Ten cents. No precious metal content
Birthstones are precious or semiprecious stones associated to months (or zodiacal signs). There is no particular meaning to them - unless you happen to be superstitious.
(Maruisite) Marcasite is the trade name for a bright iron mineral called 'cubic pyrite'. When mounted singly or in clusters, marcasite's bright metallic luster resembles diamonds. Common in antique jewelry, marcasite is currently very popular.However, the stones are not considered 'Precious Gems'.
It's always a good idea to have your diamond jewelery -- or any jewelry worn often set with precious stones -- inspected (checked) by a jeweler regularly, who can tighten, replace or re-mount stones so they are not lost.
The value depends on the carat weight of the individual stones, their clarity, colour and cut. Your local jeweler may be able to show you comparable stones and tell you how much s/he would charge you for that inventory.
As with all precious and semi-precious stones the value depends on a number of things such as size and quality
A jeweler works with precious metals and stones.
Precious stones are called gems.
Jewelers work with precious metals and stones.
Her ring has several semiprecious and precious stones. Semiprecious stones are not as valuable as precious stones.
The weight of precious stones is measured in carats. One carat is equivalent to 200 milligrams. This unit is commonly used in the gemstones and jewelry industry to indicate the size and value of gemstones.
As with all precious and semi-precious stones, the value of jasper depends on its size, cut, and quality. You'll need to take your stone to a licensed valuer or jeweler to have it valued.
typesof precious gem
If you think to precious stones they are compounds.
The Unit To Measure Gems And Precious Stones Is Carat.
The value of precious stones can vary based on factors like quality, size, and market demand, but generally, they are often ranked as follows: diamonds, rubies, emeralds, and sapphires. Diamonds typically command the highest prices due to their rarity and desirability. Rubies can be extremely valuable, especially in vivid red hues, followed by emeralds and sapphires, which also have significant value depending on their color and clarity.
Semi-precious stones are "des pierres semi-précieuses" in French.