Care & Maintenance
What Is Jade Wax Treatment? Can A-Grade Jadeite Be Waxed?
Many people hear 'wax treatment' and assume it's a form of fraud. In fact, waxing is a traditional jade polishing technique, recognised under national standards as an 'optimisation' that does not need to be declared on a gem certificate.
When buying jadeite, you may have heard a vendor say 'this piece has been waxed' — and immediately wondered: is that fraud? Is it B-grade? In fact, wax treatment and B-grade jadeite are completely different concepts. Here is a clear, standard-based explanation.
What Is Wax Treatment?
Wax treatment (煮蠟, also called 上蠟) is a traditional Chinese jade polishing technique. The principle relies on thermal expansion: when jadeite is heated, microscopic gaps between its crystals expand. The stone is then submerged in molten paraffin wax, which seeps into these gaps. As it cools, the wax fills in tiny surface imperfections, resulting in a smoother, more lustrous finish.
💡 Key point: Wax treatment does not alter jadeite's internal crystal structure, nor does it introduce any chemical agents. It is a purely physical surface treatment.
Why Wax Jadeite? What Does It Do?
- Enhances surface lustre: makes the stone brighter and more visually appealing
- Conceals minor flaws: such as natural 'orange-peel' texture and fine polishing marks
- Protects the stone: the wax layer shields against environmental contamination
- Optimises colour and texture: makes colours appear richer and the feel more velvety
Is Waxed Jadeite A-Grade or B-Grade?
Waxed jadeite is still A-grade. Under Chinese National Standard GB/T 16552, jadeite treatments are classified as either 'optimisation' (優化) or 'treatment' (處理). Waxing falls under 'optimisation' — a traditionally accepted industry practice that does not need to be declared on a gem certificate. B-grade jadeite, by contrast, has been bleached with strong acid and then impregnated with epoxy resin. This is a chemical treatment that destroys the stone's internal structure — an entirely different matter.
| Factor | Wax Treatment (A-Grade) | Resin Impregnation (B-Grade) |
|---|---|---|
| Process | Paraffin wax (physical) | Acid bleach + epoxy resin (chemical) |
| Internal structure | Fully intact | Destroyed |
| National standard | Optimisation — no declaration needed | Treatment — must be declared |
| Durability | Good; wax can be removed | Degrades over time; yellowing |
| Value impact | Negligible | Significantly reduced |
How to Remove the Wax
If you wish to remove the surface wax from your jadeite, soak it in warm water. The wax will soften with heat and can be wiped away with a cloth. For wax residue in carved grooves, use a toothpick or small wooden tool to gently clean it out.
⚠️ Critical warning: Never place cold jadeite directly into hot water. The sudden temperature change can cause the stone to crack. The correct method is to place the jadeite in room-temperature water first, then gradually raise the heat.
Care After Waxing
- After daily wear, gently wipe away perspiration and dirt with a soft cloth
- Avoid contact with strong acids, alkalis, cosmetics, and perfume
- Do not use ultrasonic cleaners (vibration removes the wax layer)
- Rinse periodically with lukewarm water to keep it clean
- Jadeite is said to 'improve with wear' — natural skin oils gradually enhance its lustre
💡 Flora's tip: All jadeite sold by Missing Faye Co. is professionally polished before sale to ensure every piece looks its best. If your jadeite has lost some of its lustre, feel free to WhatsApp us for personalised care advice!
References
- GB/T 16552 — National Standard for Gem Names — Official Chinese national standard definitions for jade optimisation and treatment
- GIA — Jade Quality Factors — GIA explanation of jadeite quality factors