What does it mean when a music album goes double platinum?

Question

This is with regards to Greek music artists and their albums.

Answer 1

Standards have changed many times, especially with the transition from the vinyl to cds in the 90's and the piracy wave in the '00s:
http://www.myphone.gr/forum/showthread.php?p=1612924
http://www.lyra.gr/ViewArtist.aspx?TableId=101&ValueId=26044
(I suppose that a double platinum is twice the sales of a platinum.
till Dec 1996, platinum> 60.000
from Jan 1997, platinum> 50.000.
from Nov 2001, platinum> 40.000.
for CD-singles the limit was 20.000 copies.
from 2004, a dvd goes platinum for more than 10.000 sold copies.
Blame it on the companies, if not on anyone else.)

Answer 2

theres 6.5 billion human beings in the international hip hop is a international sensation final 3 carter albums equals 13 million final 4 eminem albums = 60 million international album sales isn't the only standards for being a good rapper rapping approximately real existence subject concerns anthoer standards which lil wayne has did no longer do in any of his albums !!

Answer 3

they get the platinum for selling and certain amount of albums (it's different for different countries, 20 000 albums in Romania for example), twice mean they've sold twice that amount.

Answer 4

2 million copies sold

Answer 5

sell 2 million copies.