November 04, 2020
The most expensive color topaz are rich Pink or Red Topaz, followed by rich Orange Topaz. These vivid colors (red, pink, and orange) can cost excess of $1500/ct in contrast with the blue topaz (commonly treated) that is available by not more of $60/ct. Blue Topaz is affordable gemstone.
White or Colorless Topaz is an affordable gemstone. It's ideal for jewelry, its hardness (8 Mohs Scale), transparency, brilliance and its low price, make this white gemstone an affordable choice for your jewels.
rectangular, emerald, oval, pear, teardrop).
Blue topaz is cut into any style and size.
Blue Topaz is available in large sizes, however Red and Pink Topaz are common small sizes.
Topaz will show eye-clean inclusion, except Red and Pink Topaz will show more inclusions.
Rare white topaz with amazing inclusions
Biphasic and Triphasic inclusions with immiscible liquids, veils, fingerprints or feathers. Solid inclusions (hematite, fluorite, etc). Solid inclusions finished “comet tail”. Needle-like rutile inclusion. Straight lines of growth.
Topaz occurs most commonly in pegmatites, granites and rhyolites (igneous rocks). Also it is found in secondary deposits (alluvial).
Afghanistan, Brazil (Ouro Preto–Minas Gerais), Burma (Myanmar), Canada, China, Kazakhastan, India, Madagascar, Mozambique, Namibia, Pakistan, Russia, Sri Lanka, Tajikistan, Ukraine, USA, Vietnam, Zimbabwe…
Make us stronger, restore the soul, dispel anger, break spells, remove insomnia, longer life, are some of the legends that have been attributed to the topaz for centuries.
Irradiation + heat treatment: Colorless topaz is irradiated, brown topaz are obtained. This brown topaz is subjected to a thermal treatment that removes the brown component, obtaining blue topaz. This blue color is stable to light.
Irradiation: Colorless topaz is irradiated turning it brown topaz, the color is unstable (exposure to sunlight).
Heat Treatment: Orange-brown topaz is treated to turning it Pink - Purple Topaz. (Natural pink topaz is rare)
Coating: It consists of a thin layer deposition (microns) on the topaz. This deposition may be a dye to impart color or change its color.
Also can be the deposition of a metallic material so that we get an iridescent topaz.
This topaz is known by the name "Mystic Topaz" - "Rainbow Topaz". This thin layer is delicate, is easily scratched. Coating is not permanent.
Citrine, Smoky Quarz, Glass
Solid inclusions with "comet tail"
Detachment zone probably due
Aluminium silicate that contains fluorine and hydroxyl. Al2 (F,OH)2 SiO4
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August 03, 2021
Hablar de Espinelas es hablar de Historia, del nacimiento de la Gemología, de guerras y coronas, pero sobre todo, de una gran piedra preciosa que resurge de las cenizas, cual Ave Fénix, pero en esta ocasión le ha costado más tiempo: DOS SIGLOS.
La Espinela es la piedra natal de Agosto, descubre los diferentes colores que presenta, las más valiosas, tallas más típicas, tamaños, inclusiones, dónde se encuentran, espinelas famosas y muchas cosas más.
August 02, 2021
Spinel Gemstone Buying Guide. Color and Price, Cut and Sizes, Clarity and Typical inclusiones, where is found, August Birthstone, Famous Spinels and more information.Talk about SPINELS is to talk of history, the birth of Gemology, of wars and crowns, but above all, of a great gemstone which is rising from the ashes, like the Phoenix, but on this occasion, it was a long times: TWO CENTURIES.
June 02, 2021
Here you will discover the differences between a cultured pearl vs natural pearl, how pearls are formed, types of pearl, their main characteristics, quality of pearls (nacre pearl, pearl luster, natural pearl colors, pearl size) , varieties of cultured pearls (cultured freshwater pearl and cultured saltwater pearl), history, etymology, etc.
Pearls are a Mother Nature‘s Miracle, rare treasures that come from the seabed and that have been adorning our bodies for millennia.
Pearls are the birthstones that correspond to the month of June.