How to Clean S925 Silver Jewelry

About S925 Silver Jewelry

“S925”represents the alloy contain 92.5% pure silver. S925 silver is also can be called sterling silver jewelry. It is well known that sterling silver jewellery will turn black over time, but it is still one of the most  well-loved jewelry on the market today. The purity of silver jewellery can impact the speed of tarnish. That’s mean 950 silver jewelry is easier to turn black. There are many reasons for silver jewelry to tarnish. Now, let us tell you something about sterling silver jewelry.

Although Luster-Jewelry use rhodium metal to coat the outside of S925 silver jewelry, it’s still impossible to prevent silver jewelry from tarnishing and turning black. It’s worth mentioning that rhodium plated silver jewelry can cut down the speed of tarnish. The surface of the silver jewelry will reacts with oxygen or sulfur in the air. The chemical reaction is described as“oxidized”.

In life, you would find some people’s silver jewelry got tarnished, but some people not. Because everyone’s endocrine structure is different, some people’s sweat acid is more, some less, some people of ammonia content is higher, so wear silver produced different results, acid easy to black, no acid is not easy to black, and even some grease is secreted exuberant people can bring their own silver glossy.

The way to clean Silver Jewelry

There are many ways to clean your silver jewel at home. Of course, very old, fragile, or valuable pieces should be cleaned by a professional. In addition, many people use commercial silver cleaner. This is a convenient way to make the silver jewelry shine. But it will get rid of the anti-tarnish coating like rhodium at the same time. Then silver jewelry will be tarnished quickly. So, Luster-Jewelry does not recommend it.

The specific methods are:

  • Clean with toothpaste and soft toothbrush.
  • Apply the lipstick to the cloth to wipe the silver jewelry, then rinse and buff the silver jewelry
  • Put in the Caca Cola about 12 hours
  • Apply the vinegar to the cloth to wipe the sterling silver jewelry
  • Electrolyte Method: aluminum foil to line the bowl, 2 tablespoon each of salt, baking soda, dish soap and 500ml boiling water in it. This process is not appropriate for polished silver jewelry without gemstone such as turquoise, pearls etc.
  • Olive and lemon juice: mix a spoon of lemon juice with about 300ml olive in a vessel. Dip the soft cloth with the solution, and wipe the silver jewelry.

Tips: Silver jewelry can scratch easily. The cloth should be soft, dry and   non-abrasive such as such as microfiber or lint-free flannel.

The Way to Preventing Tarnish

There are many factors that cause the tarnish of silver jewelry in our life. It’s vital to keep your 925 sterling silver jewellery away from the substances. The things that will cause tarnish as follow:

  • The water in the swimming pool (chlorinated water)
  • Exposure under the sun, perspiration
  • Household chemicals, , rubber, latex
  • Food likes mayonnaise, eggs, mustard, onions
  • Beauty products like creams
  • Wool

As a result, keep your jewelry out of the sun if possible! Your S925 silver jewelry isn’t great for lengthy trips without any shade. It’s not suitable to wear silver jewellery when you do housework. If you always wear it, remember to clean it and keep it light.

In addition to timely and regular cleaning, the best way to maintain your silver jewelry is correct storage. Please store your S925 silver jewelry in a cool and dry environment. Use a special polishing cloth or soft cloth like flannel to gently rub the rhodium plated sterling silver jewelry clean after washing. Finally, put it on a plastic bag. In order to avoid scratching, one silver jewelry should be stored in one plastic bag.


Synthetic Sapphire

About Sapphire

The birthstone of September is Sapphire gems. Sapphire is a gemstone, a variety of corundum, a crystalline form of aluminum oxide (AL2O3). The color of corundum can be blue, pink .yellow, orange, green, colorless, etc. The color of the corundum depends on the trace metal like copper, magnesium, iron, chromium, titanium. Corundum of all color is called as sapphire except red sapphire. Red corundum always is known as Ruby. The color of Ruby is pink to blood-red because of the element chromium.

About Synthetic Sapphire

Synthetic sapphire was first found in 1902 by the French chemist Auguste Verneuil.  A synthetic sapphire gems material is one that is made in laboratory, which is the same as natural mineral counterpart in some way like chemical, optical and physical characteristics. Synthetic sapphire have their own quality grade as A, AA, AAA. Synthetic sapphire can come in the shape of oval, round, trillion, square, heart, etc. In addition, some companies, mainly producing synthetic gemstone, can customize the shape and size of synthetic sapphire according to your requirement. As a general rule, synthetic sapphire always more perfect than traditional sapphire because they don’t contain the impurities. Since there is not enough natural sapphire to meet demand, various synthetic gems have appeared in the market over the last few decades. Although there are many colors in synthetic sapphire, blue synthetic sapphire is the most popular. Synthetic sapphire is too similar to identify them. In general, an experienced jeweler can identify them. Sapphire is a rare, valuable and most precious gemstone. If a nice sapphire is too cheap, it must be synthetic.

Process of Producing Synthetics

Synthetic Sapphire is grown in furnaces. Taking Aluminum oxide in the furnace and heating it to about 2050 degrees Centigrade and then cooling it. When it cools it forms a sapphire crystal. There are many process to create sapphire : melt growth, solution growth, extremely high-temperature, high-pressure growth processes, floating zone process, the flux process and the hydrothermal process. With the advancement of science and technology, the method of making synthetic gemstones will become more and more complete. Today, it’s estimated that about 90%-95% of the sapphire in the market are heart-treated.

Use of Synthetic Sapphire

At present, synthetic sapphire is used extensively in sterling silver sapphire jewelry making such as sterling silver sapphire rings, sterling silver sapphire earrings, sterling silver sapphire pendants, sterling silver sapphire bracelets. Affordable price synthetic sapphire jewelry can meet market demand. Synthetic sapphire also can be used in the watch and semi-conductor industries. Sapphire is the second hardest gems in the word. The Mohs scale of sapphire is more than 9, thus being quite scratch resistant. That is why the sapphire used in watches. In the future, it will be used in IPHONE to protect the mobile phone screen.

Properties of Synthetic Sapphire:

Crystal System Hexagonal
Lattice a=4.785Å, C=12.991Å
Density 3.98g-4.10g/cm3
Purity 99.99%
Transmission Range 170-6500nm, >80% in IR range
Melting Point 2040°C
Specific Heat 0.418 W.s/g/K
Thermal Conductivity 25.12 W/m/K
Thermal Shock Resistance 790 W/m
Thermal Expansion Coefficient 5.8×10-6/K
Dielectric Constant 11.5°C (Parallel to the c-axis)

103-1010Hz 25

9.3°C (Perpendicular to the c-axis)

103-1010Hz 25

Hardness 9 Mohs
Refractive Index 1.83 @0.26 m, 1.76 @0.63 m, 1.58 @5.57 m

How to choose good quality human hair and how to identify if it is suitable for you ?

Nowadays, more and more people love to buy human hair to make themselves look more beautiful. Everyone can buy human hair online. However, some people would explain that they wasted money as the hair is tangled or shed what they have received, and some people will think the hair what they bought is not suitable for them.
So it is very important for us to choose the good quality hair and choose the one which is the most suitable for you. Don’t waste money again !
There are some tips for your reference:
1. Classification:
The quality of hair is divided into the following grades: Virgin( top quality ), Remy, non-remy, Synthetic.
Virgin hair is the best quality hair, it looks more natural and it can last for a long time. You can choose this one if you are looking for quality.
Of course, some sellers will state that their hair is 100% virgin human hair. But if the hair will shed or tangle in a short time, then it means that they they may mix some non-remy hairs to it. You can read the “customer reviews” before buying. For wholesalers, you can ask sellers if there is return policy. For sellers, normally they can promise buyers that they will have the right to return or exchange when buyers receive the hair within 7 days and not use it.
2. Use method:
For human hair, There are a variety of hairs for different use methods, including hair bundles, lace closures, wigs, clips in hair extensions, tape in hair extensions, bulk hair, pre bonded hair, micro loop ring, flip in hair extensions (halo hair), etc.
Among of them, hair bundles and wigs are the most popular. Some people also will buy bundles and closures to make a wig by themselves. You can hidden all of your hairs and wear a wig, it will look very awesome.
On the other hand, if you have your own long hair already and you want to make it longer or want something other hair colors and don’t want to dye your own hair, then you can choose tape in hair extensions, pre bonded hair , micro loop ring hair or clip in hair extensions, etc. Among of them, clip in hair extensions is the easiest to wear it. If you want to wear it conveniently, then you can choose this one.
3. Hair Texture:
Hair Textures: Straight, body wave, deep wave, water wave, kinky curly, loose wave, yaki straight, funmi, etc.
Actually you can buy any hair textures you want. Straight and Body Wave is the hot selling. Especially for straight hair, you can restyle to any textures and it is easiest to care for. If you don’t know which hair texture is suitable for you, then choose straight style.
4. Hair color:
In the market, 1b natural black color is the most commonly sold. Along with the market mature and development, you can choose more and more colorful human hair. But the most important thing is: the hair color you choose should be matched with your own hair color, then it won’t look wired.
Buying hair is for the sake of more beauty, you’d better select the hair products carefully before you place an order. Don’t waste money again!
For more details, please contact me freely.
E-mail: sales01@tdhair.com


About Sterling Silver

With the development of economy and technological, sterling silver is always used in giftware, hollowware, flatware. Mainly used in jewelry making . Sterling silver jewelry is cheaper than Karat gold jewelry, so than most of people can afford it. But, most people don’t know sterling silver. Now, let me tell you something about sterling silver and how to distinguish sterling silver, coin silver and silver.

Although, sterling silver, coin silver, pure silver belong to silver item, the mean of them is different. Sterling silver is different from pure silver and coin silver. Coin silver is 90 percent pure silver and the remaining part consists of other metal. Usually, It is copper. Pure silver, referred to as fine silver, has the silver content of 99.9%. Pure silver is too soft to be used in jewelry making and be any other physical object. Therefore, pure silver need to mix with other metal to make it strength and hardness. Sterling silver, called 925 sterling silver in China, is an alloy of at least 92.5% silver and 7.5% other metal add it. The metal used in sterling  silver include zinc, germanium, platinum, silicon, copper and so on.

Most sterling silver is made up with pure silver and copper. Copper can maintain the silvery color of the alloy while improve its durable. Alloying with copper is prone to tarnishing because of the copper is more easily to oxidation and corrosion. At present, there is no way to prevent sterling silver from tarnishing because will react with many things in your life. For example, tap water will prompt sterling silver jewelry turning black because it contains chlorine. If you put the sterling silver jewelry in the desk, the surface of sterling silver jewelry will contact the oxygen then the jewelry will turning black. In addition, all of sterling silver jewelry in Luster-Jewelry is plated with rhodium which is a kind of rare metal. In order to reduce the tarnishing, Luster-Jewelry pays attention to the process of rhodium-plated. It is worth mentioning than sterling silver plated jewelry or silver coating jewel is not real sterling silver jewelry, it could be copper or other metal jewelry.

Sterling silver jewelry is at least 92.5% of pure silver in the alloy. Legally sterling silver jewelry should be stamped with “925”, ”.925”or”92.5.”. A silver jewelry labeled them you buy means genuine sterling silver jewelry. Coin silver is marked with “coin silver”,”coin”,”900”,”.900”,or”90” which mean the piece has at least 90% of pure silver. Pure silver is stamped with “999” means high purity silver. But, the silver jewelry marked the number of 925 don’t really has pure silver content of 92.5% in somewhere. In other words, some fake sterling silver jewelry is sold in the market.

Due to the affordability of sterling silver, jewelry manufacture always put the simulated sapphire or diamond gemstones in it. Sterling silver simulated sapphire jewelry is popular with the people in North America. Sterling silver gemstone jewelry is conducive to the quality of life.

Sterling silver jewelry does not get cheaper. On the contrary, the value increases with time. Apart from pure gold and karat gold, sterling silver jewelry can be worth the investment. Luster-Jewelry sterling silver jewelry is your best choice.


About Synthetic Emerald

Emerald is a kind of green gemstone. It has been treasured as decoration in the form of Emerald jewelry for many years. Expensive natural Emeralds are always embedded in precious metal like pure gold. (24 karat gold) Emerald is an elegant precious gemstone. It is popular with women all over the word. The world’s three major Emerald deposits are mined in Colombia, Brazil, and Zambia. Of course, there are other Emerald mines in the word. For example, the Emerald mines in Pakistan, Afghanistan, Russia, Australia and United States. As a general rule, Colombia Emerald is praised as the best Emerald because of the nice color.  It is more expensive than other Emerald gems. Emerald belongs to the beryl family, It’s chemical formula is  (Be3Al2(SiO3)6). Emerald has a hardness of 7.5-8. 0. This compares favorably to Tanzanite (6.0 to 7.0) but not compares to Sapphire and Ruby (9.0). This Emerald is colored green due to the presence of chromium and vanadium. About optical properties of an Emerald, the color ranges from yellowish green to bluish green, with most Emeralds having a very slightly bluish green color. About Emerald’s weight, Emerald gemstone will larger than Sapphire in one per carat.

And do you know synthetic Emerald? Synthetic Emerald began in the 1930s. Synthetic Emerald can be called created Emerald, lab-created Emerald, artificial Emerald, hydrothermal Emerald. Hydrothermal synthesis is a technique.  The material of synthetic Emerald is the powder of natural Emerald. Hydrothermal synthesis has been used in lab-created Emerald as Russian synthetic Emerald as well as Columbia synthetic Emerald. At present, there are many kinds of synthetic Emerald except Russian Emerald and Colombian Emerald. In addition to hydrothermal synthesis, there are other several methods to create synthetic Emerald. Laboratory-created Emerald, their chemical composition, optical and physical properties is identical to the good quality natural Emerald. Therefore, It’s difficult to distinguish natural Emerald from synthetic Emerald. If you want to find out the Emerald is synthetic or natural Emerald, you should take it to a top laboratory for analyst. Many people can not recognize them. For this reason, you best to left the Emerald in the hand of qualified gemologists . They will tell you the truth.

Emerald jewelry is a good choice for wedding anniversary or birthday present. The Emerald is one of the most popular of precious gemstone, Diamonds, Rubies and Sapphires. However, the price of high-end natural Emerald is too high to afford. The value of a synthetic Emerald is much lower than the natural Emerald. Synthetic Emerald is widely used in sterling silver and karat jewelry making, for instance sterling silver Emerald rings, sterling silver Emerald earrings, sterling silver Emerald bracelet as well as sterling silver Emerald pendants. Synthetic Emerald is cheaper than natural Emerald, but the cost of synthetic Emerald still higher than other lab-created gemstone. Because of synthetic Emerald, more and more people can wear favorite sterling silver Emerald jewelry or Emerald gold jewelry.

The properties between natural Emerald and synthetic Emerald as follow:

Moh’s Hardness Refractive index Chemical Formula Birefringence Specific Gravity Crystal System
Natural Emerald 7.5~8 1.565~1.602 Be3Al2 [SI6o18] 0.005-0.008 2.65~2.70 Hexagonal
Synthetic Emerald 7.5~8 1.570~1.577 Be3Al2 [SI6o18] 0.007 2.7 Hexagonal

More stering silver jewelry,you can visit http://www.luster-jewelry.com/,professional silver & gold jewelry maker from China.