Gems and Precious Stones

There are a few different kinds of gemstones that come in lavender. Amethyst is the one most people are familiar with but others include spinel and purple sapphire. Tourmaline and garnet can also exhibit shades of lavender.

Some diamonds that are also used as given names include Tiffany, Marquise, and Emerald.

Sapphire, Lapis lazuli, Chalcedony (dark blue), and Indicolite.

One way to make a mood ring permanently black is by exposing it to extreme heat, such as boiling water or an open flame, which can damage the temperature-sensitive crystals inside the ring that cause it to change color. However, this will likely also ruin the ring completely and render it unusable.

He didn't own any specific gem: by the beginning of the 1900s he had assembled the most important gem collection in America, containing over 1000 pieces.

It Means that it is made in Peru, of Sterling Silver and 18 carat gold. Pieces typical of this hallmark configuration have a large sterling silver base with a thin 18K gold figure in the center. I've mostly seen this hallmark on Brooches, pendants and a few bracelets. If you search on e-bay you will find a number of items with a similar hallmark listed under "Peru Silver".

Pejmani is one of the best jeweler in the world. he is really one of the best. I love his creations.

The orange semi-precious stone from India is typically known as carnelian. It is a type of chalcedony quartz that exhibits hues ranging from orange to reddish-brown. Carnelian is highly prized for its vibrant color and is often used in jewelry making.

The price of a 10 carat emerald can vary widely depending on the quality of the stone, such as its color, clarity, and origin. Generally, you can expect to pay anywhere from a few thousand dollars to tens of thousands of dollars for a high-quality 10 carat emerald. It's recommended to consult with a gemologist or jewelry expert for a more accurate estimate.

The value of a 1 carat synthetic ruby can vary depending on factors such as quality and clarity, but on average, it can range from $10 to $100 per carat. Synthetic rubies are typically less valuable than natural ones.

Black topaz is not a naturally occurring gemstone. Sometimes, a regular topaz can be treated to create a black color by treating it with radiation and heat. This treated black topaz is not as valuable as natural topaz.

Another name for opal is "fire opal."

yes oxyx is a semi-precious stone.

It is an agate.

Most of the onyx in the market today are heat treated agates

Ghundao Hill, north of Katlang, in Mardan. It's usually colorless to tan, occasionally pink, very rarely an intense pink-red-magenta color. This material formed in a metacarbonate, very like Brazilian imperial topaz (which it can closely resemble in crystal form) and very unlike the igneous material from elsewhere in Pakistan.

If it's a silver ring, it will have a number like ".925", which indicates it's true sterling silver. If it's some form of gold, it will have a carat number, such as 14k, which indicates what proportion of 24 is gold. 14k indicates the ring is 14/24 gold.

The value of an 18CT platinum ruby and diamond ring can vary widely depending on the quality and size of the stones, the design and craftsmanship of the setting, and the current market demand. A qualified appraiser would need to assess the ring to provide an accurate valuation.

The size of a 15 carat topaz can vary depending on its shape and cut, but as a reference point, a round 15 carat topaz gemstone could measure approximately 14mm in diameter.

One carat (1.00 carat) weighs about .02 grams, and what you want is an example of something that weighs .15 carats.

Any US paper bill (currency) weighs one gram. So if you cut the bill into fifths, you'd have a strip of currency that weighs one carat. Then you'd cut the strip again into 20 equal pieces. Three of the remaining pieces will weigh .15 carats.

Diamonds are actually one of the most plentiful substances on earth. In fact 130,000,000 carats or 57,000+ lbs worth of diamonds are dug up every year with another 220,000+ lbs artificially synthesized*.

The reason they seem scarce is because those in control of the diamonds (De Beers mostly) horde them to create artificial scarcity and pump up the price thousands of times over.

If all the diamonds in the world were to suddenly flood the market, CZ would probably cost more.

*cited from Wikipedia

Coober Pedy is unique for its underground homes, which are dug into the earth to help shield the residents against the summer heat and winter nights.

Earth provides a natural insulation against extremes of temperatures. While the summer average is around 35 degrees Celsius (95 degrees Fahrenheit), summer days in Coober Pedy can reach a maximum of 50 degrees Celsius (122 degrees Fahrenheit). Winter nights can reach the other extreme, being bitterly cold. Also, the enclosed underground homes have better protection against the occasional duststorms that wing their way across the Australian desert.

Opal mining is not a prominent activity in Texas. While there may be some small-scale mining operations, Texas is not known for its opal deposits compared to other states like Nevada or Idaho.

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