Serpentine gets its name from the word 'serpent' because it resembles the skin of a snake. It is sometimes called New Jade and occurs in a variety of colors including red, green, brown-red, brown-yellow and white. It has been used since ancient times to guard against disease and sorcery.

Serpentine makes an exceptional meditation stone. It helps you to find inner peace. Serpentine was carried in ancient Assyria to request the gods and goddesses to provide double blessings. Nursing women used it to regulate their milk supply.

Protection against poisonous creatures such as snakes, insects, etc.
Balances mood swings
Encourages the ability to solve conflicts by peaceful means
Healing properties of Serpentine.
Serpentine can be placed directly on the skin. It is an aid to kidney and stomach complaints, relaxes cramps and menstrual pain and helps women who are unable to reach orgasm due to tension.
Serpentine activates kundalini energy and moving forward from the past with strength and confidence. Said to help you to feel more in control of your life and to help correct emotional and mental imbalances and promotes inner peace.

The name of the stone gives you a clue to what one of its most potent effects is. This green stone is said to be one of the safest stones to aid you... if you want to activate the Kundalini.

The kundalini energy... or Serpent Power... is purported to reside at the base of the spine... wrapped three and a half times around the sacrum... until roused. As part of the process to raise your kundalini energy... Serpentine Stone is known to be an extremely potent and effective stone to use.

If you awaken your kundalini, you may experience a wide range of different effects. The intensity of this experience often stimulates sexual feelings as it opens new areas to create 'enlightenment'. The energy of the kundalini moves up the spine... from the base chakra until it emerges at the crown chakra.

Many people have reported extraordinary experiences when this happens and it may feels very much like a hot flame as it makes its way up. Before attempting to do this... it is wise to read all the information available on the process... as there may be side effects if you force the process to happen when you are not really ready for its effects

If you do intend to use it for kundalini activation... it is good idea to begin by wearing it so that you can adjust to its unique energy gradually... before using it in a body layout.

Amethyst is a meditative and calming stone which works in the emotional, spiritual, and physical planes to provide calm, balance, patience, and peace.

Amethyst is used as beneficial when dealing with legal problems and money issues, which can lead to prosperity and abundance, though it is not the best known prosperity stone.

In the psychic and spiritual realms, amethyst is an excellent all-purpose stone that can increase spirituality and enhance intuition and psychic powers of all kinds. It does this by making a clear connection between the earth plane and other planes and worlds. Amethyst is also excellent for meditation and lucid dreaming. It is used to open one's channels to telepathy, past life regression, clairaudience, clairvoyance, and communication with angels. Amethyst also protects against psychic attacks, especially during spiritual work.

Amethyst is not only a psychic protection stone, but is also used to protect one from thieves, and to protects travelers. 

Emotionally, amethyst is used in crystal healing  to help heal personal losses and grief, bringing one gently past. Amethyst has a gently sedative energy that can promote peacefulness, happiness, and contentment. It also is said to bring emotional stability and inner strength. This stability and strength not only helps one hold firm in one's life, but it can enhance flexibility and cooperation. To be flexible at need is a sure sign of strength.

Amethyst is very well known -- as from the ancients -- as a sobriety stone. It has been used for millenia to prevent drunkenness, and is used to assist in getting rid of addictions to alcohol, drugs, smoking, etc, and destructive compulsive behaviors of all kinds.