750 gold: Jewelry with 18 carat

750 gold is the classic alloy for high-quality gold jewelry. Because pure gold is too soft as a material for jewelry production, it is always alloyed with other metals by the goldsmith. Unlike gold bars or investment gold coins, jewelry therefore always consists of an alloy, i.e. a mixture of different metals that are melted together. The added metals are intended to make the gold jewelry harder, more dimensionally stable and more scratch-resistant.

The proportion of pure gold in an alloy can be given in parts per thousand or in carats. Both units describe the same thing and can be converted accordingly. The fineness of 750‰ thousand parts corresponds to a carat number of 18 carats.

750 jewelry gold is available in a wide range of colors, for example as white gold, yellow gold or red gold, depending on which metal is used in the alloy, i.e. whether copper, silver or platinum is added. However, an 18 carat piece of jewelry always consists of 75.0% pure gold.

Check fineness: 750 gold = 18 carat

In gold jewelry, the fineness is usually embossed in the form of a hallmark. Such a hallmark can usually be found on the inside of rings, whereas chains or pendants are usually stamped on the clasp. The carat number, such as "18 kt." (more rarely also "18k" or "18c") as well as the fineness in parts per thousand, such as "750".

The acid test, also known as the line test, is used to check the correctness of the statement when buying gold. The gold piece to be tested is rubbed on a slate, which serves as a "touchstone", so that a clear line remains. Various test acids are then applied to this fine test line one after the other. There is a separate test acid for each alloy, i.e. one for 18 carat, one for 14 carat, etc., each consisting of a specific mixture of hydrochloric acid and nitric acid (aqua regia).

If the abrasion on the test stone becomes twisted or discolored, the alloy is below the tested fineness; if the line remains unchanged under the respective acid effect, the gold content corresponds to the respective carat activity.

Our purchase prices for jewelry, gold, silver and co. are always based on the current gold price.

The value of your pieces therefore results from the weight of your pieces in grams, the fineness of your gold and the current price of gold.

Our prices for gold jewelry & silver

If you want to sell pieces made of colored gold alloys, you will receive the same price for all color facets. As the value of a piece depends on its fineness, it is irrelevant which metals have been alloyed. However, the gold content of 18 carat yellow gold is the same as that of 18 carat red or white gold, namely 75%. We therefore pay just as much for 18 carat yellow gold as for 18 carat red gold.

Buying 750 gold from Gold & Co

You can sell all gold items with us, as well as items made of silver, platinum and palladium.

1. free valuation of all your pieces

No matter whether you come to one of our stores in 1090, 1030 or 1220 Vienna with a single ring or several pieces of jewelry: We will value both your gold and your silver free of charge and without any obligation. If you wish to sell your valuables, you will receive the money in cash immediately.

2. detailed examination by experts

We check each piece individually and determine how many carats they have. The higher the fineness, the higher the value of your pieces. In Austria, jewelry is usually made of 585 gold, i.e. an alloy with 58.5% pure gold. In Italy or the Balkans, on the other hand, jewelry made of 18 carat gold, i.e. a 750 carat alloy, is more common.

If you want to sell different pieces, your items will be separated individually according to carat or fineness. We also check jewelry made of silver, palladium and platinum and pieces with diamonds or brilliant-cut diamonds.

3. comprehensive personal advice

We take time for you and explain the process of buying gold in Vienna step by step. We will be happy to answer all your questions about your items. Good advice is very important to us!

4. 100% transparency

With us, you are present when your items are weighed and can see the scales. Anything else would be dubious.

5. best prices when buying gold in Vienna

In addition to free and accurate valuations and detailed advice, we offer you top prices for your items. You can find all current purchase prices on our price overview page on Gold & Co.

You can't come to one of our branches in Vienna ? In such cases, Gold & Co. Goldankauf from all over Austria by post. Send us your gold, we will value your items free of charge and without obligation and make you a fair offer. If you accept our offer, you will receive your money immediately - if not, we will send your gold back to you free of charge.