Alright, here is a list for you to look at if you wish..I got this information out of a book i am reading...Sylvia Browne...Phenomenon ...It's a good book!
amber--targets the spleen chakra--calms nerves
amethyst--targets both the throat chakra and the brow chakra---enhances inner peace and spirituality, helps battle addictions
aquamarine--targets the heart chakra --enhances strength and a sense of control to fearful situations
citrine--targets the spleen chakra--detoxifies the body, cleanses the aura
diamond--targets the crown chakra--attracts love, harmony and abundance
emerald--targets the heart chakra--promotes general healing, deepens the significance of and the ability to remember dreams
garnet--targets the root chakra and the heart chakra--inspires imagination and balances energy
gold--targets the solar plexus chakra--purifies, heals, lends masculine energy
jade--targets the heart chakra--calming for the eyes, promotes longevity
lapis lazuli--targets the brow cchakra--stimulates the thyroid, increases general perception
malachite--targets the heart chakra--known as "the lucky money stone," also eases asthma
moonstone--targets the spleen chakra--known as the "lucky love stone," also promotes emotional balance
onyx--targets the root chakra--promotes healing during the grief process
peridot--targets the heart chakra-- stimulates emotional growth and new opportunities
quartz--targets any and all of the chakras--can be programmed for a variety purposes
ruby--targets the heart chakra--stimulates circulation, can also inadvetently create anger in others by disrupting their field of energy
sapphire--targets the throat and brow chakras--highly spiritual, also helps achieve goals
silver--targets any and all the chakras--great energy conductor, lends feminine energy
tanzanite--targets the brow chakra--stimulates spiritual insights
turquoise-- targets the throat chakra--beneficial to the upper respiratory system
Also wroth mentioning as a closing word of caution: There is a myth that opals bring bad luck. They don't. Nothing does, unless you believe it does. But opals do intensify both positive and negative emotions. So thet really are worth avoiding if you're going through grief, or if you're prone to chronic depression.