Hello everyone, fellow jade enthusiasts! I'm Old Zhang, and I've been involved in jade appraisal and collection for over thirty years. During these years, I've handled countless exquisite jade pieces and witnessed many treasures lose their luster due to improper care. Today, let's talk about the maintenance of Bi-Yu (nephrite jade), which is a meticulous task. But as long as you master the methods, your Bi-Yu will become more and more lustrous with wear and more refined with collection.

Scenario Introduction:

I remember twenty years ago, I had just acquired a superb Russian Bi-Yu bangle, with rich green color and excellent oiliness. Being young at the time, I thought jade was hard and didn't pay much attention to maintenance. As a result, with more sweating in summer and frequent wearing while doing housework, the surface of the bangle developed a hazy 'gray mist' after a while, and its luster was greatly diminished. My heart ached at the time, so I quickly consulted an old senior, only then realizing the importance of jade maintenance. Since then, I've treated every piece of Bi-Yu like my own eyes, carefully and meticulously, and have summarized a set of effective maintenance methods.

Core Techniques: The 'Warm Nurturing' of Bi-Yu

Bi-Yu, especially Russian Bi-Yu, is renowned for its delicate texture and warm, oily quality. Its maintenance primarily revolves around 'warm nurturing,' which means preserving its inherent warmth and avoiding dryness and damage.

  • Regular Cleaning to Remove Dirt: This is the most basic and crucial step. After wearing Bi-Yu for a long time, it will accumulate sweat, oil from the body, and dust from the air. These impurities can clog the tiny pores of the jade, affecting its translucency and oiliness.

* Operation Steps: Prepare a basin of warm water (30-40 degrees Celsius) and add a small amount of neutral, mild detergent (such as baby wash or pure water). Soak the Bi-Yu for 5-10 minutes. Then, use a soft-bristled brush (a toothbrush will do, but it must be soft-bristled) to gently scrub the surface and crevices of the Bi-Yu. Finally, rinse thoroughly with clean water and dry with a soft cotton cloth. Remember, do not use strong alkaline cleaners like soap or laundry detergent, as they can corrode the jade surface.
* Real Case: A friend of mine had a Bi-Yu pendant that, due to long-term lack of cleaning, developed a stubborn 'patina' on its surface, and its color appeared dull. I taught him this method, and after consistently cleaning it for a few months, the pendant's luster gradually recovered, even appearing more oily and lustrous than before.

  • Avoid High Temperature Exposure and Sudden Temperature Changes: The internal structure of Bi-Yu is relatively stable, but prolonged exposure to high temperatures can cause the jade to dehydrate, become dry, and even develop tiny cracks. Sudden changes in temperature, on the other hand, can cause internal stress in the jade, leading to cracking.

* Operation Steps: When wearing Bi-Yu in summer, try to avoid prolonged exposure to direct sunlight. It's best to remove Bi-Yu when taking hot showers or soaking in hot springs. In winter, when moving from a cold outdoor environment to a warm indoor one, also be mindful of avoiding drastic temperature differences.

  • Stay Away from Chemical Substances: Acids, alkalis, organic solvents, and other chemical substances can cause irreversible damage to Bi-Yu, making its surface lose luster or even corroding it.

* Operation Steps: Always remove Bi-Yu when applying makeup, spraying perfume, washing dishes, or conducting experiments. If it comes into contact with chemicals, immediately rinse with clean water and dry.

  • Proper Storage to Avoid Bumps: Although Bi-Yu has a relatively high hardness, it is still susceptible to drops and bumps. Minor bumps can cause scratches on the surface, while severe ones can lead to direct cracking.

* Operation Steps: When not wearing it, store Bi-Yu separately in a soft cloth bag or jewelry box to avoid friction with other hard objects. Multiple pieces of Bi-Yu should also be stored separately to prevent them from colliding with each other.

  • 'Human Nurturing' and 'Playing': This is the highest realm of Bi-Yu maintenance. The oils and sweat secreted by the human body, with appropriate contact, can nourish the jade, making it more warm and lustrous.

* Operation Steps: Wear Bi-Yu frequently and play with it using clean hands. However, make sure your hands are clean and free of grease before playing. Excessive sweat and dirt can, on the contrary, be counterproductive.

Precautions:

* Do Not Use Ultrasonic Cleaners: The vibrations from ultrasonic waves can damage the internal structure of Bi-Yu, especially jade with cracks or flaws, making it more prone to cracking.
* Regular Inspection: When wearing or storing, regularly check the Bi-Yu for looseness, cracks, or bumps, and address any issues promptly.
* Maintain Environmental Humidity: If not worn for an extended period, occasionally wipe the Bi-Yu with a damp cotton cloth to keep its surface moist and prevent it from becoming too dry.

Experience Summary:

Bi-Yu maintenance, ultimately, comes down to patience and meticulousness. It's not a one-time effort but requires continuous care. Every piece of Bi-Yu has its unique vitality; the effort you put into it will be rewarded with a more warm and vibrant appearance. My Russian Bi-Yu bangle, after years of careful nurturing, now possesses a subtle luster and even better oiliness than before. Every time I take it out to admire, I can feel the beauty of time that has settled upon it. I hope these experiences can help everyone's Bi-Yu stay youthful and be passed down through generations.

Remember, jade has spirit; people nurture jade, and jade nurtures people. The secret lies in this continuous care and companionship. May all your treasures shine brightly!