1. You will earn legendary gem's level 60*1
2. You need to provide your account.
3. Free Paragon Level upgrade.
4. ETA 1-2 Business Days.

You can Contact live-support to customize more advanced legendary gems if you need.
Ancient legendary armor will be strengthened by using Ilvl50+ legendary gems through Kanai's Cube in Patch2.4.
Ancient legendary jewelry will be strengthened by using Ilvl40+ legendary gems through Kanai's Cube in Patch2.4.
Ancient legendary weapons will be strengthened by using Ilvl30+ legendary gems through Kanai's Cube in Patch2.4.