Hydrothermal Red Ruby, Pear

Description

Hydrothermal red rubies are synthetic gemstones created using a process that mimics the natural conditions under which rubies form in the Earth’s crust. Here’s a detailed explanation of what hydrothermal red rubies are and how they are produced:

• Formation: Natural rubies are formed deep within the Earth’s crust under high pressure and moderate temperature conditions, typically in metamorphic rock formations where aluminum oxide (corundum) crystals incorporate trace amounts of chromium, which gives rubies their characteristic red color.
• Synthetic Replication: In a laboratory setting, hydrothermal synthesis recreates these natural conditions by dissolving aluminum oxide (alumina) and other necessary chemicals in a water-based solution. This solution is then heated under high pressure to facilitate crystal growth over a period of weeks to months.
• Color: Hydrothermal rubies exhibit a vivid red color similar to natural rubies due to the presence of chromium ions within the crystal structure.
• Clarity: They can have excellent clarity because they are grown in a controlled environment without the natural inclusions and imperfections often found in mined rubies.
• Hardness: Like natural rubies, hydrothermal rubies are very hard, ranking 9 on the Mohs scale of hardness, just below diamonds.