Today we call this stone Chrysoprase and is commonly found in apple green. Back in the time that Revelation was written, the golden and yellowish-green stones were more common. This stone is said to bring love and prosperity. You should use Chrysoprase if you wish to better accept yourself and others. I believe this stone is included in the foundation, because Chrysoprase is said to help us understand the Divine Truth. We may already know the truth of Yeshua, but we could definitely use some help in finding all the truths that we should know. For physical healing, this stone can help with high blood pressure, eye problems, depression, and insomnia.