1. Freshwater Pearls
   • Primarily cultured in lakes and rivers, mostly produced by freshwater mussels.
   • Come in a wide range of sizes, with diverse shapes and rich color variations.
   • Mostly non-beaded or cultured with tiny nuclei, offering high nacre thickness and excellent value for money.
   • Common colors include soft pastel shades like white, pink, peach, and lavender.
   
   
2. Akoya Pearls
   • Produced by saltwater oysters, mainly in Japan and China.
   • Highly spherical in shape, ranging from 5–9 mm in size, with an extraordinarily fine, mirror-like luster.
   • Primary colors are white and cream, often featuring pink or silver overtones.
   • Frequently used in traditional bridal jewellery and classic diamond-accented pearl necklaces.
   
   
3. Tahitian Pearls
   • Cultured in black-lip oysters (Pinctada margaritifera) in French Polynesia and other regions; they are saltwater pearls.
   • Famous for being "black pearls," though their actual bodycolors range from dark gray and peacock green to blue-violet.
   • Larger in size, typically between 8–14 mm, exuding a bold and distinctive personality.
   
   
4. South Sea Pearls
   • Produced by gold-lip and silver-lip oysters (Pinctada maxima), mainly sourced from Australia, Indonesia, and the Philippines.
   • Generally large in size, reaching 9–16 mm or even larger.
   • Renowned for their golden and silver-white hues, possessing a soft, thick luster, and belonging to the top-tier high-price category.

Among these four major pearl types, Akoya, Tahitian, and South Sea pearls are all saltwater pearls. Due to higher cultivation difficulty, their prices are generally higher than freshwater pearls—marking the primary difference between saltwater and freshwater pearls.

• Affordable price: Compared to Akoya or South Sea pearls, freshwater pearls of similar size are more modestly priced, making them ideal for everyday pearl bracelets or earrings.
• Abundant color choices: Pastel freshwater pearls (pink, lavender, peach) seamlessly match daily outfits, enhancing your overall style even with simple attire.
• High design versatility: Freshwater pearl bracelets on the market often blend gold beads, colorful gemstones, or metal chains, effortlessly suiting both casual and professional attire.

• Mollusk Species → Size & Color Variations:
  Black-lip oysters can nurture larger Tahitian pearls, yielding bigger finished gems; gold-lip oysters are more likely to produce golden South Sea pearls.

• Aquatic Environment ➔ Nacre Quality & Luster:
  Water salinity, temperature, and farming techniques affect the delicacy of nacre deposition; the finer and more translucent the nacre layers, the superior the luster performance.

• Freshwater vs. Saltwater ➔ Price Structure:
  A single freshwater mussel can produce multiple pearls, resulting in relatively lower production costs. Saltwater oysters typically yield only one pearl per shell, carrying higher farming risks and costs, which are reflected in final retail prices.

• Round (Spherical): The most popular in traditional markets and the hardest shape to cultivate, thus usually commanding the highest price.
• Near-Round, Oval, Drop: Ideal for earrings, pendants, pearl necklaces, or bracelets, priced slightly lower than round pearls.
• Baroque (Irregular): Possesses a unique and artistic form; pricing depends on overall aesthetic appeal and design rather than strict uniformity.

• Slightly smaller size, but with exceptional luster and a clean surface.
• Larger size, but with minor blemishes or slightly softer luster.
• Very rare color, but with slight natural surface textures.

• Daily Wear vs. Collection/Investment
• Daily Wear: Prioritize overall aesthetic appeal, durability, and comfort (e.g., freshwater pearl bracelets). If the luster is bright and blemishes are inconspicuous, it is good to go.
• Collection or High-End Events: Stricter standards can be applied toward size, shape perfection, and matching consistency.
• Budget Priority vs. Visual Impact Priority
  On a limited budget, prioritize superior luster and surface quality; a smaller, radiant pearl is far more practical than a large, dull, heavily scratched one.
• Single Pearl Jewellery vs. Stranded Pearl Bracelets / Necklaces:
  For a single ring or pendant, focus on individual pearl quality. For stranded bracelets or pearl necklaces, overall matching determines the value.

• Bodycolor: The dominant overall color observed when looking directly at the pearl (e.g., white, cream, black, gold, pink).
• Overtone: One or more translucent colors overlying a pearl's bodycolor like a delicate filter, commonly pink, silver, or green.
• Orient: The iridescent, rainbow-like shimmer caused by light refraction and interference within thick, finely structured nacre layers.

• Bleaching: Widely used on white pearls to achieve uniform color and remove yellowish tones.
• Dyeing: Imparting black, blue, or green hues onto lighter pearls to boost visual diversity.
• Heat/Color Modification: Adjusting bodycolor or overtone via thermal or chemical methods.

• Request transparent disclosure from sellers regarding any treatments, ensuring it is stated on sales documentation.
• Understand that naturally colored pearls (especially rare shades) are far more favored in collector markets, offering better value retention and higher prices.
• Dyed or heavily treated pearls may fade or suffer color instability over time, reducing their resale value compared to natural-color pearls.

1. Basic Specifications: Pearl type (freshwater/saltwater), clear explanation of saltwater vs. freshwater differences, size range (mm), shape classification (round/near-round/baroque).
2. Color & Luster: Is the color description accurate? Is the luster sharp and deep rather than hazy? Are specific overtone s clearly documented?
3. Surface & Nacre Quality: Are there obvious pits or scratches under eye inspection? For saltwater pearls, is information on grading or nacre thickness provided?
4. Construction & Findings: What stringing material is used (elastic cord vs. specialized silk thread)? Are there protective knots between individual pearls? What material is used for the clasp? Is matching uniform?
5. Certification & After-Sales: Does it come with a third-party grading report (e.g., GIA pearl report) or brand guarantee? Are treatments clearly declared? Do they offer restringing, cleaning, and repair services?

• Applying perfume after putting on pearls: Perfumes, hairsprays, and cosmetics contain chemicals that gradually erode nacre. Rule of thumb: Complete your makeup, hair, and perfume first; put on your pearl necklace or bracelet last.
• Wearing pearls while bathing, swimming, or in hot springs: Shampoos, body washes, chlorine, and minerals in thermal waters harm the nacre layer. Prolonged soaking also weakens stringing threads. Remove all pearl jewellery before showering or swimming.
• Tossing pearls together with hard gemstones: Storing pearls alongside diamond rings or metal bracelets causes friction and surface scratches. Store them separately in soft pouches or compartmentalized jewellery boxes.
• Neglecting thread replacement: Pearl necklaces and bracelets worn frequently can suffer string degradation over the years. Unreplaced aging threads risk snapping, scattering pearls everywhere.
• Using improper cleaning methods: Avoid silver dips, household detergents, or ultrasonic cleaners, which strip or erode the nacre surface. Daily cleaning requires only a soft cloth wipe and a quick rinse with clean water if necessary.