The largest faceted golden beryl is 2,054 carats. It is common practice to disguise these flaws and enhance the color. Although not particularly hard, nephrite and jadeite are tougher than steel. Consequently they have been used for weapons and tools and the most delicate carvings. The gemstone jade comes in many colors, white, cream, black, pink and the most common and familiar, green.
Appearance is transparent to opaque light to medium yellow to yellowish green.
Light blue color is rare. The RUBY , the most valuable of all gemstones, is a variety of corundum. Consequently it will take a brilliant and lasting polish that adds a glittering luster to its colors. Discovered in 1967, it is a supremely rare, coming from only one place in the world, the Merelani Hills in Tanzania. A variety of the mineral zoisite, the source of its mesmerizing color is trichoric.