The Curtis Island Mine is a turquoise mine. The Curtis Island Mine is located in southeast Queensland a distance of about 450km north-northwest from Brisbane (show me). The Curtis Island Mine is at an elevation of approximately 27m above sea level. The Curtis Island Mine is a turquoise mine.
While Turquoise mineral deposits have been found in many Australian states, including New South Wales, Northern Territory, Queensland, South Australia, Tasmania, Victoria, and Western Australia, these extremely limited occurrences do not produce high quantities or good qualities, with most specimens incapable of being ...
Rainforest Jasper is known in different parts of the world by several other names. These include Spherulitic Rhyolite, Agatised Rhyolite and Green Rhyolite. This unique gemstone is mined only at Mt Hay, 38 kms west of Rockhampton in Central Queensland.
The Gemfields in central Queensland — Rubyvale, Anakie, and Sapphire – are also popular places to go gem-hunting, with these small towns living up to their namesakes. There are zircons, sapphires, peridots, rubies, and emeralds.
Thunderbird Park: Thunderegg Crystal Mine | Tamborine Mountain, QLD.
Turquoise has been mined all over North America for hundreds of years, but its richest deposits have always been found primarily in the southwestern states of Arizona and Nevada. California has also been a popular source of the opaque blue gemstone over the years, with mines found in San Bernardino and Inyo Counties.
"The most common places known for good quality turquoise are Iran (Persia), Egypt, Northwest China, Mexico and the southwestern part of the United States. Although there can be mines found in many states, Colorado, New Mexico, Arizona and Nevada are the most common places where you will find them.
Lander Blue Spiderweb Turquoise is some of the rarest Turquoise on earth and in high demand, Buyers must beware of impersonators, the highest grade of Chinese Spiderweb Turquoise is often sold as Lander Blue Turquoise, it takes an experienced professional to detect true Lander Blue Turquoise.
How much a turquoise stone is worth is a common question among turquoise collectors. The price of turquoise stones normally range from $1 to $10 per carat but can range from $0.05 to $1000 per carat depending on the quality.
There are different measurement units for turquoise rock, but you can expect to pay anywhere from $3 to $5 per carat, but if you want to buy per gram, you'll have to pay anywhere from $15 to $25.
First, rub a cotton swab with pure acetone ( nail polish remover). Then apply it to the questionable turquoise stone and wait 10 minutes to see if any green or blue color transfers off the stone along with the liquid. If the turquoise you're examining is real turquoise, the blue color will not rub off.
Most turquoise has been found in deeply weathered and altered rhyolitic volcanic rocks. Turquois may be a weathering product of the mineral apatite, or it may even include some organic phosphate. Turquois forms triclinic crystals---three unequal axes, none of which intersect at right angles.
Raw turquoise can often appear almost botryoidal, with irregularly sized, vaguely round sections protruding in between thin layers of other material. That's not the case with every piece of turquoise, it's a highly variable material.
The highest quality turquoise (clear color, low porosity, no matrix) ranges from $1,500 to $25,000 per gram. To put this into perspective, gold is roughly $60 per gram.
Turquoise is one of the rarest gemstones in the world. Rare- (of an event, situation, or condition) not occurring very often. (of a thing) not found in large numbers and consequently of interest or value. Unique-being the only one of its kind; unlike anything else.
Your turquoise turning green is a good sign, as real turquoise gemstones turn green over time. Turquoise gemstones are porous and absorb oil and water, which causes discoloration over time. If you don't like the green color of your turquoise gemstone, don't worry, as it can get returned with proper cleaning.
Turquoise deposits can be found in surface rocks and can be separated from the host rock with hand tools. Many deposits lead to larger veins that run deeper underground and/or in mountainsides.
Turquoise is naturally a soft stone, but howlite (the turquoise imitation), is even softer. This means that if you scratch your stone and it scratches easily, you most likely have a piece of howlite. But if it's very difficult to scratch your stone, you've got genuine turquoise!
Less than 5% of genuine turquoise is hard enough to be used in jewelry without treatment and be considered completely natural. Most of this material is very porous when it comes out of the ground and doesn't take a good shine. When it is being cut it can be very brittle and crack or fall apart.
Turquoise, a stone ranging in color from blue to green to yellow, is filled with wonderful patterns of brown and black matrix that are composed mainly of copper deposits.
Turquoise is a popular gemstone that has long been prized in many cultures. It's said to bring luck, peace, and protection, and it's also one of the birthstones associated with December.
Turquoise: turquoise is a "cryptocrystalline" material: it's made of tiny crystals (you will rarely see individual crystals) it's a hydrous (water) copper (Cu) - bearing phosphate mineral.
Chrysocolla, the king of carbonate copper gemstones, is an alluring, vivid blue-green color and is often mistaken for turquoise because they share many visual similarities.
-Scratch test: real turquoise is relatively soft and can be scratched with a knife, while fake turquoise is harder and will not be scratched as easily. Turquoise comes in a variety of colors, from light blue to dark green.