Here are several reasons why gems will not hard to aquire
Skilling up your artisans will unlock unique recipes, granting your character access to benefits that may not be found anywhere else in the world. The blacksmith crafts weapons and armor, and can add sockets to some items. The mystic creates scrolls, potions, magical weapons, spell runes, and charms, and can also enchant items. The jeweler crafts gems , amulets, and rings. The jeweler can also remove gems from socketed items and can combine gems to improve their quality.
yup, that means you can pay the jeweler to create a gem, and it should be possible to create a gem above lvl5, depending on the jewelers level, making lvl14 gems a long term but not impossible goal