How to Choose a Crystal Ball
First decide on what you need the crystal ball for – for meditation, for wearing, keeping with you in a pouch, for divination or for protection. That will determine the clarity of the crystal ball, and its size – from 40 mm to 100 over mm. Other than its decorative and ornamental values, crystal balls can be used for the following purposes:
Bigger natural quartz balls are generally more expensive, especially those that are clear with lesser flaws. By comparison, citrine crystal balls are more expensive than white crystal balls, and so are those made of smoky quartz or amethyst. Crystal balls are manmade; they are fashioned into spherical shapes from large slab of natural quartz. The wastage of natural quartz involved in the manufacturing process of the balls makes them more expensive.
Ask for the country of origin when you purchase the balls from the rock shops. Generally, the better quality white crystal balls come from Brazil , Uruguay, Argentina or United States (Arkansas) , or some European countries (Alps region), or Tibet of China (Himalaya).
I prefer crystal ball which is darker in shade, meaning it has more of the SO2 silicate dioxide. It is stronger in vibration than its clearer counterpart.
Some also prefer the ball to have some inclusions, for example some want the needle like formation of rutiles to be in the stone, giving it an extra zap in energy. Some come with layers of shade, (often in green color) which are call pyramid formations. Green color formation in quartz is also known as phantom. Genuine quartz balls have some natural inclusions; whereas those imitations are often exceptionally clear and unnaturally free from flaws. But, once you can feel the vibrations of natural quartz, you can tell the difference between a genuine and an imitation stone. If you know how to use your third eye to scan, the fake quartz will give you a blocked feeling on the chakra when you look it; the genuine one will give you a pleasant and lively vibration, especially stirring your Crown Chakra.
Ultimately, you have to use your gut feel, or intuition to choose your crystal ball. It is often said that if the stone is suitable for you, you will be drawn to it.