Siesta Key Beach % Quartz Crystal Sand From In5D
Dec 28, 2012#0183;#32;Even on days when the temperature is in the 90s F (30s C), the sand remains cool on your feet. One of the legends of why the sand is 99% quartz crystal is that its created from the constant tidal friction from the submerged underwater crystals of Atlantis out in the Gulf of Mexico and offshore from Siesta Key Beach.