Frequently Asked Questions

No — 'better' depends on market preference and quality factors. Jadeite can command extreme prices when fine (especially Imperial Green), but nephrite has its own premium categories. Hetian 'mutton fat' white nephrite from China commands prices comparable to fine jadeite. New Zealand pounamu is culturally priceless to Māori communities. Value is always determined by colour quality, translucency, texture, and cultural significance — not just species.

Fei Cui is a regulated term, particularly in Hong Kong trade and consumer-protection standards. It refers to granular-to-fibrous polycrystalline aggregates composed solely or principally of jadeite, omphacite, and/or kosmochlor. 'Natural' Fei Cui means the material has not been subjected to treatment altering its crystalline structure or original colour. The term is broader than 'jadeite' alone — it includes omphacite jade and kosmochlor jade. When you see 'Fei Cui' on a lab report, it confirms the stone belongs to this pyroxene jade family.

Imperial Green jadeite is the most valued colour — a vivid, saturated, evenly distributed emerald green. However, value depends on the combination of colour with translucency and texture. Lavender jadeite has gained tremendous popularity, especially among younger collectors. White/ice jade with high transparency commands premium prices. For nephrite, Hetian 'mutton fat' white is the most prized. Black jade ('ink jade') and yellow/honey jade also have dedicated collector markets. The key factors are saturation (vividness), distribution (evenness), and tone (depth of colour).

No — not for significant purchases. Treatment detection often requires spectroscopy (FTIR for polymer, Raman for mineral ID) and expert review that cannot be replicated by eye alone. Even experienced dealers can be deceived by well-executed treatments. Visual cues can mislead: brown staining does not guarantee 'untreated' because treated stones can be re-stained then impregnated. Always demand a certificate from a recognised laboratory (GIA, HKJSL, SSEF, NGI) with explicit treatment declaration.

Type B jade typically begins to deteriorate within 5-10 years as the polymer impregnation breaks down. Signs include yellowing, cloudiness, surface 'sweating,' and cracking of the resin fill. Exposure to heat, UV light, and chemicals (perfume, household cleaners) accelerates degradation. This is why Type B jade is not considered investment-grade — even if it looks beautiful initially, it is a depreciating material. Type A (natural) jade, by contrast, is stable indefinitely with proper care.

Unlike diamonds or most coloured gemstones, jade value concentrates in colour, translucency, and texture rather than mass alone. A small piece of vivid Imperial Green with high translucency can be worth far more than a large piece of pale, opaque material. Additionally, jade items (bangles, carvings, cabochons) are valued for their form, proportions, and artistic quality — factors that don't correlate with weight. This is why reputable sellers price jade by the piece, considering all quality factors together.

Major trusted laboratories for jade identification and certification include: GIA (Gemological Institute of America) — global recognition, extensive jade research. HKJSL (Hong Kong Jade & Stone Laboratory) — specialises in jade and Fei Cui testing. SSEF (Swiss Gemmological Institute) — published casework on treated jade, jadeite/omphacite studies. Gübelin Gem Lab — independent lab for identity, authenticity, and treatments. NGI (Nan Yang Gemological Institute, Singapore) — handles substantial jadeite testing demand, uses FTIR, Raman, and other advanced instruments. Always verify that the lab report includes explicit treatment declaration and a verifiable certificate number.

Because jade is a heterogeneous aggregate, not a single crystal. Mineral admixtures shift properties — a piece may contain varying proportions of jadeite, omphacite, albite, or other minerals, each with different RI and SG values. GIA documented cases where stones tested as jadeite by classic methods (~1.66 RI) but were confirmed as omphacite by Raman spectroscopy. Similarly, SG can vary depending on mineral composition. This is why borderline results should always be confirmed by laboratory spectroscopy (Raman and/or FTIR).

The hot needle (thermal reaction) test is NOT recommended for valuable items. While GIA reports that polymer-impregnated jade can melt, smoke, or produce a plastic odour under a heated probe, the test has significant potential for damage to the stone. For consumer education, this should be considered a 'do-not-do' test on any item of value. Instead, rely on non-destructive testing (UV, magnification, spectroscopy) and professional laboratory analysis (FTIR) for treatment detection.

Jade has more simulants than most gems — common ones include serpentine/bowenite (RI ~1.56, SG ~2.6), aventurine quartz ('Indian jade,' RI ~1.54, SG ~2.65), prehnite, pectolite, talc/steatite, vesuvianite, and glass. Key separators: (1) RI measurement — jade families have distinctive ranges that differ from simulants. (2) SG by hydrostatic weighing — again, distinctive ranges. (3) Polariscope — jade shows aggregate optical behaviour. However, these tests have overlaps, and for certain purchases, laboratory confirmation (Raman/FTIR) is the only definitive method. Never rely on colour alone — many green stones look like jade.

Genuine 'ethical jade' requires three things: (1) Identity and treatment transparency — a lab report confirming exactly what the material is and whether it has been treated. (2) Documented chain-of-custody evidence — records showing where the jade was sourced and how it moved through the supply chain. (3) Jurisdiction-aware compliance checks — screening for sanctions (particularly relevant for Myanmar-origin jade), import regulations, and consumer protection laws. Be cautious of vague 'ethical' marketing claims without supporting documentation. The OECD Due Diligence Guidance provides the internationally recognised framework for responsible mineral sourcing.

Yes. The US Treasury has sanctioned Myanmar-linked gemstone entities (including Myanma Gems Enterprise) as part of broader Myanmar sanctions programmes. The EU has likewise designated MGE. Any jade with claimed Myanmar origin should trigger compliance screening for businesses and individual buyers operating in sanction-sensitive jurisdictions. This does not mean all Myanmar jade is illegal to own, but it does mean due diligence is essential. Consult current sanctions lists and seek legal advice if purchasing jade with claimed Myanmar provenance for commercial purposes.