![CR6637WRU](http://jkeithjewelry.com/cdn/shop/products/CR6637WRU__15854.1436564743.1280.1280_1200x_9bd09c6a-6a5a-4056-a39a-6220fe566b4a_{width}x.jpg?v=1565987552)
CR6637WRU
For most of recorded history, rubies have been the most valuable gems. Rubies are very rare: it's almost impossible to mine flawless rubies and many mined rubies are enhanced with heat and fracture filling to improve their appearance. Chatham's lab-grown rubies have a pigeon's blood color and exceptional clarity worthy of this gem's ancient name ratnaraj: King of Gems.
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