Your search for "Violet Crystal LOB-EN042" revealed the following:
Violet Crystal - LOB-EN042 - Common - 25th Anniversary Edition Unlimited
Legend of Blue Eyes White Dragon (25th Anniversary Edition)
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Violet Crystal - LOB-EN042 - Common - 25th Anniversary Edition Unlimited from Legend of Blue Eyes White Dragon (25th Anniversary Edition), available at 401 Games Canada. Rarity: Common Card Text:(This card is not treated as a "Crystal" card.)Equip only to...
Violet Crystal - LOB-042 - Common - 1st Edition from Legend of Blue Eyes White Dragon 1st Edition, available at 401 Games Canada. Rarity: Common Card Text:A Zombie-Type monster equipped with this card increases its ATK and DEF by 300...
Violet Crystal - LOB-042 - Common - Unlimited from Legend of Blue Eyes White Dragon Unlimited, available at 401 Games Canada. Rarity: Common Card Text:A Zombie-Type monster equipped with this card increases its ATK and DEF by 300 points.