Mücevher haberleri

cheap mens rings Characteristics of Corals

’' te gönderildi Kingjy tarafından

In the warm sea, a group of coral polyps gather together and climb on the rock. The inner polyps gradually die and calcify to form the skeleton of the coral. Fakat, the outer polyps continue to grow and form dendritic corals over time. Polyps are coelenterates on the bottom of the sea, so corals are formed by animals. There are continental shelf areas with a depth of three to three hundred meters. The Pacific and Mediterranean have been the main sources of corals since ancient times. Red corals are the most valuable among corals-there are other pink, white and black corals.

Coral is an organic gemstone formed by animals. The chemical composition is calcium carbonate. It mainly appears in the form of calcite, with a refractive index of 1.486-1.658, a specific gravity of 2.6-2.7, and a hardness of 3-4. It is similar to pearls, and the same as uncut coral. The surface gloss is very poor and can have a glass-like gloss after polishing. Chemical substances such as acids or alkalis can cause great harm to corals and should be avoided as much as possible. It is best not to come into direct contact with human sweat, perfume or cosmetics when wearing them; wipe it clean with a clean soft cloth after wearing to avoid corrosion caused by residual sweat , Can extend the life of corals.

Coral imitations are mostly artificial products with many materials, such as glass, silika jel, gypsum, rubber, vesaire., mixed to imitate corals, but such artificial products are generally very uniform in color and cannot imitate the natural growth structure of corals. , An experienced person can recognize the difference between imitations and natural corals with the naked eye.

Corals that are made into jewellery can be inlaid or independently formed. If it is inlaid with other precious metals, consider the characteristics of precious metals during maintenance. Örneğin, silver will oxidize and turn black, and pure gold will turn white. For the independent formation, the characteristics of the coral itself are mainly considered.

 

OEM/ODM Takı Üreticisi Kendi Mücevherlerinizi Özel Tasarlayın

Başlayalım : mo@kingjy.com

 

Guangzhou Jinging Özel Toptan Halka Kolyelere Odaklanma Bezelyeler Küpe Sterlling Gümüş 925 takı,18k ile kaplanmış gümüş altın,14K,24K sarı altın,Beyaz Altın ve Gül Altın. Gümüş mücevherleri özel olarak kullanabilir Çeşitli Tasarım,lazer gravürünün logo markası veya başka kelimeler müşterinin gereksinimine göre.

Aylık üretim kapasitemiz 50,000 Parça Bilezikler Kolye Küpe Halka Takı.,takı zinciri dükkanı,Outlet Mağazaları,mücevher toptancı,Tüccarlar ve Mücevher Markası Şirketi,Profesyonel, Özelleştirilmiş Mücevherat ve Yüksek Kaliteli Kitle Üretimi Oluşturun 925 Gümüş Takı Servisi.

 

OEM/ODM Takı Üreticisi Kendi Mücevherlerinizi Özel Tasarlayın

Başlayalım : mo@kingjy.com

 

Guangzhou Jinging Özel Toptan Halka Kolyelere Odaklanma Bezelyeler Küpe Sterlling Gümüş 925 takı,18k ile kaplanmış gümüş altın,14K,24K sarı altın,Beyaz Altın ve Gül Altın. Gümüş mücevherleri özel olarak kullanabilir Çeşitli Tasarım,lazer gravürünün logo markası veya başka kelimeler müşterinin gereksinimine göre.

Aylık üretim kapasitemiz 50,000 Parça Bilezikler Kolye Küpe Halka Takı.,takı zinciri dükkanı,Outlet Mağazaları,mücevher toptancı,Tüccarlar ve Mücevher Markası Şirketi,Profesyonel, Özelleştirilmiş Mücevherat ve Yüksek Kaliteli Kitle Üretimi Oluşturun 925 Gümüş Takı Servisi.