Stones by zodiac signs

What is the name of a stone that looks like a diamond?

Not all stones that look like diamonds are actually diamonds. Since this stone is expensive and not available to everyone, the jewelry industry offers a wide range of diamond substitutes. Analogues of diamonds can be both natural materials (for example, quartz) and many synthetic ones. Read more about materials replacing diamonds and their properties in the table below (source: website of the Gemological Center of Moscow State University http://www.gem-center.ru/).

Materials used as analogues (substitutes) for diamonds in the jewelry industry

Name and formula Optical character Refraction Hardness Variance UV fluorescence Specific weight Add-
body
evidence
Diamond (C) Isotropic 2,42 10 0,044 Blue, green, yellow of varying intensity or absent 3,52 High thermal conductivity, abnormal birefringence, mineral inclusions
Fianit (ZrO2) Isotropic 2,18 8,5 0,060 Faint yellow-orange or absent 5,95 Rarely – gas bubbles
Zircon (ZrSiO4) Anisotropic 1,78-2,01 6-7,5 0,038 Moderate yellowish, orange, whitish 3,95-4,80 Mineral inclusions, high birefringence (split ribs)
Strontium titanate (fabulite) (SrTiO3) Isotropic 2,41 6 0,109 No 5,13 Very strong dispersion, gas bubbles, sharp polish marks
Yttrium aluminum garnet (YAG) (Y3Al5O12) Isotropic 1,83 8,5 0,028 Orange 4,55 Gas bubbles
Gallium gadolinium garnet (GGG) (Gd3Ga5O12) Isotropic 2,03 6,5 0,022 Weak orange (SW) 7,05 Gas bubbles
Lithium niobate (linobate) (LiNbO3) Anisotropic 2,25 5,5 0,075 No 4,65 Perfect cleavage, gas bubbles, high birefringence (split ribs)
synthetic rutile
(TiO2)
Anisotropic 2,62-2,90 6-6,5 0,190 No 4,26 Gas bubbles, high birefringence
Yttrium aluminate
(YАlO3)
Isotropic 1,97 8,5 0,033 No data 5,35 Gas bubbles, no play of light
Glass Isotropic 1,44-1,90 5-6 0,009-0,098 Miscellanea 2,3-4,5 Rolled fins, gas bubbles, abnormal birefringence
Quartz (SiO2) Anisotropic 1,544-1,553 7 0,008 No 2,66 Gas-liquid inclusions
Natural and synthetic sapphire (leucosapphire)
(Al2O3)
Anisotropic 1,76-1,77 8 0,011 Moderate blue (CB) or absent 4,00 Very weak twinning, gas bubbles, inclusions
Synthetic spinel
(MgAl2O4)
Isotropic 1,73 8 0,010 Various from inert to strong 3,64 Gas bubbles, polishing marks, abnormal birefringence (tatami pattern)
Synthetic scheelite (CaWO4) Anisotropic 1,92 4,5-5 0,015 Pink, blue (KB) 6,06-6,30 Curved growth lines, gas bubbles
Topaz
Al2SiO4 (F,OH)
Anisotropic 1,61-1,62 8 0,014 Weak to inert 3,53 – 3,56 Mineral and gas-liquid inclusions
Sphene (titanite)
(CaTi[SiO4]O)
Anisotropic 1,84-2,11 5-6 0,051 Inert 3,29-3,56 High birefringence (split ribs), fragile
Zincite (ZnO) Anisotropic 2,02 4,5 0,060 Green 5,55 Fragile
Moissanite (SiC) Anisotropic 2,69 9,5 0,090 Inert or faint yellowish 3,10-3,22 High birefringence (split ribs)

Lifetime warranty on moissanite The Bright Spark company is the first seller in Russia of real moissanites from the American brand Charles & Colvard. All stones that are sold wholesale and individually or used to create jewelry have quality certificates. Plus, they come with a lifetime manufacturer’s warranty. Since 2016, in addition to Charles & Colvard stones, our company has been offering moissanites under its Bright Spark brand, which have a unique cut that makes them indistinguishable from a perfect diamond. Moissanite is the common name for a family of silicon carbide (SiC) crystals. Grown in the laboratory, they are a worthy alternative to diamonds and demonstrate the best optical properties. At the same time, a stone of similar size, shape and cut costs 10–20 times less than a diamond. Do I need to overpay? The beauty of gemstones lies in sparkle, white and colored flashes, and intricate play of light. Moissanite has a refractive index of 2,65–2,69, which is the only property superior to diamond (2,42). Due to this, the crystal looks like a diamond, and does not resemble a cheap imitation. Moissanite has a light dispersion of 0,104 versus 0,044 for diamond, so it exhibits more rainbow-colored flashes. The crystal fascinates with the play of light and radiance in any light. High-quality moissanite is characterized by crystal purity, perfect transparency and colorlessness. This allows the stone to be used in white gold jewelry – it does not look yellow against the background of the metal. Cheap options of dubious origin may have defects in the form of carbon nanotubes directed along the crystal growth, as well as a clearly visible brownish or greenish tint. It is worth noting that two polytypes of silicon carbide crystals are common. One of them (6H-SiC) exhibits yellow fluorescence (glow when exposed to ultraviolet rays), which makes the stone yellowish and cloudy in sunlight. The other one (4H-SiC), which recently went on sale, has no fluorescence and is indistinguishable from diamond in this property. With gemstones, size matters! If we compare two crystals of 1 and 2 carats, the second one sparkles 8 times more. Small diamonds in jewelry look faded and it is almost impossible to see flashes of color in them. For the same amount you can buy jewelry with moissanite weighing from 1 to 3 carats. Another advantage of moissanite over cheap imitations is its high hardness, in which it is only slightly inferior to diamond (9,5 and 10, respectively), being the second hardest colorless mineral. In everyday conditions, a difference of 0,5 does not matter, since during an unlimited period of wear the surface of the crystal is not scratched and the edges are not erased.

Natural origin and mass production

  • colorless;
  • yellow, green, black and cognac colors.

The weight of artificial moissanites typically ranges from 0,01 to 14 carats. The smallest stones are used to create graceful paths and sparkling halos. Large ones serve as spectacular central inserts in pendants, earrings, and rings.

Subtleties of cutting

Stone processing is highly skilled manual labor. Due to differences in optical properties, moissanites will not sparkle when treated like diamonds. Therefore, cutting is carried out in accordance with unique, specially designed 3D patterns. Precise work and impeccable calculation allow you to fully reveal the potential of the gem, achieving ideal shine and a bewitching play of light.

The most popular is the round shape, which corresponds to a brilliant cut of 57 facets. There are also princesses, baguettes, cushions, radiants, drops, and hearts.

According to reviews from jewelers, moissanites always have an impeccable shape. At the same time, this is extremely rare among diamonds. Masters deliberately deviate from calculated angles in order to preserve carats. And sometimes, due to the low optical properties and small size of the diamond, there is simply no point in painstaking work.

Bright Spark is a manufacturer of high quality, unique diamond cut moissanites and gold jewelry. All stones have a lifetime guarantee.

Benefits of moissanites from Bright Spark

Refractive index of light

For diamond, the indicator value is 2,42, and for moissanite – 2,69 units. Thanks to this, artificial moissanites are not inferior to diamonds in appearance and sparkle. Cubic zirconias, on the other hand, have a “glassy” luster – a cheap analogue can be seen from afar.

In this indicator, moissanites are twice as fast as natural stones (0,104 versus 0,044). This means that artificial gems display all the colors of the rainbow even in dim lighting.

Purity and color

Bright Spark moissanites, unlike Asian stones, have excellent clarity and color (from 4/3 to 1/2), corresponding to prestigious and expensive premium diamonds.

Diamonds and cubic zirconias do not always have an impeccable shape. In the first case, jewelers deliberately deviate from the desired angles so as not to lose carats. In the second case, due to the low optical properties of the stones, there is simply no point in painstaking work. Bright Spark moissanites always have an impeccable cut that fully reveals their optical properties.

Bright Spark moissanites have values ​​of 9,25–9,5, quite comparable to the characteristics of diamonds. Thanks to this, scratches do not form on their surfaces for an unlimited period of time. Cubic zirconia has a hardness of 7,5 to 8 and therefore quickly becomes cloudy and loses its original appearance even with infrequent wear.

Another advantage of elite synthetic stones is the price. A huge moissanite, perfect in color and shape, can be bought for the cost of a small, dirty diamond. Thus, the motto of our company is “We make dreams more accessible!” completely justified.

In 2016, Bright Spark launched a line of moissanites made in the USA under its own brand.

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