Formation of Nephrite
Chris Isidore
| 28-06-2024
· News team
Nephrite is a precious gemstone that has been regarded as a symbol of auspiciousness and peace in ancient times, representing safety and protection.
It is widely used in many cultures. However, Nephrite is not a stone that can grow directly; it is formed through specific geological processes over a long period.
Nephrite is composed of two main types: hard Nephrite and soft Nephrite. Typically, when people refer to Nephrite, they mean soft Nephrite. Hard Nephrite is an artificially produced mineral with lighter colors, primarily composed of jadeite and albite.
These minerals undergo high temperatures and pressure during geological processes, resulting in the formation of Nephrite with a hard appearance and diverse colors. Soft Nephrite, on the other hand, is a naturally occurring mineral with deeper colors, mainly composed of albite and quartz. It forms under lower temperatures and pressure during geological processes, resulting in Nephrite with a softer texture and vibrant colors.
However, there are increasingly fewer ways to promote the formation of Nephrite through artificial cultivation. People can choose suitable Nephrite stones for Nephrite growth, simulate appropriate environmental conditions, and add specific substances to promote the formation and growth of Nephrite.
This artificially cultivated Nephrite is often called "cultivated Nephrite." They have a similar appearance and texture to natural Nephrite, but because their formation process does not undergo natural geological processes, they are often considered inferior in the market.
Regardless of whether it is a natural Nephrite or cultivated Nephrite, the formation process is very lengthy. The formation of natural Nephrites requires hundreds of thousands to tens of millions of years of geological processes, while the production of cultivated nephrites also takes several years or even longer.
This time includes the selection of stones, simulation of growth conditions, and processing and refinement of the stones. Therefore, both natural Nephrites and cultivated Nephrite require a long time to form.
As for whether cut Nephrite stones will change, the following are detailed explanations:

1. Appearance changes after cutting:

Cut Nephrite stones will reveal internal cracks, color patches, or patterns during the cutting process. The appearance of Nephrite itself does not undergo sudden changes, but the exposed cut surface may be more susceptible to environmental influences.

2. Color changes:

The color of Nephrite primarily comes from ions of elements such as iron, chromium, cadmium, and cobalt, as well as interwoven pigment particles.
These particles do not change during the cutting process, but they may undergo slight changes due to environmental influences. Especially when exposed to sunlight or prolonged exposure to strong light, Nephrites may gradually fade.

3. Refractive index changes:

The refractive index of Nephrite is also part of its color. Different grains in cut Nephrite stones may have slightly different refractive indices, which become more pronounced after cutting. However, the refractive index itself does not change over time.
The depletion of Nephrite resources has become a significant issue troubling modern society, especially for Nephrite enthusiasts. They feel deeply saddened by the depletion of Nephrite resources.
Hetian Nephrite resources are still relatively abundant, but the majority of these abundant Hetian Nephrite resources are of average quality. The scarcity of high-quality Nephrite has led to a phenomenon resembling depletion.