Sometimes similar in appearance to bermuda blue. The crystal is colored throughout like stained glass or a lovely gemstone. Any ordinary ruler will show you both inches and millimeters so you can become familiar with the sizes. Colors are listed as 38ab, 38vm, 38vl, etc. Crystal sizes can be deceiving.
Crystals are heavier, bulkier, and larger in ALL dimensions with each size increase.
Two or more crystals of the same type but different sizes can be extremely interesting together. But, colors can, indeed, enhance this splendor. You can easily mix and match clear and ab crystals. Gem color pieces allow the light to shine through them like stained glass. They add brilliant jewel colors to a collection.