlled by a monopoly supplier. Manufactured diamonds will bring back a competitive supply which would exist if there was a healthy assortment of companies in the diamond mining industry today.
I used to think of diamonds as basically worthless rocks, until I went shopping for an engagement ring stone and looked at them under the jeweler's microscope, and thought "I want to be dressed from head to toe in these things". With mass-produced diamonds, that may become a reality.