Stones photo gallery

What is more expensive: blue sapphire or diamond?

Value – natural minerals used to make jewelry and art products. These stones are characterized by beautiful color, high hardness and durability, bright shine and play. Especially appreciated durability stone and rarity finding it in nature. Less rare minerals are often called semi-precious. The actual price of a stone is determined by its individual characteristics, weight, cost of cutting, as well as changing market conditions, which depend on fashion, advertising and a number of other factors. In Russia, it is customary to divide stones used for jewelry and for the production of stone-cutting products into three groups: jewelry (precious) stones; ornamental stones intended for the production of stone-cutting products (caskets, ashtrays), and an intermediate group of stones. There is no generally accepted classification that clearly separates precious and semi-precious stones. In accordance with the federal law of March 26, 1998 N “On precious metals and precious stones” (Article 1), precious stones are natural diamonds, emeralds, rubies, sapphires и alexandrites, as well as natural pearls in raw (natural) and processed form.

1. Gems

Diamond (diamond)

A diamond is a cut diamond. Diamond is the most valuable among all jewelry stones. Not a single gem can compare with it in the brightness of its shine and the play of all the colors of the rainbow. Moreover, this property is preserved even if the ring or earrings with diamonds have not been cleaned for a long time. The high price is explained by the rarity and exceptional complexity of the cut. Diamonds are graded according to a system : cut (cut), clarity (purity), color (color) и carat (weight in carats)), which allows you to determine how close the stone is to perfection. Classic diamond shape considered round with 57 edges. Cleanliness it is expressed in the presence or absence of stone defects or foreign inclusions. A perfect diamond, without flaws, is called a pure diamond. By Color Diamonds are divided into traditional (colorless and all shades of yellow) and fancy (blue, pink, red, green, yellow, orange, blue and black). So-called fancy colors are quite rare in nature and are highly valued. Diamond weight, as you know, is measured in carats (1 carat is equal to 0,2 grams). One carat is correspondingly equal to 0,2 grams. The carat is in turn divided into 100 parts. Small diamonds are considered to be diamonds weighing up to 0,29 carats, and large diamonds weighing over 1 carat.

Ruby

Ruby is one of the four most expensive jewelry stones. In terms of hardness, it is second only to diamond. Traditionally, the most valuable stones are those with a slight purple tint. Traditionally, rubies from Burma are considered the best. Rubies from this deposit have a “pigeon’s blood” color. Large stones are very rare and are very expensive in jewelry. Thai rubies are usually brownish and are valued cheaper on the world market. The main quality indicators characterizing rubies and sapphires are weight, color, purity и cut quality.

Sapphire

Sapphire is one of the four most expensive stones in the world. The juicier and brighter the blue of natural sapphire, the higher its price. Sapphire is very hard and can only be scratched by a diamond, making it perfect for rings and bracelets. Previously, only blue corundums were considered sapphire. Now these include corundums of various colors: yellow, purple, green, orange and colorless, except red. The color of the stone, as a rule, is specifically specified: green sapphire, yellow sapphire. Otherwise, only blue or cyan sapphire is meant. The main quality indicators characterizing rubies and sapphires are weight, color, purity и cut quality.The main color tone of sapphires is pure spectral blue. In addition to the main color tone of sapphires, violet and green shades are distinguished. The purity of rubies and sapphires is characterized by the relative freedom of the stone from internal inclusions.

Emerald

Emerald is a jewelry crystal of the highest class; many of them are more valuable than diamonds. Transparent, pure color emeralds, free from defects, are especially highly valued. Emeralds are considered low-value stones. Emeralds are divided into small – up to 0,49 carats, medium – up to 1 carat, large – up to 10 and very large – over 10 carats.

Alexandrite

Alexandrite is classified as a precious stone in Russia. It has a rare property – reverse, changing color depending on the type of lighting: during the day its color range varies from to , and under artificial lighting alexandrite acquires color. Due to the rare occurrence and size of individual stones, there is no need to talk about its industrial production in Russia. And in this regard, alexandrite is practically absent in domestic jewelry. Indeed, everything that is called alexandrite in the trade, upon closer examination, turns out to be synthetic corundum with the effect of changing color due to additives. The main indicators of the quality of alexandrites are color, purity, weight group, type of cut, proportions and quality of processing. The most valuable alexandrites are those that most clearly change color under different types of lighting (—green—).

2. Semi-precious stones

Semi-precious stones – this is the conventional name for those precious stones that are found quite often in nature and therefore have a lower cost. It is worth noting that many semiprecious stones are quite highly valued and are in constant high demand. So in fact semiprecious stones – these are the same precious stones, but having lower cost. These crystals and minerals were used in ancient times, and today as inserts for jewelry, and entire jewelry was created from stones. In addition, semi-precious stones are often used to make decorative elements – boxes, figurines, stands and candlesticks, combs

3. Ornamental stones

This is a collective term that includes all stones used both as decoration and for the production of stone carvings. Sometimes less valuable or opaque stones are called ornamental. Hard ornamental stones include chalcedony, carnelian, mosswood, agate, onyx, cat’s eye, jasper, aventurine, orlets, lapis lazuli, amazonite, pyrite, belomorite, obsidian, charoite and more Soft ornamental stones include gypsum and selenite. They are very well processed with cutting tools.

4. Organic stones

This group of stones includes pearls, coral, amber и nacre.

Pearl

A pearl is a hard, round object extracted from the shells of some mollusks. Pearl is a unique stone, a gift from the watery depths. He initially has complete beauty and does not require further processing. Pearl grains can be round, oval, pear-shaped, flat and various irregular shapes. The most valuable in shape are considered to be perfectly round and shiny pearls of white and pink colors. White pearls are valued somewhat lower. Pearls with natural defects in the form of pores, dents, tubercles and other defects that disrupt the shape and shine of the pearl, as well as with defects in the form of scratches or spots formed when the surface of the grain is damaged, are also valued much cheaper. The grain size is of great importance in the valuation of pearls: the larger the grain (in carats), the higher its value. Distinguish sea ​​pearls (correct form) and freshwater pearls (less regular shape). Natural sea pearls are very expensive. Since the beginning of the 20th century, not only natural pearls have been mined, but also cultivation pearls on an industrial scale (primarily in Japan). Beads from pressed shells are placed inside the pearl mussel, after which the mollusks are returned to the water. After a certain time, the beads, covered with layers of mother-of-pearl, are removed from the mollusks. Pearls have limited lifespan, as the organic matter present in the pearls dries out and decomposes. Pearls do not live more than 100 – 150 years if properly stored. To keep pearls from aging, they must be worn. The most common jewelry are beads, chokers, necklaces, and earrings. Gemstones come in a variety of colors, but sometimes they should be blue, whether it matches the outfit, your eyes, skin tone, fond memories or spiritual meaning. Which gemstone should you choose? We’ve come up with the 9 best blue gemstones – so you don’t have to! First let’s define our criteria for this particular list. We choose gemstones that are generally cut, mostly translucent, definitely blue (no turquoise, purple or green), all the same color and readily available. In addition, the sample must be hard and hard enough not to scratch or crack when placed in a jewelry setting. There is no doubt which stone will come out on top on our list, but who will fill the next 8 positions. Let’s find out, shall we?

No. 1. Blue sapphire

There are no prizes for guessing the world’s best blue gemstone. We chose this iconic stone because the best examples have an unparalleled color ranging from deep cornflower blue to slightly violet blue. They have a dark tone, but not so dark that it affects the brightness of the blue, and the saturation is very bright and even. Sapphires have an unrivaled history, centuries-old mythology, and connections to royalty, meaning you can’t go wrong with this gemstone.

No. 2. Blue topaz

Blue Topaz is a near-perfect gemstone of a magnificent blue color, available in large sizes with very few flaws and loved by all who see it. Two favorite variations of blue are the brightly colored “Swiss Blue” and the much darker “London Blue”. Blue topaz is very attractive, relatively inexpensive and available in a constant supply, making it a favorite among jewelry makers.

No. 3. Blue Diamond

Blue diamonds may look like natural, untreated gemstones, but they are incredibly rare—the 45-carat Hope Diamond is insured for $250 million, so it shouldn’t be included on our list, but enhanced blue diamonds are natural diamonds that have been irradiated or treated high temperatures. heat and pressure to transform a colorless gemstone into a vibrant blue gemstone, still expensive but relatively affordable and simply beautiful. Along with outstanding beauty, you get the prestige of owning a diamond.

No. 4. Blue zircon

Blue zircon is a very underrated gemstone. It is underrated because it is often mistakenly confused with man-made cubic zirconia. Blue zircons are typically heat treated, have excellent flame and brilliance, excellent clarity, have wonderful large sizes, and are reasonably priced compared to others on this list.

No. 5. Blue Aquamarine

Aquamarines have special pastel blue colors that are so similar to the ocean that you want to dive into! Their purity, clarity and uniformity of color are almost unsurpassed, especially in the larger sizes available in this unique gemstone.

No. 6. Blue tanzanite

Tanzanite is known as the blue gemstone, but it is much more than that. Its colors range from light blue to dark blue. Add to that blue some pops of red and hints of violet and purple and you can see why this gemstone is truly an eye-catcher. Tanzanite is generally always heat treated, is very clear and can come in quite large carat sizes. With tanzanite you are getting a very special gemstone, very rare and only found in one small part of the earth.

No. 7. Blue tourmaline

Tourmaline comes in a wide variety of colors in the gemstone world, including several vibrant blue shades. The blue ones are called “Indicolite Tourmaline”. Indicolites range in color from neon blue to deep blue and typically have excellent clarity. The color scheme is truly very unique and is almost always found in this gemstone.

No. 8. Blue spinel

Spinels come in a variety of colors, with the dark red version being the most expensive, but the almost equally rare blue gemstones are very valuable and highly sought after, especially the clear cobalt blue ones. Spinels are rarer than sapphires, and any pure examples in this almost otherworldly blue color sell out quickly.

No. 9. Blue Iolite

Iolite is a dark blue gemstone that sometimes fades to purple and is usually completely natural as it cannot be heat treated and has three different colors when viewed from different angles. Gemstones good enough to cut are usually clear with very few inclusions, and stones over 5 carats are very rare.

Hardness Chart of the First 9 Blue Gems

Gemstone Mohs Hardness Rating

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