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Metal detecting for gold nuggets is a pastime that is fairly new. The old time prospectors who searched for gold decades ago, never had any piece of equipment remotely like a metal detector. Modern technology however, has brought us this new device - the metal detector and modern prospectors are finding some significant gold that was previously overlooked. A detector is an electronic device, which can sense metallic objects buried in the ground. Since gold is certainly a metallic material, metal detectors can be used to find gold nuggets. In the last 20 years, detecting for nuggets has become a very fast-growing aspect of the prospecting world. Several companies have developed metal detectors specifically optimized to find nuggets. Mind you, there is no such thing as a metal detector that finds only gold and no other types of metal, but there are systems capable of distinguishing iron trash from gold in most cases, and technology continues to improve. ™

Out in the western gold fields, the traffic of electronic prospectors on the hills appears to be increasing every year. While a lot of factors are contributing to this, probably the biggest force attracting these new folks is the continuing increase in the price of gold. Many experts think gold is headed higher for the long term and the number of new prospectors out in the field will surely reflect this increase in the coming years.

There are many varieties of metal detectors with technologies and features designed for certain characteristics and certain types of uses. All of the technologies currently in use work by putting electrical energy into a coil which creates a magnetic field and then sensing the response of a metallic object to that magnetic field. Some are designed for hunting deep caches and treasure, others for general purpose coin and jewelry hunting, and still others for underwater or beach hunting. The type we are most interested in is those detectors designed specifically to prospect for gold nuggets.

Many folks considering the purchase of a metal detector will ask "which one is best"? This is not a simple question and the answer depends on your finances and what you intend to do with your metal detector. When considering what detector to buy it is important to consider what type of detecting you want to do. If you plan to only detect for nuggets once in a while, you probably will be most interested in a general purpose detector which can also be used for detecting coins and jewelry at schools, parks and other locations. If you intend to focus only on detecting for nuggets and have the cash, it is best to purchase a detector which is optimized for nugget detecting.

The depth at which a nugget can be detected varies quite a bit with size, density and shape of the nugget, the mineral content of the soil, the technology هل جهاز كشف الذهب ممنوع في مصر؟ of the detector, the size of the coil being used and a number of other factors as well.

The world of metal detectors designed to detect nuggets is dominated by two technologies one is called VLF or induction balance, the other is called PI or pulse induction. With the VLF technology, the electric energy into the coil goes up and down as a sine wave. With PI technology, the electric energy into the coil turns on, shuts off for a brief period of time, then senses the presence of any metallic object by its magnetic field. In general, VLF technology is able to sense smaller gold and to discriminate gold from most iron trash, but it is also more sensitive to negative effects from mineralization in the ground. PI technology is able to sense large gold deeper and is much less sensitive to mineralization in the ground. Intense mineralization is common in many gold mining districts. As a result, detectors using Minelab PI technology are the ones most commonly used to find gold nuggets in many parts of the Western US.

Getting the best quality equipment isn't cheapwhen it comes to metal detectors built for gold nuggets. The cost of a top of the line, brand new Minelab GPX4000 with the typical accessories and a few extra coils currently runs well over $4500, and that is no small chunk of change. Yet in spite of that fact, there seems to be an unending stream of new prospectors - often retirees - that are willing to shell out some significant money to get involved in this exciting pastime. A surprising number are completely new prospectors. These are guys who have never panned, sluiced or dry washed a single flake of gold previously, but are attracted to the possibility that sophisticated detector technology can help them find some trophy sized gold nuggets (I can say from experience that staring too long at photos of those trophy nuggets will give you a bad case of gold fever faster than you can imagine!).

In my mind, nugget detecting is the toughest form of individual prospecting to consistently succeed at, but the attraction of the metal detector is the fact that the yields can be very much higher - when you are successful, you can find a significant amount of gold very quickly. It takes time, however to learn those skills and gain the experience needed to be successful, so don't expect to just hit the field and suddenly strike it rich. If you work at it, in time you will be successful.

Even though we use them every day, most people don't bother to think about how watches are made, or what materials are used to make them. When shopping for a watch we just choose the watch that fits our budget and lifestyle.

Nowadays, watchmakers have at their disposal a wide range of materials. Each material is highly appreciated by watchmakers for its own unique characteristics. Always thinking about the future, watchmakers spend a lot of their time experimenting with new types of materials

Many of today's watch manufacturers offer their timepieces in a choice of case metals. The three most common alloys used are high-grade stainless steel, eighteen Karat gold and platinum.

Stainless steel

Stainless Steel is the most common alloy used for watchcases today because of its durability and anti-erosion properties. It is a very hard metal, which is ideal for crafting professional sport watches such travel alarm watches, and sport chronographs. A watch made of steel is the practical choice for everyday use in contrast to precious metal watches, such as gold or platinum pieces. Which are usually regarded as dress watches.

Gold

Gold is the second most common metal used in watch making and is regarded as the classic choice for the finest watches. Although it is more malleable than stainless steel, eighteen karat gold is durable and well suited for watches. Eighteen Karat gold alloys can be formulated into three different colors, traditional yellow, pink/rose, or white.

Gold Plated

A gold plated watchcase is produced from a steel base and covered with a thin layer of Gold. This type of watch is obviously less expensive to make.

Platinum

Platinum the most exclusive metal used for watchcases. It is an extremely rare precious metal with excellent heat, wear and corrosion resistant properties, making it an ideal material for exquisite collectable timepieces.

There are other materials less commonly used to make watches, two of these are Titanium and Silicon.

Titanium - this is a white metal appreciated for its supreme durability.

Silicon- has the advantage that it eliminates the need for oil and theoretically reduces the amount of friction, thus prolonging the life of a watch movement.

When buying a watch for yourself you probably will not consciously think about what the watch is made of, you will just look for style and price to suit your needs. However if you are buying a watch for someone else as a gift, you may want that person to know it is a quality gift. In that case, it may matter to you what the watch is made of.