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Gems and Precious Stones
Gems and precious stones are cut or polished minerals used to create jewelry, accessories and other ornaments. Some of the most popular precious stones include amethyst, aquamarine, diamond, emerald, opal, ruby, sapphire, topaz, and turquoise.
1,193 Questions
- Diamond is an allotropic form of carbon.
- Ruby and sapphire are aluminium oxide naturally doped with some metals (as traces).
- Emerald is Be3Al2(SiO3)6.
- Chrysoberyl is Be2Al2O4.
- Opal is hydrated SiO2.
- Peridot is MgSiO4.
- Topaz is Al2SiO4(F,OH)2
- Malachite is Cu2CO3(OH)2.
- Jades and garnets are complex silicates.
* tiger's eye * mandarin garnet * orange sapphire * hessonite * tourmaline * citrine * imperial topaz * Any stone with a high level of iron can turn a rusty orange color
What types of sapphire are there?
Sapphire is the name given to the blue variant of crystals of a substance called Corundum = Aluminium Oxide Al2O3.
Sapphires are graded on the intensity of their colour and clarity but there is also a variant called a "Star Sapphire" which has internal crystal arrangement that cause it to display an asterism in the form of a six-rayed star.
Where does sapphire get its name?
From the Online Etymolgy Dictionary: 1272, from Old French saphir (12c.), from Latin sapphirus(cf. Spanish zafir, Italian zaffiro), from Greek sappheiros "blue stone" (the gem meant apparently was not the one that now has the name, but perhaps rather "lapis lazuli," the modern sapphire perhaps signified by Greek hyakinthos), from a Semitic source (cf. Hebrew sappir "sapphire"), but probably not ultimatetly from Semitic; some linguists propose an origin in Sanskrit sanipriya, a dark precious stone (perhaps sapphire or emerald), literally "sacred to Saturn," from Sani "Saturn" + priyah "precious." (I spelled out the Language names that were abbreviated and highlighted them with bold lettering).
What is the basis of a crystal?
The basis in crystals is that it is uniquely arranged in a given solid or liquid.
How much would a small piece of Hematite cost?
Hematite is very valuable. For one ounce... it could be around $300. Very valuable. If your looking to by some, save up. If you have some... you are very lucky to own Hematite. Thanks for listening/reading!
-Dr. Aromo Dohun
Precious as they have come from space, yes, but minerally, likely not, as it's not like your run of the mill meteorite will have any special composition not found in earth rocks.
Yes, 1, all sides - octahedral. Dodecahedral Diamonds, Borts, and Carbonado exhibit poor or no cleavage. Source: http://www.minerals.net/mineral/diamond.aspx
Color is typically created by a material absorbing a certain wavelength (or wavelengths) of light (there's also emission and scattering, but absorption is the primary method).
Diamond's atoms and electrons are very tightly bound, and thus have little to no opportunity to wiggle and absorb any light passing through...hence it is highly transparent as light passes through basically untouched.
Some diamonds have yellow tints because nitrogen has been incorporated in parts of the diamond....these have an extra electron hanging around that is not bound as tightly, and thus these free electrons can interact with incoming light and impart a yellow tint. The more nitrogen, the more light (blue and violet wavelengths) can be absorbed and the deeper the yellow color.
Diamond has the largest transparency of any material.
AnswerFirst diamond comes in all colors. The colorless variety of diamond is also known as white diamond. Color in any gemstone is determined by coloring element present in it, same case is with diamond. Nitrogen (mainly) and Boron are the two coloring element present in diamond. The state of nitrogen and boron in atomic structure plays a vital role in color determination of diamonds. Nitrogen generally gives yellow or brown color while boron gives blue color.Opals are very delicate. You have to be very careful when wearing them that you don't bang them against hard surfaces or they can chip or break. They also need to be hydrated and will dry out and get dull if not worn often. Never clean them with regular jewelry cleaning solutions use only watered down toothpaste and a soft toothbrush.
(Cwe) Charles winston edition (cz)cubic zirconium (925) sterling silver (nf) nickel free..
Is labradorite worth anything?
Labradorite is a semi-precious gemstone valued for its iridescent play of colors, making it popular in jewelry. The value of labradorite can vary based on factors like quality, size, and color intensity. Higher quality labradorite with vibrant colors is generally more valuable.
Rare and beautiful minerals are called what?
They are called gemstones.
Rare, beautiful minerals are generally classified as "gems" or "gemstones".
Which stone family does Table Mountain shadowkite belong to?
Table Mountain Shadowkite is part of the chrysocolla stone family. Mountain Shadowkite is a brand new stone offering from the LC that customers.
Can you use tungsten for jewelry?
Yes, and it has become more popular in recent years. Many believe this is because it is much more economical than gold or platinum. In order for it to be good for jewelry, it must be tungsten carbide, which will contain a binder such as nickel, and a few other metals such as chromium for shine etc.
If the timing is off will a 1990 Acura Integra start?
if you havent removed the distributer from the head it should start if you center the top notch on the distributer with the cylinder head....
How do you know if its the timing or the starter motor, and what mileage did U guys get on the starter motor, mine is playin up but I'm not actually sure if its that our the timing?
If it's off by a tooth or so (on the timing gear), or a few degrees via distributor rotation, it should still start fine, but how well it runs is another matter. I just recently noticed my timing had been off by like 15 degrees for two years--side effect was slight loss of high end power and lousy gas mileage. I noticed a big difference after I got the timing corrected.
>Regarding the starter motor : I had a lot of issues with my original starter, like not starting at all in the cold, even after multiple rebuilds (at $50 a pop). About three years ago, I finally got a remanufactured one from NAPA for $60, it's been working flawlessly ever since.
What crystal jewelry starts with the letter z?
Zircon is a gemstone used in rings and other jewelry. Zincite is another stone used in jewelry.
Who buys raw herkimer diamonds?
"Herkimer diamonds", the particularly beautiful clear doubly terminated quartz crystals found around Herkimer, NY, are mostly sold to mineral collectors, tourists, or anybody that wants an amazing piece of natural artwork to grace a shelf. Loose crystals are also quite popular in jewelry making, being easily and quickly turned into attractive pendants. Some are bought by faceters for cutting. They are also sold to sick people, by crooks, for purposes of "crystal healing" and similar nonsense.
What does one large diamond heart beneath a small diamond heart mean?
One large heart diamond beneath a small heart diamond means "Love is forever"
Are there any tanzanite mines producing diamonds?
Tanzanite is found in an area where there are no diamonds. Natural tanzanite is endemic only to the Mererani Hills of Northern Tanzania.
What is the chemical name for the mineral turquoise?
The chemical formula of turqoise is CuAl6(PO4)4(OH)8·4H2O (a hydrated phosphate of copper and aluminium).
