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Title: Very nice coasters with only one flaw
Review: These are beautiful coasters with a great Celtic knotwork design. They do their job well, but they are only some sort of composite "plastic" type resin. There are others out there that are some sort of moisture-absorbing stone, but these particular ones don't absorb any kind of moisture. The moisture just ends up sitting on top of the coaster and settling into the nooks and crannies.
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