The main component of cassiterite is tin oxide, which is an oxide mineral, often containing trace elements such as iron, niobium, tantalum, titanium and manganese. Cassiterite is a tetragonal crystal system. The crystals are often short columnar, slender columnar or double cone-shaped, and the conical aggregates are block, granular or kidney-shaped; with diamond luster to semi-diamond luster, transparent to translucent, hardness 6.0 ~ 7.0; pure ones are white or colorless, but because they contain a variety of trace metal elements, they also have a variety of colors, generally brown, yellow and reddish brown, black when iron content is high, and pitch with high niobium and tantalum content black. Cassiterite also has the characteristics of high specific gravity, high hardness, strong dispersion (higher than diamond), incomplete cleavage, no characteristic inclusions, acid resistance and other characteristics, so those with high quality enter the ranks of gems.
The sparkle and dispersion of pure and transparent cassiterite crystals are quite charming. It is a very charming gemstone. Only this high-quality cassiterite body can be processed and polished into a standard round diamond facet stone, and it can be used as a substitute for diamonds. Instead of colored diamonds, it is also easy to be confused with diamonds, brown zircon and sphene, but because cassiterite has a higher specific gravity and significant dichroism, it is not difficult to distinguish from the above-mentioned similar gems. It’s just that this kind of high-quality gem-grade cassiterite and its inlays are rarely seen and the price is quite high. Apart from a small amount of cassiterite used to make gems and ornamental stones or collections, it is mainly used in industry. The tin content of cassiterite is as high as 78%, and it is an important mineral for refining tin, which is more valuable than it as a gem. In industry, tin can be used to make white iron, tin tubes, tin foil, various alloys and electroplating parts, and its oxide can be used to make dyes, enamels, porcelain and glass.
Cassiterite deposits are closely related to acid granite magmatism. Among them, cassiterite quartz veins and cassiterite sulfur deposits are the most valuable, often coexisting with fluorite, quartz, tourmaline, and apatite, and are also enriched in placers. The main producing areas of cassiterite in the world are Malaysia, Bolivia, the United States, Germany, Australia, Namibia, Brazil and China. Gem grade cassiterite is mainly produced in Bolivia. Tin ore is one of China’s high-quality minerals. The most famous producing areas are Dachang, Guangxi and Gejiu, Yunnan, but few have reached gem level. In 1981, a columnar, light pink brown transparent cassiterite crystal weighing 19.5 carats was found in the placer around the South China Tin Mine, indicating that China also contains this gem resource.
OEM/ODM jewelry manufacturer design custom your own jewelry
LET’S GET STARTED : mo@kingjy.com
GuangZhou JingYing focus on custom wholesale ring necklaces bracelets earrings sterling silver 925 jewelry,sterling silver gold plated with 18K,14K,24K yellow gold,white gold and rose gold.It is able to custom sterling silver jewelry various design,logo brand or other words by laser engraving according to the customer’s requirement.
Our monthly production capacity is up to 50,000 piece bracelets necklace earrings ring jewelry.JingYing entering into a partnership with supermarkets,jewelry chain shop,outlet stores,jewelry wholesaler,traders and jewelry brand company,professional provide create customized jewelry and mass production of high quality 925 sterling silver jewelry service.
JingYing custom made silver earrings jewelry manufacturer production process
The reasons of quality guarantee of JINGYING jewelry
1. Original Designning
It begins when you bring us a design idea or sample changed ,we start original design by sketch as your request. Custom necklace manufacturer
2.Creating 3D Mold
No matter if this is a simple sketch or a full prototype, we are the Experienced and mature design team help you working on bringing it to life as a fully realized piece of jewelry.Custom 925 silver bracelet.
3.Creating Mold ( Metal Master)
We use CNC machining machine carving jewelry model ensure our jewelry goods 100% high quality sterling silver jewelry same as fine jewelry surface smooth and no lost stone .Custom earrings sterling silver manufacturer
4.Casting
Inject wax mold become plaster mold ,after High temperature heating got jewelry metal goods base. Custom made ring silver jewelry
5. Molding & Polish
Modeling jewelry goods more beautiful ,surface smooth. Custom made silver jewelry manufacturer
6. Hand Setting Gemstone
We use Micro-inlaid machine imported from Japan do setting for 5A CZ stones ,can be 99% no lost stone wax setting technology . Custom made men silver jewelry
7. Plating
We do 2-time plating for all 925 sterling silver jewelry ,first do thick silver plating by base ,double posh make sure surface smooth then go on with the real gold plating ,thickness up to 3 microns ensure can last 1years time ,we call it vermail .
8. Perfect QC Process
Quality checking is the most important process in the whole production line .we have a 10-engineer team to do quality checking control by each process .
No lost stone -1,we will use professional steel needle to beat stone one by one ,make sure no fall out .2,we will drop jewelry items at 3 meters to check the stone no fall out .
Plating- 1,customer can get the report from the machine test about the plating thickness make sure get your standard .2,we use professional tools ,manually rub the metal surface for five minutes ,ensure the coat quality is good . Custom wholesale sterling silver
9. Packaging & Shipping
Independent packaging ,or as per customer request；Express delivery by DHL ,UPS,TT
JingYing custom made silver earrings jewelry manufacturer 925 Sterling silver Manufacturer Advantage
1:20-year senior high end 925 sterling silver custom wholesale jewelry maunfacturer
2:Ten of thousands fashion jewelry customized production experience ,monthly production capacity up to 100000 pieces
3: Exquisite workmanship ,surfface smooth.
4:Efficient production,7-day sample time ,30-day mass production time
5:Quality products,does not change color, does not drop the stone, if has the product quality question in non-human reason, guaranteed 3-6 months for repair.
In the past 20 years, JingYing Jewelry has been following the aim of pursuing perfection and improving on the 925 silver jewelry technology.Our design team keeps learning and improving skill ,design fashionable, romantic accessories for feminine.Relying on exquisite design process and excellent quality, JingYing Jewelry has won the familiar and recognition of chain brands at home and abroad.
Occasion:Modern jewelry manufacture wholesale women’s jewelry custom for party and daily trendy jewelry rings for women
Jewelry custom made silver earrings jewelry manufacturer Quality Assurance :
Your jewerly designs and goods must be took pictures before shipment .check your order whether have problem .
Whatever you have any problem with custom jewerly design or mass order once you get the goods ,contact with us (mo@kingjy.com) ,can get refund if quality problems ,do business with us is in safe .
OEM/ODM jewelry manufacturer design custom your own jewelry
LET’S GET STARTED : mo@kingjy.com
GuangZhou JingYing focus on custom wholesale ring necklaces bracelets earrings sterling silver 925 jewelry,sterling silver gold plated with 18K,14K,24K yellow gold,white gold and rose gold.It is able to custom sterling silver jewelry various design,logo brand or other words by laser engraving according to the customer’s requirement.
Our monthly production capacity is up to 50,000 piece bracelets necklace earrings ring jewelry.JingYing entering into a partnership with supermarkets,jewelry chain shop,outlet stores,jewelry wholesaler,traders and jewelry brand company,professional provide create customized jewelry and mass production of high quality 925 sterling silver jewelry service.
JingYing custom made silver earrings jewelry manufacturer production process
The reasons of quality guarantee of JINGYING jewelry
1. Original Designning
It begins when you bring us a design idea or sample changed ,we start original design by sketch as your request. Custom necklace manufacturer
2.Creating 3D Mold
No matter if this is a simple sketch or a full prototype, we are the Experienced and mature design team help you working on bringing it to life as a fully realized piece of jewelry.Custom 925 silver bracelet.
3.Creating Mold ( Metal Master)
We use CNC machining machine carving jewelry model ensure our jewelry goods 100% high quality sterling silver jewelry same as fine jewelry surface smooth and no lost stone .Custom earrings sterling silver manufacturer
4.Casting
Inject wax mold become plaster mold ,after High temperature heating got jewelry metal goods base. Custom made ring silver jewelry
5. Molding & Polish
Modeling jewelry goods more beautiful ,surface smooth. Custom made silver jewelry manufacturer
6. Hand Setting Gemstone
We use Micro-inlaid machine imported from Japan do setting for 5A CZ stones ,can be 99% no lost stone wax setting technology . Custom made men silver jewelry
7. Plating
We do 2-time plating for all 925 sterling silver jewelry ,first do thick silver plating by base ,double posh make sure surface smooth then go on with the real gold plating ,thickness up to 3 microns ensure can last 1years time ,we call it vermail .
8. Perfect QC Process
Quality checking is the most important process in the whole production line .we have a 10-engineer team to do quality checking control by each process .
No lost stone -1,we will use professional steel needle to beat stone one by one ,make sure no fall out .2,we will drop jewelry items at 3 meters to check the stone no fall out .
Plating- 1,customer can get the report from the machine test about the plating thickness make sure get your standard .2,we use professional tools ,manually rub the metal surface for five minutes ,ensure the coat quality is good . Custom wholesale sterling silver
9. Packaging & Shipping
Independent packaging ,or as per customer request；Express delivery by DHL ,UPS,TT
JingYing custom made silver earrings jewelry manufacturer 925 Sterling silver Manufacturer Advantage
1:20-year senior high end 925 sterling silver custom wholesale jewelry maunfacturer
2:Ten of thousands fashion jewelry customized production experience ,monthly production capacity up to 100000 pieces
3: Exquisite workmanship ,surfface smooth.
4:Efficient production,7-day sample time ,30-day mass production time
5:Quality products,does not change color, does not drop the stone, if has the product quality question in non-human reason, guaranteed 3-6 months for repair.
In the past 20 years, JingYing Jewelry has been following the aim of pursuing perfection and improving on the 925 silver jewelry technology.Our design team keeps learning and improving skill ,design fashionable, romantic accessories for feminine.Relying on exquisite design process and excellent quality, JingYing Jewelry has won the familiar and recognition of chain brands at home and abroad.
Occasion:Modern jewelry manufacture wholesale women’s jewelry custom for party and daily trendy jewelry rings for women
Jewelry custom made silver earrings jewelry manufacturer Quality Assurance :
Your jewerly designs and goods must be took pictures before shipment .check your order whether have problem .
Whatever you have any problem with custom jewerly design or mass order once you get the goods ,contact with us (mo@kingjy.com) ,can get refund if quality problems ,do business with us is in safe .