Really fun colors of alluvial Topaz coming from a new find in Colombia - These are 100% natural. 

Alluvial shapes of topaz are formed by the action of water, and they are typically rounded and smooth. These shapes are ideal for cutting into gems because they have few inclusions and are free of fractures. When cut properly, topaz can exhibit a high level of brilliance and fire

Please note that it's likely some of the yellow/golden/tan color is coming from iron staining that is present on the surface. Those colors could end up faceting clear

5 pieces / 102.30 total grams / 511.5 total carats / 102+ average carats / clean