50 usd per kg
Tourmaline is commonly black but is sometimes rose, blue, pink and most rare green. Green tourmaline is worth about £70 per gramm if it is of a moderate quality.
The price of raw black tourmaline can vary depending on quality and market demand, but generally ranges from $10 to $50 per kilogram. Prices may fluctuate based on factors such as size, color, and clarity of the crystals. It is recommended to compare prices from different suppliers before making a purchase.
Blue Tourmaline is extremely rare. Very few suppliers have a Kg in stock. What is available once in a Blue Moon is in the range of a hundred carats depending on the auction the price range 1 to 3 bucks per carat. That's $3 x 5 x 1000 = $15,000 estimated for Blue Tourmaline rough.
The cost of topaz per carat can vary based on factors like its color, clarity, cut, and size. On average, good quality topaz can range from $10 to $30 per carat. Rare and high-quality topaz can be priced higher, sometimes exceeding $100 per carat.
The value of black amethyst can vary depending on factors such as size, quality, and demand in the market. On average, black amethyst can range in price from $10 to $50 per carat. It is recommended to consult with a reputable jewelry appraiser or gemologist for an accurate valuation.
Tourmaline is commonly black but is sometimes rose, blue, pink and most rare green. Green tourmaline is worth about £70 per gramm if it is of a moderate quality.
The price of raw black tourmaline can vary depending on quality and market demand, but generally ranges from $10 to $50 per kilogram. Prices may fluctuate based on factors such as size, color, and clarity of the crystals. It is recommended to compare prices from different suppliers before making a purchase.
It depends on whether it is treated or natural. The cost of a treated black diamond ranges from as low as $100 to $200 per carat whereas a natural diamond, which is GIA certified the cost per carat ranges from $2500 to $3000, depending on the quality.
It depends on the seller and quality but on average it is worth about $196 per caratAnother AnswerAccording to the link, below, the average purchase price is slightly higher for one carat of black diamond: US$1,015 to US$1,450.
Blue Tourmaline is extremely rare. Very few suppliers have a Kg in stock. What is available once in a Blue Moon is in the range of a hundred carats depending on the auction the price range 1 to 3 bucks per carat. That's $3 x 5 x 1000 = $15,000 estimated for Blue Tourmaline rough.
22 carat gold=4.4g (As 1 Carat gold=0.2g).
do the math
12k gold would be worth about $487.50 per ounce.
Every diamond is valued by its carat weight, its colour, its cut and its clarity. There is no standard. Without endorsement, you can price black diamonds, below.
A diamond is valued by its cut, clarity, carat weight and colour. A local jeweler can show you a stone and give you a precise answer.
23CARAT is 36 U.S $ per gram approx
The value of a diamond -- regardless of its colour -- depends on its cut, its clarity, its colour and its carat weight. A local jeweler can give you the answer you want.