Sunrise Sunset Time Calculator to find the exact Sunrise time and Sunset time in any place or city around the world. Citywise sunset Calendar and Sunrise calendar. What is today's Sunset Time in a ...

You may have heard of diamond qubits, but diamonds aren’t the only gemstones that can be used to store quantum information. A new study reveals that spinel, a vibrant and rare gem, can also be ...

Ruby is an incredibly durable gemstone if there are no treatment-related durability concerns. - Courtesy Jan Goodman Co. Hardness and toughness Gem and mineral hardness is measured on the Mohs scale.