Opal, Agate, Petrified Wood, Jasper, fossil bone.
Now for the real Answer.......Which one of the five would last the longest to win the old reward of lasting some 300,000,000 plus years,
And beat out the Hydration of silicates the main Killer of Rock.
Funny Ha, Not Funny
You`l Live longer ( ROCK ) below the water table............
The semiprecious gemstone associated with the state of Nevada is the Black Fire Opal. It is the official state precious gemstone of Nevada, known for its vibrant play of colors. Black Fire Opal is found primarily in the Virgin Valley located in northern Nevada. The gemstone is highly valued for its striking and unique appearance, making it a popular choice for jewelry and collector pieces. You can visit the Cabochonsforsale to know all the gemstone history and significance.
My favourite semi-precious stone is the Amethyst.
The definition of a gemstone is a precious or semiprecious stone, especially one that has been cut, polished, and used in a piece of jewelry.
Beryllium comes from the latin word beryllus, which means "to become pale". This is in reference to the semiprecious gemstone beryl, which is also pale.
A gemstone can be a precious or semiprecious stone, a mineral crystal, or a mineraloid (such as amber) which can be used to fashion an object of adornment or beauty.a precious stone that is considered rare and reflects light in an unusual way.
Her ring has several semiprecious and precious stones. Semiprecious stones are not as valuable as precious stones.
Semiprecious refers to gems having value, but not precious.
Semiprecious refers to gems having value, but not precious.
The interest in the possible healing and life-enhancing effects of various semiprecious stones and crystals is stimulating growth in sales of gemstone bracelets, pins, and pendants
Semiprecious metals and gems have characteristics of precious ones, but are not totally the same
precious gems are rare and valuable and the semiprecious are not as rare
A diamond, ruby or sapphire is said to be a "precious" stone. An amethyst is said to be a "semiprecious" stone. Semiprecious objects are therefore less valuable than precious ones.