Diamond Knowledge

Diamond Lesson: Diamond is a symbol of love and an indispensable element in industry. Diamond is one of the top five precious stones, do you know enough about it? Let Foxlink take you through all aspects of the diamond, from how it is created to how to select it!

An introduction to the history of superconductors

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Superconductivity is a fascinating physical phenomenon where, under specific conditions, materials exhibit zero electrical resistance and expel magnetic fields completely. The history of this field is intertwined with the contributions of many renowned scientists, significant experimental discoveries, and theoretical breakthroughs. Let’s delve into the trajectory of superconductivity, exploring how this mysterious phenomenon has been progressively unveiled and applied.

Synthetic diamonds

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The phrase “Diamonds are merely unremarkable carbon” highlights the essential truth that both diamonds and graphite are made of pure carbon, but in different forms, or allotropes. This discovery led to the continued pursuit of methods to artificially create diamonds. After 157 years of research, scientists found that a key factor in transforming carbon into diamonds is the use of catalysts, also known as chemical agents, to accelerate the process.

Identification Characteristics of Diamonds and Simulants

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Gemstone (Gem) Mohs hardness (Hardness) Specific Gravity (Specific Gravity) Refractive Index (Refractive Index) Reflectivity (Reflectivity) Double Refraction (Double Refraction) Dispersion (Dispersion) Synthetic Rutil (Synthetic Rutil) 6.5 4.25 2.76 19.75 0.287 0.330 Synthetic Moissanite (Synthetic Moissanite) 9.25 3.22 2.67 20.67 Strained 0.104 Lithium Niobate (Lithium Niobate) 5.5 4.64 2.55 14.87 0.090 0.130 Diamond (Diamond) 10 3.52 …

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Diamond Synthesis Method — High Temperature and High Pressure

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Currently, the world’s popular high-temperature and high-pressure diamond synthesizing equipment mainly consists of two-sided tops (belt, which is mainly popular in Europe and the United States), six-sided tops (unique to Mainland China), and splitting spheres (barssplitsphere, Russia) or modified splitting spheres (Gemesis Company). In 1954, before Christmas, the General Electric Company in the United States …

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Formation of natural diamonds

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Natural diamonds are produced at depths of over 130 kilometers. It has a unique cubic crystal structure. Each carbon atom in a diamond is bonded to four other carbon atoms, making it the hardest natural substance known in the world. How are diamonds formed? Let’s find out!

Diamond Synthesis Method – Chemical Vapor Deposition

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How to make diamonds by chemical vapor deposition? Chemical vapor deposition (CVD) produces pure, high-performance solid materials. A small diamond, which serves as the “core”, is placed in a vacuum environment to remove impurities and injected with high temperature gases – methane and hydrogen – at 3,000 degrees Celsius, which cracks to form electrically charged …

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