Coin silver was once a more common alloy in the United States. It is now fairly rare and the name causes quite a bit of confusion. The technical “coin silver” alloy is .900 เงิน, หรือ 90% เงินและ 10% ทองแดง. ชื่อ “coin silver” is because metalsmiths historically made items from melted down scrap […]
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โลหะผสมที่ไม่ได้ถูกแหนบ. Argentium เป็นแบรนด์เดียว แต่มีอีกชุดที่คล้ายกัน. โลหะผสมเหล่านี้มีน้อยที่สุด 92.5% เงินแม้ว่าบางส่วนจะสูงขึ้นเล็กน้อยในปริมาณเงิน. ส่วนที่เหลือประกอบด้วยทองแดงและการเพิ่มองค์ประกอบเจอร์เมเนียม. เจอร์เมเนียมสร้างโลหะผสม […]
Sterling is the jewelry quality standard in the United States and most world markets. It is an alloy of 92.5% เงิน. ส่วนที่เหลือ 7.5% is usually copper though it is sometimes other metals such as nickel. The other metals in the alloy increase hardness so the material will be more durable. Alloy additions also […]
1. Fine .999 Silver Fine silver is the closest metal to the pure element silver. It is marked .999 which indicates 99.9% ความบริสุทธิ์. ที่ 0.1% remainder consists of trace elements of insignificant quantity. Fine silver has a more vitreous luster than the bright polish of sterling. It appears grayer and slightly dull. This type […]
The reason sterling silver requires the mixture of other metals is because naturally, pure silver is soft. Adding other metals to the silver increases the hardness, making it more suitable and durable for use in jewelry and housewares like silverware. The result of this process also produces that signature silver color: สว่าง, shiny and […]
You might be wondering what is sterling silver? Sterling silver is an alloy made from 92.5 เปอร์เซ็นต์เงินและ 7.5 percent alloy. An alloy is essentially the mixture of two (or more) elements taken from the periodic table. Regarding sterling silver, the alloys can include zinc, copper or nickel. While the United States, ยุโรป […]
#1. Rub the jewelry using a soft white cloth. If you find any black marks on the cloth, then you can be sure that it is made of real sterling silver. This is because any air exposure causes real sterling silver to oxidize. This causes them to deteriorate with time, and the reason why […]
You could imagine very easily that if there’s a 20% price jump from a 0.99ct diamond to a 1.00ct diamond, the cutter who loses that 0.01ct trying to make a prettier stone will lose his job. Perhaps with the nicer cut it will only be worth 15% less instead of 20%, but either way, […]
I stress categories, because you might mistakenly believe that prices per carat increase continuously as weight is increased, but this is not the case. Since diamonds are a retail product driven more by emotion than reason, a 0.99ct diamond is worth only about 1% more than a similar diamond weighing 0.98ct. But a 1.00ct […]
Diamonds are all priced per carat. Lets say a 0.50 carat diamond has a price of $1400 ต่อกะรัต. That diamond’s price for the stone would be $1400 * 0.50, หรือ $700. Or, let’s say that a 1 carat diamond has a price of $4,100 ต่อกะรัต. This one is easy to calculate — […]