Gems and Precious Stones

To make gold(III) phosphate (AuPO4), you would need to use a stoichiometric ratio. From the masses provided, you have excess gold. The limiting reagent is phosphoric acid, so all 77 grams of it will react with gold to form gold(III) phosphate. No gold(III) phosphate will be formed due to the lack of sufficient phosphoric acid.

The value of a 2.5 carat opal can vary significantly depending on factors such as the quality, color, clarity, and origin of the stone. In general, opals can range in price from a few dollars per carat for lower-quality stones to several hundred dollars per carat for high-quality stones. It is recommended to have the opal appraised by a professional to determine its exact value.

AAA quality tanzanite Vb or bV 6/5 or 5/6 has a value of around £250 per ct. TV stores do not usually sell this quality and value should be reduced accordingly

For Fine Quality Tanzanite around 2-10 carats value would be around $2000-$5000 per carat. You can get this Top Fine Tanzanite at Mohranet.com

http://www.mohranet.com/gemstone/Loose-Tanzanite-Rings/1

www.Mohranet.com - Gemstone Bracelets, Gemstone Rings, Gemstone Earrings, Pendants, Tanzanite Rings, Diamond Rings, AAA tanzanite Gemstones, Studs, Emerald, Aquamarine rings, Sapphire

Genuine Briolite does not scrath like cubic zirconia, nor does it fog up when you breathe on it. The reason for it is this: SYNTHETIC GEMSTONES are identical to a natural gemstone in almost every way. This includes the same basic crystal structure, refractive index, specific gravity, chemical composition, colours, and other characteristics. Since the same gemological tests are used for stone identification on both natural and synthetic gems, it is sometimes even possible for a gemologist to be puzzled as to whether or not a stone is natural or synthetic. When this occurs, the best course of action is to send the stone to an accredited gem laboratory, like the Gemological Institute of America. They can positively determine whether a stone is synthetic or naturally occuring. Only minor internal characteristics allow separation of a synthetic gemstone from a natural gemstone. IMITATION GEMSTONES merely imitate the color or look of a natural stone. They can be made out of anything. A Cubic Zirconia or Moissanite are IMITATION diamonds, for example. A blue piece of glass could be an imitation sapphire. A variety of blue synthetic forsterite is an excellent imitation for tanzanite, while chemically, it's composition is much closer to the yellowish green peridot. Another classic example is the "alexandrite" set in many jewelry pieces is actually a variety of vanadium colored synthetic sapphire!

It is impossible to determine who found the first diamond, but until the Dutch discovered them in South Africa, India was the only known source.

It is possible that the first human picked up a diamond more than 6,000 years ago, probably in India.

Diamonds are most commonly found in Africa due to the presence of ancient volcanic activity that brought diamonds closer to the Earth's surface where they could be mined. Additionally, Africa has a long history of diamond mining, with countries like Botswana, South Africa, and Angola having significant diamond deposits. Political stability and the presence of well-established diamond mining operations also contribute to Africa's status as a major diamond producer.

Tourmaline is a group of gemstones. It occurs in almost every color. Besides being found in many different colors and shades, tourmaline may have more than one color in the same piece. The best known varieties of tourmaline are green tourmaline, pink tourmaline, and blue tourmaline. Tourmaline is very durable and very well suited for jewelry.

While an individual agate may display special colors and patterns that can make them highly desireable to rockhounds or other collectors it is not considered a "precious" stone. It is possible to find numerous examples that have sold for more than a hundred dollars.

any gemstone of extremely very good quality will be called precious.

So all agates are not precious

only few agates of very very good quality can be called precious

same way all diamonds are not precious, only very good quality diamonds can be a called precious.

Jewelry in the form of a circle typically symbolizes wholeness, unity, and eternity. Circles have no beginning or end, representing infinite possibilities and timeless connection. Wearing circular jewelry can signify a sense of completeness and balance in one's life.

The "K" inside a circle on a gold ring typically indicates the purity of the gold. It stands for karat, which is a measure of the gold's purity. For example, "14K" means the gold is 14 karats, or about 58.3% gold content.

Gemstones can be found in mines around the world, such as diamonds in Africa and Australia, emeralds in Colombia, and rubies in Myanmar. Some gemstones are also found in rivers or ocean beds, like sapphires in Sri Lanka or pearls in the Persian Gulf. Additionally, gemstones can be purchased at jewelry stores, gem shows, and online retailers.

Depends on where and how much. Most private investors simply buy what they can when spot prices are low and hold as long term way of storing their wealth.

In many cities, the governments are licensing, taxing, controlling and fining people who buy and sell precious metals. For example, in Madison Wisconsin, it's a big deal and quite expensive...

http://www.cityofmadison.com/clerk/secondhandDealer.cfm

TWD Diamond is a digital currency used in blockchain-based projects and games within The Walking Dead universe. It can be earned, bought, and used for various in-game activities and purchases.

The value of a topaz rock can vary depending on factors such as size, color, clarity, and cut. Generally, smaller topaz stones can range from $10 to $100 per carat, while larger, high-quality stones can be worth several hundred or even thousands of dollars per carat. It is recommended to have a professional gemologist evaluate the specific characteristics of the topaz to determine its value accurately.

The "5C" on a gold ring typically refers to the purity of the gold, with "5C" indicating that the gold is 5 karats in quality. Gold purity is often measured in karats, with 24 karat gold being the purest. It is important to note that 5 karat gold is not common, as it is quite low in purity compared to the more standard 14, 18, or 24 karat options.

Excessive flatulence could be caused by certain foods, swallowing air, or underlying digestive conditions. Encourage him to keep a food diary to identify trigger foods, consider incorporating probiotics, and consult a healthcare provider if the issue persists.

From Wikipedia:

"Moissanite /ˈmɔɪsənaɪt/ originally referred to a rare mineral discovered by Henri Moissan having a chemical formula SiC and various crystalline polymorphs."

Diamonds are formed from carbon.

Some gem-stone producers sell cut and polished moissanite as diamond replicas: moissanite is not diamond, but enjoys its own separate gem status.

You can read more, below.

A 4.36 round diamond J color and VS2 clarity with a very good cut is worth about $54,138. For details on this and other information, get in touch with us via www.dubaiwholesalediamonds.com/enquiry.

Amethysts are very popular and widely available making them very affordable. It is a purple form of the quartz mineral. The most popular places amethysts are found are in Mexico, Brazil, Namibia and South Africa.

Synthetic is not a term used to describe imitation pearls. Synthetic, in the case of gemstones, is completely manmade, and it has to have the same structure, constituents, and chemistry as its natural counterpart. No cultured pearl is completely manmade. There is always human intervention, but the mollusk grows the cultured pearl. Of cultured pearls, only tissue-nucleated and keshis have the same structure, constituents, and chemistry as their natural counterparts, but they result from human intervention. So when the two criteria that determine a synthetic gem are applied, there is no cultured pearl or imitation that meets both. Therefore, no cultured pearl or imitation is a synthetic.

Tin Cut Crystals are glass crystals that have been treated with tin or lead oxide to give them a unique shine and sparkle. The process typically involves cutting and polishing the crystals to enhance their brilliance and clarity, making them popular in jewelry and decorative items.

A counting frame is commonly referred to as an abacus. It is a calculation tool used for performing arithmetic operations like addition, subtraction, multiplication, and division.

Ruby Thewes is a fictional character in the book "Cold Mountain" by Charles Frazier, but there were, and are, a lot of people very much like her in that part of the world. I highly suggest the non fiction book series "Foxfire" to read true stories of skill, kindness, strength, and occasional prickly common sense very much like Ruby's.

Syamantaka mani, or the Syamantaka Jewel is perhaps the most famous jewel in Indian Mythology, supposed to be blessed with magical powers. The story appears in the Vishnu Purana and the Bhagavatam. The jewel originally belonged to the Sun god, who wore it around his neck. It was said that whichever land possessed this jewel would never encounter any calamities in the form of natural disasters in the form of draughts, floods, earthquakes or famines, and would always be full of prosperity and plenitude. Wherever the jewel remained, it would produce for the keeper almost nine mounds of pure gold daily. It was also the source of the dazzling looks of the Sun god.