Diamonds are....

Everyone loves a diamond -- and here are some of the things you might need to know....

The 4C's or 4 charateristics that determine a diamond's beauty and value are agreed to be:
 
Cut. This is not shape but the amount and arrangements of facets in the stone. These facets maximise the amount of light refracted and reflected.  The better the cut, the more sparkle, flash or pop! [Excellent when encountering paparrazzi.]

Colour. These range from the near colourless stones, which are very rare and the most valuable, to yellowish and brown colours and and everywhere in between. The whiter the stone the more 'rainbows' or light refractions you get.  Then there are the coloured diamonds which are quite popular at the moment -- pink, blue, green and best of all the colours -- the canary yellow, which are dazzling and extremely rare.

Carat. The weight of a diamond consists of 100 points which equals a carat -- or the weight diamonds are measured in. An ancient measure, [quite different from the karats which measure gold], carats are based on the weight of the seed pods of the Carob tree, known for their consistent weight per pod.  The bigger the stone, the rarer it is and therefore the increase in value.

Clarity. This obviously refers to how clear a diamond is.  Inclusions are tiny natural characteristics that are created within the diamond as it is forming and these can affect clarity. The number, size and position of these inclusions determines a diamond's clarity and also affects it's value.

So there you have it -- this should be enough to get you started -- for more information or any questions, don't hesitate to give us a call on [Australia] +61 8 8339 7199 or email us on penny@simonsturtbray.com.

 

Titanium

Titanium is a notoriously difficult material to work with -- in fact it can spontaneously explode if you are not very careful.

Not to be deterred, Simon Sturt-Bray has been working with this difficult and dangerous material for many years with outstanding results.

Shown here is a selection of rings, mostly for men, with the exception of the exquisite Ring of Saturn in the centre, which also features a blue sapphire.

These rings are a great example of what can be achieved with a unique combination of fearlessness and artistry!

 

Demantoid garnets...

Garnets are often associated with the warm colours -- typically a blood red, or in rarer cases, a mandarin colour [see the Gallery section of this site for a great example].

Both Penny and Simon Sturt-Bray are, to say the least, obsessed by rare stones, and there are few more rare than a green garnet.

Green is the rarest and most precious colour for garnets and it typically comes in three forms:
Uvarovite garnets which are tiny and too small to be cut for jewellery.
Tsavorite garnets which are a deep green and are found near Mount Tsavo in Tanzania
Demantoid garnets - the most important of all

Sometimes mistaken for emeralds, demantoid garnets were hugely desirable in both early 20th century and Victorian-era jewellery [with its marked penchant for coloured stones in general]. Despite the stone's popularity, demantoid garnet was never widely available because of its rarity and for well over fifty years newly mined stones have been quite simply unobtainable.

Recently small finds have again been made in Russia, so this is the first time in over one hundred years these fabulous stones have been available. You can imagine how a rare stone enthusast like Simon reacted when a very very tiny quantity of them became available in Australia. Such is his reputation the stone merchant would not dare to offer them to anyone else first!

Called demantoid because of the way the stone reflects light [like a diamond] and because of its high adamantine lustre, demantoid garnets are softer than a diamond and have a higher colour dispersion.

According to the UK based gemstone authority www.24carat.co.uk
"Demantoid garnet is a rare and beautiful bright grass green sub-variety of andradite garnet. It appears to have first been discovered around 1892 in the Bobrovka area of Russia.The Bobrovka is a small tributary of the River Tschussowaja in the Sissersk region on the western side of the Ural Mountains.

It was at first thought to be emerald, which is found nearby, and has been erroneously called "Uralian emerald".

The brilliant colour of demantoid garnet is due to partial replacement of the silicate by chromic oxide. A diagnostic characteristic of demantoid is the inclusion of radiating fibres of byssolite fibres in a pattern described as a horse-tail. There is no other green stone which shows this feature."

In the ring shown above are three perfectly matched demantoid garnets of the very highest quality. If you are interested in having something made from our remaining [very small] stock of demantoid garnets you should email penny@simonsturtbray.com to discuss.

The ring shown here is not available as it has gone to a lovely new home and will not be repeated.