What are the three major factors that determine the color of a gemstone?

Gemstone color can be broken down into three categories: hue, tone, and saturation. The first factor, hue, refers to the specific color of the stone.

What determines gemstone color?

Every gemstone has its own unique chemical and atomic structure. Diamonds are made of carbon, rubies and sapphires of aluminium chloride – and so on. This, along with the presence of impurities, leads to the absorption of different wavelengths of light. The result is that gemstones vary in colour.

What are the 3 factors that make a gemstone?

The gems that crystallize underground typically require very high pressures and temperatures. Time and space are fairly straightforward requirements. The right combination of ingredients, heat, and pressure must last long enough for the minerals to crystallize. They also need room to grow.

What are the factors that contribute to the value of gemstones?

In this first installment of the series, we have reviewed the seven major factors that affect the price of a colored gemstone: color, uniformity of color, country of origin, size, clarity, shape, and quality of cutting.

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What are the 4 C’s of gemstones?

Determining the quality of a gemstone involves what jewelers refer to as the “four C’s.” They are as follows:

  • Color.
  • Clarity.
  • Cut.
  • Carat Weight.

What elements make up gemstones?

The most common trace elements in gemstones are beryllium (emerald), chromium (emerald, jade, chrome tourmaline, ruby and topaz), copper (Paraiba tourmaline, turquoise and malachite), iron (yellow sapphire, aquamarine, green tourmaline, chrysoberyl, citrine and jade), lithium (green and pink tourmaline), manganese ( …

What element makes gems blue?

Ferrous iron (Fe2+) usually gives a blue or green color. Ferric iron (Fe3+) usually gives a yellow or brown color. (The oxidation state affects how iron bonds to neighboring atoms in the crystal). Most well-known jewelry gemstones, including quartz, spinel, topaz, and tourmaline, are allochromatic.

What are the four factors that help in determining the value of a gemstone?

The Four C’s of Colored Gemstones. Affectionately known as the Four C’s to us gem nerds, Carat, Clarity, Color, and Cut are the four yardsticks used to measure gemstone value. Whether you plan to buy one gem or begin a collection, it is worth your while to understand how each of these factors affect your investment.

How do you determine the quality of a gemstone?

A gemstone should not be so dark that its color is obscured, nor so light that its color appears pale or indistinct. Saturation describes how pure or intense a color appears, and it is a key component in determining a gemstone’s value.

What defines a gemstone?

gemstone, any of various minerals highly prized for beauty, durability, and rarity. A few noncrystalline materials of organic origin (e.g., pearl, red coral, and amber) also are classified as gemstones. … The prime requisite for a gem is that it must be beautiful.

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What gives sapphires and other gemstones their colors?

Most corundum contains color-causing trace elements. When the trace elements are iron and titanium, the corundum is blue sapphire. Only a few hundredths of a percent of iron and titanium can cause the color, and the more iron the corundum contains, the darker the blue.

What does gem quality mean?

Grading Gemstones and Diamonds

The “Four Cs” of gem grading stand for color, clarity, cut, and carat (weight). Gemologists grade gemstones based on these properties. … However, first you must understand that gemstones are graded by the rarity of their features.

What are the 4 most precious stones?

The four most sought-after precious gemstones are diamonds, sapphires, emeralds, and rubies. gemstone can help you decide what you want to say with your custom piece of jewelry.

How many gemstones are there?

There are roughly 200 varieties of natural gemstone known in the world today. Alongside the world’s precious gems (diamond, ruby, sapphire, and emerald) are numerous semi-precious stones, some of which are so incredibly rare that their value outstrips many of the world’s most valuable precious gems.

What does secondary stone mean?

Secondary hues, also referred to as secondary colors or overtone colors, are additional colors that appear in diamonds. These secondary hues affect the final color of a diamond. … An example of a diamond containing a secondary hue would be a natural fancy intense greenish yellow diamond.