Crystals

In lieu of armor and weapons, the companion Shale has crystals The Warden may equip her with. Shale has 50 equipable crystals in the game that may be acquired from several sources: loot drops throughout the world (PC version only); items found in the Village of Honnleath, Wilhelm’s Cellar, and Cadash Thaig; they are also available for purchase from Gorim’s Gem Store in Orzammar Commons and Bella at the Redcliff Tavern (Each time you enter the Orzammar Commons or the Tavern, a semi-random, level-scaled set of six crystals will generate in Garin’s or Bella's store inventory), most merchants stock the Crystals as well, but with much less variety. Additionally, in the PC version of the game, there is a high possibility to find Crystals on dead Golems, in rubble, and in Cracked Stones

Crystals come in two sizes: large and small. Large crystals act as armor and appear on Shale’s shoulders and feet. Small crystals act as weapons and appear on Shale’s fists. Each crystal comes in one of five elemental types: fire (orange), ice (white), electrical (purple), natural (green), and spirit (blue). If you match a large and small crystal of the same elemental type on Shale, the golem receives a special item set bonus. There are also five degrees of crystal quality:
 * chipped (lowest quality)
 * flawed
 * clear
 * flawless
 * brilliant (highest quality)

Shale's crystals are some of the strongest equipment in the game; at Clear level of the small Spirit Crystal, Shale receives a high damage boost, +15% spirit damage, +2 to each of her attributes, and is capable of inflicting criticals of over 100 as early as level 8, if you upgrade her strength a great deal and add 2 points to cunning so that her critical chance becomes higher than dismal.

Places with fixed loot to acquire by taking, quest reward, lock pick or steal:

Korcari Wilds - Large Clear Fire Crystal - One of the locked chests.