Amethyst: Princess of Gem World

Amethyst: Princess of Gemworld is the name of three comic book series published by DC Comics in the 1980s. They followed the adventures of a young girl named Amy Winston who discovers on her 13th birthday that she is in fact a princess and heir to the throne of a magical realm called Gemworld. Amy also learns that the parents that she has known are not her real parents; her real parents are dead, and a dark figure from Gemworld is out to destroy her

Volume One:

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Annual

Volume Two:

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09|10|11|12|13|14|15|16

Special

Volume 3

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Nextwave: Agents of H.A.T.E.

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07|08|09|10|11|12

05 Coloring book edition

Generation X

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31-35|36-40|41-45|46-50|51-55|

56-60|61-65|66-70|71-75

Annuals

Avengers Origins

Thor

Luke Cage

Vision

Quicksilver & Scarlet Witch

Ant Man & Wasp

Avengers - The Origin

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X-Men Origins

Emma Frost

Cyclops

Jean Grey

Iceman

Beast

Colossus

Nightcrawler

Gambit

Sabretooth

Wolverine

Deadpool

X-Men Origins

X-Men events from M-Day to Schism (Excluding AvX) 

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House of M - The Day After

New X-Men 20-46

Son of M:

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Generation M:

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X-Men: 198

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X-Men: 198 files

X-Men: Blinded by the Light (Messiah Complex prelude)

200//201//202//203//204

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07//08//09//10//11//12//

13

X-Force v3 + Messiah War

See X-23 masterpost  here

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08//09//10//11//12//13//14

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Regenesis

Astonishing X-Men

Joss Whedon's run on Astonishing X-Men. Also, I think it's a great starting point if you're looking to get into X-Men comics.

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Giant Size Astonishing X-Men