How do I get SSR Magic Crystal Shard in 7DS Origin?

The SSR Magic Crystal Shard page lists all its sources in Seven Deadly Sins: Origin: dungeons, bosses, crafting, shops, events and rewards.

What is SSR Magic Crystal Shard used for?

SSR Magic Crystal Shard is used in crafting recipes, upgrades or exchanges detailed on its page.

「Corrupted」 Guardian Golem — Abyss	First Clear
「Corrupted」 Warden Orgot — Abyss	First Clear
「Corrupted」 Ancient Dragon — Abyss	First Clear
Galland of 「Truth」 — Abyss	First Clear
Ferzen Mines — Abyss	First Clear
Deep Spider Nest — Abyss	First Clear

Promise of Hope: Exchange Shop	503×
Bundles → Special$	In-app purchase
To the Top: Exchange Shop	503×
Exchange Shop → Loyalty	600

Guaranteed1×

Codex Reward #08

Guaranteed5×

Moonlight Across the Dawn — Exclusive Skin	10.6%1×
Sacred Treasure: Demon Sword Lostvayne — Exclusive Skin	10.6%1×
Sacred Treasure: Morning Star Aldan — Exclusive Skin	10.6%1×
Sacred Treasure: Sacred Axe Rhitta — Exclusive Skin	10.6%1×
The Fresh Scent of Autumn — Exclusive Skin	10.6%1×