If you believe in gemstones healing properties, you'll find Diamond's spiritual properties stimulates your inner intuition and enhances creativity and imagination.  It opens the mind to  the "new" and "possible." 

Different impurities found in the gemstone will dictate the change in the shade of a diamond.  

Diamonds were extraordinarily well marketed to create their scarce appeal; however, they are not as rare as we once thought them to be.  In the 1800s, a wealth of diamonds were discovered in Kimberly, South Africa.  Had DeBeers not quickly intervened by taking control of the mine the market would have been flooded with diamonds and thus significantly bringing down their cost.   We place a lot of value into the Diamond, and while yes, they are stunningly beautiful, I try to find alternate ways to add a diamond element to my jewelry designs.   I hammer textures into the metal that, when shiny, reflect light as if tiny little diamonds embedded into the silver.