โดย: เจ้าของร้าน เมื่อ:8 ปีที่ผ่านมา
Posted on Jul 1, 2016 in Featured, Ruby Before we go searching for the July birthstone, here’s a little scientific background on the gem: ruby belongs to the mineral species corundum. The red color, which defines the variety called ruby, owes its color to traces of the element chromium. The more chromium, the stronger the …