Who is to say one color or tint is better than others.. or one stone is better than another.. for they all are unique.. in sometimes subtle ways.. Its all how you look at it.. whether one stone is better quality than another..
God no doubt God sees each "stone" as unique.. and perfect for what they are.. Light refracting or reflecting or even EMITTING stones.. Different kinds of light(infra red, ultraviolet, or even microwaves) cause gemstones to react differently.. basically everyone is a preacher ugh errr.. light emitter..