Mineral Review

What is the name of a glass-like stone?

In no way inferior to natural stones, the incredibly beautiful ceramic glass has won the love of jewelry masters. You will fall in love with this artificial stone and its unique shine at first sight. The properties of glass ceramics allow us to call it an analogue of natural stones. Crystallized glass doesn’t look that simple at all.

Man-made mineral

The creator of the sitall cannot be named, because debates about this are still ongoing. They started changing the structure of glass two hundred years ago, so it’s difficult to say who was the first. In the 18th century, René Reaumur, a St. Petersburg and Parisian scientist, experimented with glass at high temperatures. He created a material similar to porcelain. Two hundred years later, the USA became interested in glass crystallization. It is believed that in 1957, the American D. Stuckey developed a formula for growing an artificial mineral. The product was called pyroceram. At the same time, in the USSR, blast furnace slag (metallurgical waste) began to be used to create a new synthetic rock. By combining the words “glass” and “crystal”, the resulting material was called “ceramic glass”.

Properties and types of Sitall

Sitall is a fairly heat-resistant material. And, unlike natural stones, it has no porosity on the surface at all. The increased density prevents it from conducting heat and electricity, and it is not afraid of chemical exposure. In addition to durability, add exceptional crystal clarity. Working with such a stone is easy and pleasant: it lends itself to any type of cut, can be of any color and size, you can realize the most daring ideas! In addition, glass ceramic is inexpensive. Jewelry stoneware is represented by dozens of types. The main ones include ametrine – it is a copy of a two-color stone, a mixture of amethyst and citrine. It is also worth noting paraiba stoneware – imagine a stone with a bright, thick turquoise blue, which is also called electric or neon. London sitall is not much different from smoky gray-blue topaz, only it does not fade in the sun. The glass-ceramic sultanite is also brighter and shimmers more clearly, and it is not at all afraid of the sun’s rays. The price of the stone depends on the color. The most expensive are red-ruby. Blues and light blues that imitate aquamarine are a little cheaper. The difference can be 10-20 percent.

The magic of Sitalla is a stone of change

If you dream of urgently changing something in your life, you definitely need a sitall amulet. It represents balance and peace. Therefore, if you wear it constantly, you can improve relationships with colleagues and family. There is an opinion that if you keep a stone in your pocket and periodically touch it with your hand, you can induce psychic abilities. The gem will also help cope with depressive conditions; it prevents bad thoughts from lingering in the head and fills the soul with positive emotions. Sitall can be called a fire stone, which is why it is suitable for Aries, Leo and Sagittarius, giving them peace of mind and impenetrable resilience in the face of troubles. But this stone is contraindicated for already calm Virgos and Pisces; it will make them apathetic and weak-willed. The stone will bring self-confidence to all other zodiac signs.

Unexpected use of Sitall

Since this material can withstand high pressure and temperature, it is used where this strength and thermal stability is most needed: for example, for scales or microcircuit substrates. Sitall is also widely used in astronomical optics. This material expands slightly when exposed to heat, and is therefore indispensable in optical elements. Interesting fact: the floor of the Ostankino TV tower at an altitude of more than three hundred meters is made of glass ceramics! The transparent and hard material can withstand a weight of several tons. So if you go there on an excursion, you don’t have to be afraid to stand on one section with two or even three of you. Vintage jewelry is not just base stones, plastic and glass. Most jewelry has inserts of absolutely stunning unusual stones, which are not only beautiful, but also have their own name and price. In order to understand a little about the types of stones, we have prepared a list of the most used and favorite inserts by jewelers. It is interesting that many stones are known not by their names, but by nicknames given lightly by both collectors and jewelry sellers. 1. Aurora Borealis (Northern lights) Aurora Borealis is a rock crystal with an iridescent glow, processed in a special way and released thanks to the Swarovski company (the creator of elegant rhinestones and Austrian crystals is known throughout the world and the company is thriving today) in 1955. These rhinestones were widely used in costume jewelry in the late 1950s and early 1960s in numerous colors. They are sometimes mistakenly referred to as earlier carnival glass stones. Interestingly, nowadays mass production has not affected the quality of stones for the better. If you choose jewelry with Aurora Borealis stones, make sure that these are Swarovski stones, which have remained unchanged in their high quality for many years. 2. Bullet (bullet) High Dome Cabochon A type of cabochon with a very high dome, often resembling the end of a bullet. Round or oval in shape, but always with a high dome, compared to other stones. Typically, these types of cabochons have a flat bottom that allows them to be glued to the piece, but they are often set using prongs. Cabochons of this type were copied by jewelry designers from precious stones. Designers typically created such cabochons from glass and plastic. The most interesting jewelry with double cabochons is from the company DeLizza & Elster (creators of Julianna) and Hattie Carnegie. Cabochons have a convex outer side and a flat bottom. The stones are completely smooth to the touch. They come in various shapes – oval, round, pear-shaped. They can be made from precious or semi-precious stones or glass. Cabochons are usually polished and opaque, but are made of frosted glass in different shades. 4. ‘Cats Eye” (cat’s eye) or cabochon with foil ornament. Although these stones are usually called “opal” because of their green or blue color, this is incorrect. “Cat’s Eye” is a commonly used nickname among collectors for these cabochons, which are specially treated using foil in a variety of colors. Cabochons are usually round or oval in shape, but are sometimes found in marquise or other shapes. Interestingly, each stone in the same color family is slightly different from everyone else precisely because of the amount of foil. Foil cabochons were often used by jewelers in the late 1950s and late 1960s. Jewelry using these stones is very popular among collectors of vintage jewelry. DeLizza & Elster, Hollycraft, and Hobe, along with other manufacturers, actively used “cat’s eye” for their jewelry. Note: These glass stones should not be confused with semi-precious stones (chrysoberyl or quartz, or simulated versions of these stones), which are typically milky yellow or gray (but can be found in other variations) and are distinguished from others by a line down the center – the imitation cat’s pupil. 5. ‘Dragons Breath” (Dragon’s Breath) or Mexican opal A collectible nickname for stones made from glass mixed with metals to create an interesting dual-color glow ranging from red to blue with shifts from bright blue to purple. The color tints, called “breathing,” gave the stone such an interesting nickname. These are most often cabochons of round or oval shapes, transparent. They were first used in jewelry in the early 1900s to imitate opal. These stones were very often cut with silver, most often Mexican. Dragon’s Breath is often confused with opals, especially fire opals. The name “Mexican opal” is misleading – it refers to natural semi-precious stones, but glass stones also have the same name. The use of the term “dragon’s breath” to describe this type of stone is a relatively new phenomenon. This happened in the early 2000s when one clever marketer somehow decided that romanticizing an imitation semi-precious stone would increase sales. The nickname has stuck and is actively used by both sellers and collectors. 6. ‘Easter Egg” (Easter Egg) or Grooved Cabochons “Easter egg” is the nickname given by collectors to these oval-shaped stones, also known as fluted cabochons. The variety of bright colors in many cases resembles decorated Easter eggs. Fluted cabochons are most often found in orange-green (as shown here), purple-green, and purple-pink-green color combinations. Most of these cabochons are oval in shape, like an egg, but there are also round variations with an orange-green tint. Products with these stones can be rare and expensive, but inexpensive jewelry is common. This type of stone can be confused with “cat’s eye”, but the methods for making the stones are different and the appearance also differs. Grooved cabochons even feel a little different from other stones; they are not smooth, but rough. 7. Marner Heart Lampwork Glass Stones (approximate translation of stones-hearts by Lempwork from Marner) These heart-shaped stones are extremely popular among collectors. They first appeared in the company “Marner», founded in Providence, Rhode Island, in 1946. Julio Marcella, the owner of this jewelry production, produced high-end costume jewelry using patented lampwork glass beads. Lempwork is a glass working technique that uses a torch or lamp to shape the glass into the desired shape. (literally from English “working with a lamp”. In Russian, the lampwork technique, as well as the glass products themselves obtained in this way, are called “lampwork”, “lampwork”, “lampwork”, or even “glass-on-fire”). Merner produced stones of various colors – pink, blue, and green. Some stones resembled Venetian glass, although they were made in the USA, not Italy. Most of the jewelry dates from the early to mid-1950s. last century. The jewelry was marked with the stamp “Julio” or “Julio Marcella”. But the company also made jewelry for companies such as Kramer, Hobe and Hattie Carnegie. There are jewelry without any markings at all. Merner went bankrupt in 1957. The remaining stones were sold to the Hobe company, which in 1963 released a series of jewelry known as “Mayorka Petals”. 8. ‘Jelly Belly” (jelly belly) Jelly Belly” – This a collectible nickname for this type of insert where a clear plastic cabochon takes center stage. Elements made of colored plastic or glass are not considered stone Jelly Belly. Koro and Trifari jewelry are very popular and sought after by collectors. This stone is lucite, a plastic material that was suitable for military needs in wartime, and served as wonderful decorative inserts in peacetime. The most sought-after jewelry is 1940s silver items. Later, silver was replaced by other types of metal, which of course reduces the cost of jewelry. (Details in Golden Pages of Vintage. Jelly Belly) 9. Margherita (Margarita) Margarita is a type of glass made by Swarovski that was primarily used in costume jewelry from the 1960s onwards. The stone got its name “Margarita” because of its jagged shape. And the color can vary from two-tone to opaque. The stones were installed in jewelry in an interesting way – a hole was drilled in the middle, which fixed the pin. This is why Margarita stones were often used to create necklaces. 10. Peacock Eye Glass Cabochon (Peacock eye) The peacock eye is a green cabochon with a blue dot in the center that imitates a peacock feather. These stones were first made in Czechoslovakia (Czech Republic today), where the glass-on-foil method was used. Cabochons are usually round or oval in shape; Sometimes you can find jewelry with these cabochons and precious metals. But they are usually used in making jewelry. Particularly valuable are the Egyptian art nouveau peacock eye jewelry. It is very difficult to find such jewelry. 11. Rivolis Rivoli Cabochons Rivoli is a type of multi-cut glass manufactured by the Swarovski company. It was first used in jewelry in the late 1950s and early 1960s. A stone with a sharp top and a fine cut, where the color can vary from a single color to showing all shades of color. Such stones were usually secured with paws, but sometimes they were glued to the decoration. Most often round in shape, but can be square, oval or flower-shaped. Sizes can also be completely different, from very small to quite large. Rivolis are sometimes confused with inverted rhinestones or mistakenly thought to be inverted margaritas. You can hear the nickname of the stone – “headlight”. Well, and quite comical – “ravioli”. 12. Saphiret or Sappharine Saphiret is a type of glass with a blue-brown tint used in Victorian jewelry. Since the mid-20th century, similar stones have appeared in costume jewelry – Sappharine, made in the 1950s and early 60s. Many people confuse these types of stones, and in fact, the difference can only be understood if you know at least the approximate date of production of the jewelry. The color in saphiret and sappharine was obtained by adding a small amount of gold to blue glass when it was made, and the color may vary from batch to batch. Most of these stones are cut cabochons, but there are exceptions. Jewelry with these types of stones can be quite valuable. 13. ‘Watermelon” (Watermelon) The name for this type of rock crystal stone with a pink center and green outer edge is “Watermelon,” a nickname given by collectors because of the color. The production name of the stone is Vitrail II Medium Stone. This type of stone was often used by Elsa Schiaparelli and Judy Lee. There is currently a lot of unmarked jewelry with this amazing stone.

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