lapis lazuli
Iolite generally has a blue color, and leans a little toward purple.
Jasper is a stone used in jewelry. It comes in many colors including blue, red, orange, black, brown, green, gray, or yellow.
It will usually be cut and polished to be used in jewelry.
The blue-green stone imported from the Sinai peninsula is called "Eilat stone." It is a unique mixture of green malachite, blue azurite, turquoise, and other minerals, creating a striking and vibrant color combination. Eilat stone is often used in jewelry and decorative items.
Quartz
Zircon is a gemstone used in rings and other jewelry. Zincite is another stone used in jewelry.
One can purchase stone necklaces at Walmart, Target, Amazon and eBay. One can also find it at jewelry stores such as Ben Moss, Etsy, My Jewelry Store and Blue Stone.
Blue diamond jewelry can be used for any occasion and comes in a wide array of choices. You can purchase blue diamonds in almost any form of jewelry that there is. Such as earrings, necklaces, rings and even broaches.
Amethyst is a precious stone much like but not as popular as diamonds. It is used in jewelry such as rings, necklaces and bracelets.
To be used in jewelry, stones are generally cut and polished, using a variety of equipment and processes.
rumors of it being a "toxic" stone