“Diamonds are a girl’s best friend ... we explore the difference between precious and semi-precious gems and understand these eternal stones' types, cuts, and certifications.

along with complimentary ring resizing and polishing services. I tapped into my knowledge as a gem expert to pick the best lab-grown diamonds for any occasion.

A big, beautiful diamond. Sure, it catches light like no other gem, and it's the hardest material ... proton and neutron from scratch, using two types of quarks—up quarks and down quarks.

The extremely rare, 10-carat Mediterranean Blue diamond could fetch a whopping $20 million at Sotheby's High Jewelry auction ...