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Vivid colors are a trivial engineering problem, and one the Chinese have already cracked. Screenshot: https://ibb.co/s6gWTy1

Prices are dropping like a rock from a high tower, and colors and other options are becoming more available. Within 10 years you'll be able to buy virtually any diamond you like, in any common color, for less than a 2ct stone would have cost in 2014.

Also, if you really like huge gems, you can buy a moissanite today at 1000ct. Even on Amazon.com there are examples at 100ct. https://www.amazon.com/Gemonite-15CT-100CT-Moissanite-Colorl...

This would have been unthinkable 10 years ago. Things in the diamond and gemstone business are changing fast.