Sapphire. A variety of native corundum or aluminum sesquioxide. as the name of a gem the term is restricted to the transparent varieties of blue, pink, yellow, and other colors. The best specimens of the blue variety are nearly as valuable as the diamond. The sapphire is next to the diamond in hardness.

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“Hope in this life is a perishing thing, but the hope of good men, when it is cut off from this world, is but removed like a tree, transplanted from this nursery to the garden of the Lord.”
–Matthew Henry, Commentary, Job 19