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$600.00 USD
Prezzo
6066
13

4.20 CTS FACETED WATERMELON TOURMALINE GEMSTONE [GOGO152]

SKU
Dimensioni (mm)
15.000 x 6.000 x 4.000mm
Peso (cts)
4.200
Tipo
Faceted
Colori

FACETED NATURAL WATERMELON TOURMALINE

The GoGoanna collection of natural gemstones has been purveyed by qualified gemmologists for over 30 years. Take advantage of the collection of Brazilian Tourmalines that are being offered from the treasure trove.

This Brazilian tourmaline gemstone collection has a romantic history, purveyed on location or acquired in Teofilo Otoni, Minas Gerais, Brazil. These hidden gems were mined in the late 20th century and have been keep in GoGoanna's treasure trove for over 30 years. Now open to connoisseurs.

ROMANCE, HISTORY & LORE

When Dutch traders returned with gems from Sri Lanka in the early 1700’s, they called any unfamiliar stones by the Sinhalese name “turamali” meaning “stones with mixed colors.” Thus, any stone not recognized as a ruby or sapphire simply became a “turmali.”

Since then, science has enabled us to distinguish and classify the gems, which included zircons, fancy sapphires, beryls, chrysoberyls, feldspars and garnets, as well as gems belonging to a broad species now known as tourmaline.

Tourmaline is a relatively modern gemstone; only since the gemological boom of the 1970s was it widely appreciated. During this time, designers began experimenting with exciting techniques and unconventional settings, and the world took notice of tourmaline’s incredible variety.

ORIGINS

.Today, Brazil produces the largest volume of this gemstone, as well as the widest coloUr variety for a single location. Nigeria has also seen recent production of tourmaline in unusual coloUrs and sizes. Regions of lesser tourmaline production include Afghanistan, Pakistan, Kenya, Tanzania, Madagascar and Mozambique.

 With a hardness of 7 – 7.5, tourmaline is quite resistant to scratching, chipping, and cracking, making it an excellent choice for everyday wear.

SPECIAL PROPERTIES

Although green is the most common hue, tourmaline naturally occurs in virtually thousands of shades, tones and coloUr combinations—more than any other gemstone. One of the most distinctive features of tourmalines is pleochroism, the presence differing coloUrs or depths of colour when the gem is rotated. Because of its strong pleochroism, tourmaline is especially adored by skilled lapidaries, who can cut the gemstone in such a way that it appears multicolored.

While almost all gems are a variety of a single mineral, tourmaline is comprised of a group of minerals. These minerals’ chemical compositions and crystalline structures work in concert to produce tourmaline’s beautiful coloruing. Because of tourmaline’s endless colour spectrum, most shades don’t have a particular name— they are simply called “pink” tourmaline or “golden” tourmaline. However, there are also some distinct categories: Rubellite tourmaline is a reddish-pink variation often confused with rubies and pink sapphires. Indicolite tourmaline offers hues of minty blue. Stones of the purest blue are particularly sought-after. Chrome tourmaline is a grassy green considered distinct from green tourmaline, due to the presence of chromium. Found in East Africa, chrome tourmaline is rare and usually found in smaller sizes. Watermelon tourmaline is a phenomenon in which a tourmaline crystal has a core of pinkish-red surrounded by layers of white and green. When cut correctly, the resulting stone resembles a slice of watermelon. Paraíba tourmaline, the most expensive of tourmalines, is a copper-bearing, electric blue-green stone. Originating in Paraíba, Brazil, its occurrence is very rare, and it commands high prices. The color of Caribbean seas, Paraíba tourmaline’s most unusual trait is its mystical fluorescent glow. Rare tourmalines also exhibit the chatoyant or cat’s-eye phenomenon. This occurs when natural thread-like cavities running parallel to the length of the crystal are cut en cabochon.

Gemrock Auctions are the best online site for gemstones, revisit as gems are added weekly


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gogoannagems
gogoannagems
Inspired by the abundance and beauty of the earth's most natural treasure, Pamella Regan-Fox established GoGoanna in 1989. We are merchants of colored gemstones, pearls and devote our life to trading in over 20 countries with the view of locating truly exceptional and unusual pieces. In Australia we also travel extensively to source the best opals, colored diamonds, parti-colored sapphires, chrysoprase and pearls, which we showcase on our international travels. GoGoanna's gems, from alexandrite to zircon, are eagerly sought by leading international jewelry artists and designers who are looking for that extraordinary stone with an unusual cut and color. Among our elite clients are presidents, politicians, sultans, royalty, music moguls, film stars and sports celebrities. We pride ourselves in our collection of connoisseur collector stones GoGoanna's main strength is its passion for the industry. "Working in gemology presents an opportunity to discover that special stone whether it be the lustrous creation of the humble oyster or the fierce beauty of gemstones produced by volcanoes."
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  • ybd04
    ybd04
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    Very nice! I could not find anything like this online elsewhere. Thank you!

  • markmobsby
    markmobsby
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    Paid and shipped - no feedback left after 100 days

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    milarea
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    Paid and shipped - no feedback left after 100 days

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    Paid and shipped - no feedback left after 100 days

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Il programma Gemstone Sheriff consente ai nostri membri di richiedere un audit su qualsiasi prodotto, che è completato da una :qualificazione indipendente che valuta l'accuratezza della descrizione e delle immagini dell'articolo.

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Spedizioni da:
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Questo venditore aggiunge 10.00% tax alle transazioni in Australia.

Panoramica

Tipo di elenco : Standard
Codice prodotto : 601683
Inizia : 9th November 2024 04:12 pm PST
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