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Metal Education

INTRODUCTION

Precious metals

Have been the centrepiece for adornments throughout history. Silver and Gold have been admired as jewellery and décor. While Gold takes the spotlight, silver, platinum, palladium are quite popular as well. The history of Gold finds its link to money which in course of time was replaced by currency, as we know of today; the Gold Standard was fixed that determined the value of their currencies in terms of a specified amount of gold.

GOLD

The word ‘gold’ comes from the Old English word “geolu” which means yellow. From the very
beginning gold attracted civilizations all over the world. It has been treasured as an
object of desire and beauty. Due to its golden color it often played an important
三分快三 role in Mythology and is considered a prized possession till date.

GOLD FACTS

* 49% of the total gold mined is used in manufacture of jewellery, rest being used for industrial purposes. 187,200 tonnes of
三分快三 gold has already been mined and yet it is believed that 80% of the total gold in the world still remains unearthed.

* Yellow is the most popular color in gold, even though gold is available in a diverse palette. The use of alloys with 24 karat
三分快三 gold makes it more durable, as gold’s malleability makes it very soft, this alloying practice is also used to change its color.

* 24 karat is pure malleable gold and is not used in jewellery. While 22 karat and 18 karat is most commonly used in
三分快三 India, 14 karat, 10 karat and even 9 karat is used in European and other countries.

* Every price of jewellery is stamped with its purity, hallmarking logo, brand name and year of hallmarking, which enables
the customer to exchange or sell the product later and also for the jeweller as it helps them recognize their manufacturing.

* Hallmarking ensures that the product in question is manufactured in the exact karat weight that it claims to be made of.
三分快三 The alloys used commonly to change the caratage and color of gold are copper, nickel, silver, zinc, palladium and manganese.

WHAT JEWELLERY HALLMARKING DENOTES

SHADES OF GOLD

三分快三Differently colored gold is as pure and real as its yellow counterparts. Pure gold being too sof for jewellery is mixed with alloys to gives it the durability it requires. Each metal color lends its color turning its original color to various shades of white, pink, red, green and the like. Nickel and silver are used for white gold, while copper is used for pink and silver for green. The shades of yellow gold can also vary with the alloys used for its various karat weights. The figure shows the various color palettes of gold.

White Gold

White gold first came to popularity in the 1920’s. The gaining popularity of Platinum as the preferred metal for engagement rings brought in the demand for white gold. Not only did the affordability of white gold increase its demand, the similarity in color made it impossible to distinguish between the two. It lost importance over the years, but gained popularity again in the 21st century and is now the most popular choice for engagement and wedding rings.

White Gold FACTS

* White gold is a mix of alloys like nickel, palladium, silver and zinc with yellow gold that gives it its white color. The minimum karat weight
三分快三 for white gold is 18k as above this it will not impart its white color, white gold in general is a bit yellowish and so it has to be covered in a layer of rhodium.

* White gold karat weight is measured the same way as that of yellow gold, i.e. in both cases 18k would mean 75% gold. It is only the color of
三分快三 the alloys that make a difference.

* White gold is the most selling metal after yellow gold, as it is the most popular choice for engagement rings around the world.

* A diamond from colorless to light brown color may look better on white gold than diamonds with a yellow tint as the yellow
shade is clearly visible against white gold through the naked eye.

ENGAGEMENT RINGS

White gold is by far the most popular precious metal for engagement rings.
The lustre and elegance of white gold color makes it a favourite for diamond settings,
三分快三 as does its price difference to platinum.

Rose Gold

Rose first came to popularity in Russia in the 19th Century and so it is often referred to as “Russian Gold”.
Rose gold is a mixture of yellow gold with copper and silver, copper lending it the reddish tint,
三分快三 therefore there is no such thing as pure rose gold as it cannot be made without use of alloys.

Rose Gold

三分快三* Rose Gold, Pink Gold and Red Gold are a few varieties of rose gold, the names differ due to the difference in color intensity.

* The more copper used in the mix the more intense the color is, and the less is the purity, for e.g. 18k rose gold will have
higher purity than 10k rose gold.

* Rose gold is more durable than yellow or white gold, but less than platinum and does not necessarily require rhodium
三分快三 as its color is quite naturally pink.

Rose hues

Rose gold, red gold, pink gold all belong to the same family and has gained huge popularity as the ideal
gold color for gifting jewellery, proposals, Valentine’s Day, anniversaries etc. Owing to its color, pink gold
also complements every skin tone, unlike white gold, which has turned it into the most desirable
三分快三 color amongst the generation today.

platinum

Platinum is the rarest and heaviest of metals. All of the world’s platinum could fit into a average
sized swimming pool, as a result it is more expensive than gold. The color of platinum is greyish-white
resembles palladium and white gold closely, however, like white gold requires rhodium coating,
platinum requires none.

PLATINUM FACTS

*80% off platinum mined in the world comes from South Africa. Two more deposits are in Columbia and Russia.

三分快三* Platinum can resist corrosion as a result on scratching and erosion there is no loss of metal, the metal is just displaced.

*The melting point of platinum is 1.769°C, and its density is 11% more than gold and about twice the density of silver.

wedding bands

Platinum being one of the rarest of metals is considered an epitome of everlasting love and purity;
as it exists in its pure form and is not mixed with any other alloy to form jewellery. Wedding bands
三分快三 are the most famous type of jewellery associated with platinum.

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