Associated with deep spirituality and devotion, sapphire is considered to bring peace and contentment to one's soul, as well as trust in the fulfillment of his or her destiny.
Because it evokes the energy of loyalty, honesty, and devotion, the sapphire is often used in the design of engagement rings. 
The most important attribute of the sapphire was said to be the protection against sorcery- it was thought to banish evil spirits and send negative spells back to the sender. Sapphires were once used to guarded off poisonous creatures and kill snakes hiding nearby.
They also provided advanced warning against hidden dangers. As a tool for self improvement, sapphires are a wonderful way to keep your life in check. They are said to have a powerful and transformative gemstone energy that may work quickly and drastically. They will help you connect to the universe, that is, they can open your internal and spiritual self to the powers of the universe.
They are also thought to increase communication with, connection to, and awareness of spirit guides, or angels. They activate and manifest one’s life purpose and focus and karmic agreements for soul growth. Psychologically, the sapphire helps maintain inner peace and are good for one’s mental state. They calm nerves and promote mental clarity, helping with focus and concentration. They have also been used as remedies for mental and nervous disorders.

Ruby stone stimulates the heart chakra in a way like no other gemstone. It helps you to set your basic value system and decide what is acceptable in your world and what is not. This is the pure value system that is unadulterated by the heart aches and chest pains the world dishes out at times.

The protective abilities of the Ruby stone may be why it was so often used in the breast plates and shields of Kings and Knights of old. In our modern times, it makes an excellent stone to wear as a shielding stone. Simply carry or wear a stone so you can easily get to it and when you feel the need for protection, grasp the stone and visualize a bright red light shining out from it and surrounding your entire being.
You can also pre-program a ruby stone as a shield so it can send out protective energies to surround you at all times. This is an especially good way to help prevent psychic attacks.
The instances of life that are the most troublesome to us, often happen for a specific reason, a life lesson needing to be learned or to bring us back into alignment with our true selves and the needs and desires we are able to fill in the world. 
Ruby stones can help you see the lessons you need to learn before the turmoil hits in our lives. Of course each instance is different but occasionally we can keep from having to deal with these events.
It is believed by some cultures that if you own a ruby stone, you will never lose your wealth and is often used in work to ensure the stability of your income.
To help improve your ability to enter a Lucid Dream State, wear or carry a ruby stone during your attempts. It helps you to remain lucid while entering the dream state and increases your ability to control the dream without slipping into a normal sleep pattern.

Peridot is a powerful cleanser.  It releases and neutralises toxins on all levels.  Alleviates jealousy, resentment, spite, bitterness, irritation, hatred and greed.  Reduces stress, anger and guilt.  Peridot opens our hearts to joy and new relationships.  It enhances confidence and assertion, motivating growth and change.  Sharpens and opens the mind to new levels of awareness.  Banishes lethargy, apathy and exhaustion.  Peridot enables you to take responsibility for your own life.
Peridot strengthens the immune system, metabolism and benefits the skin.  It aids disorders of the heart, thymus, lungs, gallbladder, spleen and intestinal tract. Treats ulcer and strengthens eyes.  Balances bipolar disorders and overcomes hypochondria.