Only 25% of diamonds mined are gem quality: the remaining 75% are industrial diamonds, which is another term you could use for low quality diamonds.
People who study diamonds are called gemologists. They specialize in identifying, grading, and evaluating the quality and characteristics of gemstones like diamonds.
People who study diamonds are called gemologists. They specialize in identifying, grading, and evaluating gemstones, including diamonds, based on their quality and characteristics.
Diamonds go through a process called mining, where they are extracted from deep within the Earth's crust. Once mined, the diamonds are sorted, cut, and polished to enhance their brilliance and shape. Finally, the diamonds are graded for quality and then set into jewelry or sold as loose stones.
Diamond quality is measured by the four Cs, including cut, colour, clarity and carat weight. A poor quality diamond is different from a top quality, mostly based on price and value. Elements include, a poor cut, visible flaws, low carat weight, poor colour or treated colour.
The best diamonds are often referred to as "ideal cut" diamonds. These diamonds are cut to precise proportions to maximize brilliance and fire. Other terms used to describe top-quality diamonds include "excellent cut," "Triple Excellent," or "Hearts and Arrows" diamonds.
'Low quality' diamonds are industrial diamonds, which make up about 80% of all diamonds mined. 'Low quality' diamonds used in jewelery could be cloudy with visible inclusions or could be poorly cut.
People who study diamonds are called gemologists. They specialize in identifying, grading, and evaluating the quality and characteristics of gemstones like diamonds.
People who study diamonds are called gemologists. They specialize in identifying, grading, and evaluating gemstones, including diamonds, based on their quality and characteristics.
Natural black diamonds are rare. They are due to dark graphite inclusions. Their rarity makes them valuable. Most black diamonds are synthetic and made by heat treating low quality diamonds. The price of a synthetic black diamond is lower than that of white diamonds.
Black diamonds that are available in the market are usually low grade white diamonds that have been colored black, however, natural black diamonds can be expensive depending on the quality.
Given the high number of diamonds limited by the low carat weight in your question, the cost of the diamonds might not be so much a factor as the quality of the setting into which they are mounted. The clarity quality that you describe wouldn't be so visible in diamonds weighing less than a quarter carat (.25 carat) each.
Brown diamonds are the most common colour of diamonds mined, of gem-quality. Only about 20% of all diamonds mined are of gem quality.
A low quality diamond is often referred to as an industrial-grade diamond or a diamond with industrial use, sometimes known as bort. These diamonds are not used for jewelry due to their lower clarity and color grades.
A black spot in a gem-quality diamond is called a flaw or inclusion.You can read more about the different types of inclusions and their descriptions, below.Industrial diamonds show more 'black spots' than clear spots, which keeps them out of the gem-quality category. About 80% of all diamonds mined are industrial diamonds.
An inferior gem-stone diamond is still called a diamond, and based on its cut, colour, carat weight and clarity, may not be of the highest quality. Non gem-stone diamonds are called industrial diamonds.
A scientist who studies gems such as rubies and diamonds is called a gemologist. They are experts in identifying and evaluating the quality and characteristics of gemstones.
Some flawed diamonds could be called translucent: generally these diamonds are given an industrial use.