Eine Erklärung führt den Namen auf das Sanskrit-Wort tapas
zurück, das „Feuer“ oder „Leuchten“ bedeutet.
Im Jahre 1740 wurde ein Topas, der so genannte Braganza-Diamant, im
Glauben, es handele sich um einen echten Diamanten, in die portugiesische
Krone eingesetzt.
Für die begehrten rosa oder Pink Topase wurde die ursprünglich
gelben "imperial" Topase erhitzt, jedoch ist ein bestimmtes
Chrom dazu nötig, den Edelstein von gelb auf pink zu färben,
ist dies nicht im Stein vorhanden, färbt sich der Topas weiss und
ist wertlos.
Der Tsar Alexander I. von Russland hatte ebenfalls einige der begehrten
natürlichen pink Topase. Eine Garnitur mit diesen Edelsteinen erhielt
die Marchioness von Londonderry zum Geschenk von ihm.
Imperial topaz, a rich golden gem discovered near Ouro Preto, Minas
Gerais, Brazil, in 1735, forever changed the image of topaz and captured
the hearts of jewelry connoisseurs, Instead of the known yellow, tan
or pale blue gem, this "imperial" topaz had highlights of
rippling pink, orange and red. Not long afterward, a Parisian jeweler
named Dumelle found that the topaz turned a beautiful pink when heated.
"Pinked" and imperial topaz quickly became favorites in late-18th
century jewelry.
The popularity of gemstones depends on prevailing taste, and pink topaz
faded from favor around 1850, although imperial topaz was used occasionally
in jewelry of the late 19th century.
Around 1900, pink topaz made a comeback as Edwardian socialites vied
to display the finest, most expensive and most unusual jewels.
A few superb examples, such as the pink topaz pendant illustrated here,
once owned by the Marchioness of Londonderry, demonstrate how lovely
this gem can be. The revival was short-lived, and pink topaz never rose
to the level of demand it had in the 1830s.
It's easy to understand why there's so little pink topaz on the market,
given that it's been produced traditionally by heating imperial topaz,
which has a high market value itself.
Cost of material aside, there are significant risks. The trace element
chromium turns imperial topaz pink, but not all imperial topaz contains
chromium. Without this element, the topaz may become colorless when
heated. In addition, certain inclusions may expand when heated, producing
fractures and rendering the gem less valuable.
On a hopeful note, a deposit of fine pink to purplish pink topaz was
found in Pakistan in the early 1970s. Although some of this naturally
occurring pink topaz has been brought to market, it's still rare. Perhaps
as more of it is recovered, we'll see a new chapter in the history of
pink topaz jewelry.
There are also some rare original pink Russian topaz, from the vault
of the Tsar of Russia of unusually intense colour.
This Russian pink topaz was given by Tsar Alexander I to Frances Anne,
Marchioness of Londonderry in 1821.
The stone formed part of a set of graduated pink topazes worn by Lady
Londonderry on the front of her robes at the Coronation of William IV
in 1830.
It was later remounted with diamonds as a pendant by the Crown jewellers
Garrard, possibly to mark the accession of the seventh Marquess of Londonderry
on 8th February 1915. A brooch with pink topaz survived also, in the family.
A yellow diamond of oval form was also given by Tsar Alexander I to
Frances Anne, Marchioness of Londonderry. The stone was later mounted
as a brooch with a diamond-set Greek key border.
source: wartski
:::::::
Queen Alexandra´s Jewels | Amethystschmuck
Queen
Mary´s Jewels | Schmuck
Queen Victoria´s Jewels | Schmuck
:::::::
SCHMUCK
mit Topas kaufen - verkaufen :::: rotes
Faberge Ei - Werkmeister V.Meyer :::: Siegelringe
