Thursday, 23 February 2017

Ammolite

Ammolite is an opal-like organic gemstone found primarily along the eastern slopes of the Rocky Mountains of North America. It is made of the fossilized shells of ammonites, which in turn are composed primarily of aragonite, the same mineral that makes up nacreous pearls.

It is one of the few biogenic gemstones; others include amber, pearl and coral.
The ammonites that form ammolite inhabited a prehistoric, inland subtropical sea that bordered the Rocky Mountains. This area is known today as the Cretaceous or Western Interior Seaway. As the seas receded, the ammonites were buried by layers of bentonite sediment.

This sediment preserved the aragonite of their shelled remains, preventing it from converting to calcite.
An iridescent opal-like play of colour is shown in fine specimens, mostly in shades of green and red although all the spectral colors are possible.

Iridescence is due to the microstructure of the aragonite: unlike most other gems, whose colors come from light absorption, the iridescent color of ammolite comes from interference with the light that rebounds from stacked layers of thin platelets that make up the aragonite.
The thicker the layers, the more reds and greens are produced; the thinner the layers, the more blues and violets.

Tuesday, 21 February 2017

David Morris opens in Paris


Chandelier Earrings with Diamonds & Pink Spinels
British jewelry label David Morris has just opened its first French store, just a stone’s throw from Place Vendôme in Paris. David Morris is a British luxury jeweller famed for designing, crafting and selling fine jewellery and watches. It was founded in 1962 by David Morris and remains family owned.


Padparadascha ring

Heart-shaped ruby ring with diamonds

The Marcial de Gomar Collection

“La Gloria”, a rough emerald weighing 887 carats, will be a leading lot at the Guernsey’s auction in New York on April 25th.

Other rough and cut emeralds will also be auctioned, including the “Marcial de Gomar Star”, which Guernsey’s has described as “the largest recorded star emerald and one of only 11 in the world”.

Monday, 20 February 2017

Treasures Discovered in Ming Dynasty Tomb


A gold hairpin with six sapphires and six rubies on its outer layer with a large ruby at center.
In 2015 archaeologists discovered a Ming Dynasty tomb at a construction site in Nanjing, China, revealing the skeleton of a woman named Lady Mei, along with brilliant gold treasures.

Inscribed stone epitaphs found in the tomb say that she died in the year 1474 at the age of 45. Within the tomb archaeologists found fantastic gold artifacts inlaid with gemstones.

Gold bracelets. Gemstones are a mix of sapphires, rubies and turquoise.

A gold hairpin in the shape of a chrysanthemum. It has a large ruby at center and a mix of smaller sapphires and rubies on its petals.

A fragrance box with gold chain. It is decorated with four sapphires, five rubies and one turquoise.

Gold hairpin is decorated with a mix of sapphires and rubies.

Two gold hairpins with sapphires, rubies, crystal, turquoise and one cat’s eye stone.

Rare collection of star rubies heads to auction

This June at Guernsey’s auction house in New York, a collection of extraordinary star rubies – described by experts as potentially the best in the world – will go under the hammer. Weighing a combined 342 carats, the Mountain Star Ruby Collection consists of four one-of-a-kind gems.

The most impressive ruby in the collection is the 139.43 carat 'Appalachian Star'. It weighs just over a carat more than the 138-carat Rosser Reeves Star Ruby on display at the Smithsonian. The Mountain Star Ruby collection is even more unusual because the gems were found in Appalachia, North Carolina. The finder was a humble local man and self-confessed “rock hound”. He made the discovery in 1990 on one of his regular searches for rare and unusual stones. He passed away shortly after his find of a lifetime.

Sunday, 19 February 2017

James Taffin De Givenchy

James de Givenchy moved to New York in the early 1980s. After getting a degree in Fine Arts from Manhattanville College and an associate degree in graphic design from F.I.T. in New York City he joined Christie's auction house where he ultimately ran the West Coast Jewelry Department in Los Angeles between 1991 and 1994.

He left the auction world to work for the jewelry house of Verdura and then started his own jewelry concern in Manhattan in 1996.
James Taffin de Givenchy, designing under the name Taffin, has become one of the most sought-after jewelry designers.