Gemstone value of the stone. Some treatments are used widely because the resulting gem is stable, while others are not accepted most commonly because the gem color is unstable and may revert to the original tone. Heat can improve gemstone color or clarity. The heating process has been well known to gem miners and cutters for centuries, and in many stone types heating is a common practice. Most citrine is made by heating amethyst, and partial heating with a strong gradient results in “ametrine” – a stone partly amethyst and partly citrine. Aquamarine is often heated to remove yellow tones, or
Gemstone Warrior return with the Gemstone. There are three difficulty levels, determining various factors such as the rate at which magic items change their effects and the rate at which more dangerous monsters start appearing. This was the first game to have 4-directional scrolling. The general game design and concept was later used in the Diablo (series). The game is viewed in a 2D screen displaying the playing area, health, and inventory. The player controls an armored figure that wields a crossbow with a limited supply of bolts that can be replenished by finding more within the dungeon areas. Special "fireballs" can