Necklaces are a variety of jewelry with unique design styles and styles that can meet the aesthetic and style needs of different people. Here are some common necklace design styles and styles:

Design style: 1. Modern style: Modern necklaces usually emphasize simple, minimalist design. They may feature geometric shapes, asymmetrical designs, or abstract elements for a modern and stylish feel.

2. Classical style: Classical necklace designs are often inspired by historical periods, such as the Renaissance, Baroque, or Victorian era. These necklaces may include intricate patterns, engravings, and gemstones for a classic and elegant feel.

3. Vintage style: Vintage necklaces tend to imitate fashion styles from the past, such as 20th-century vintage styles. They may include nostalgic elements such as vintage colors, pocket watch pendants, or pop art styles.

4. Ethnic style: Ethnic necklaces are inspired by various cultures and ethnic groups. They can include traditional elements from different regions, such as jewelry from India, and beads from Africa.

5. Art Style: Art necklaces may be influenced by art movements such as abstraction, Van Gogh's Impressionism style, or Picasso's Cubism. These necklaces are often uniquely artistic and creative.

Shape:

1. Pendant Necklace: A pendant necklace is a common style in which a pendant hangs from a chain. Pendants can be in various shapes, such as hearts, stars, animals, letters, etc., and usually represent a specific meaning or symbol.

2. Chain necklace: The focus of the chain necklace is the chain itself, usually a metal chain, which can be thin, a thick chain, a multi-layer chain, etc. Chain necklaces emphasize simple and classic design.

3. Multi-layer necklace: A multi-layer necklace consists of multiple chains layered together to create a layered look. This style often adds sophistication and style and can be mixed with different materials and lengths.

4. Jewelry necklaces: Jewelry necklaces have gemstones or pearls as the main element and are usually used for formal occasions. These necklaces may include diamond necklaces, emerald necklaces, pearl necklaces, etc.

5. Necklace Set: A necklace set usually includes a necklace and matching earrings or bracelets to create a complete accessory combo.

Proper cleaning and care can help extend the life of your necklace, regardless of the material it is made of or whether it contains gemstones. The following are some common necklace care tips and care requirements for specific materials and gemstones:

General tips for cleaning necklaces:

1. Daily cleaning: Avoid deposits of sweat, grease, perfume, and other substances. Before wearing, you can wipe the necklace with a soft, dry cloth to remove surface dirt.

2. Regular cleaning: Clean the necklace regularly according to the frequency of wearing it. Using mild soapy water, soak the necklace for a few minutes, then gently scrub with a soft brush, especially on the chain and pendant details.

3. Mild water: Use warm water when cleaning and avoid using overheated water as some materials may be sensitive to high temperatures.

4. Avoid chemicals: Avoid exposing the necklace to chemicals such as bleach, ammonia, or alcohol. These chemicals can damage materials and gemstones.

5. Drying and storage: After cleaning, gently dry the necklace with a soft dry cloth and make sure it is completely dry before storing. When storing, it is best to place the necklace in a jewelry box away from sunlight and moisture.

Care requirements for specific materials and stones:

1. Gold Necklace: Gold necklaces are relatively sturdy, but they also require regular cleaning to remove dirt. Use mild soapy water and a soft brush to clean, then wipe dry with a dry cloth. Avoid storing gold necklaces with hard objects to prevent scratches.

2. Silver Necklace: Silver will oxidize and turn black, so wipe your silver necklace regularly to maintain its luster. Use silver jewelry cleaner or soapy water to clean, then wipe with a silver cloth. Avoid contact with hydrogen sulfide, which can cause silver to blacken.

3. Pearl necklace: Pearls are sensitive to chemicals and acids, so avoid contact with perfumes, cosmetics, etc. When cleaning, use only warm water and a soft cloth, do not use any chemical cleaners.

No matter what material your necklace is made of, regular cleaning and proper care are key to maintaining its appearance and value. Depending on the necklace's material and stone, proper care will help prolong its life and maintain its beauty.

If you have questions about how to care for a particular necklace, it's best to seek advice from a jewelry expert or manufacturer.