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Tanzanite

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Tanzanite, Square Cushion, Tanzania, #ksg90
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Stone : Tanzanite
Item : #ksg90
Design : Square Cushion
Origin : Tanzania
Treatments : Heated
Weight : 7.88 Carat
Clarity : Eye Clean
Size : 11X10.7X8.4 mm
Price : Available from KING STONE GEMS

Comments : When it comes to colour in Tanzanite, it doesn't get any better then this 'AAA' grade royal blue gem. The colour is far better then the picture suggests. This gem does have some lovely purple flashes but the predominate impression is just a beautiful deep royal blue, exactly what you would want in a fine tanzanite. As a ring stone, this gem would be amazing with its outstanding colour and superb cut and polish, a special and exceptional tanzanite gem.

Tanzanite, Square Cushion, Tanzania, #ksg90

 

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Tanzanite, Star Crossed Rectangle, Tanzania, Star Crossed Rectangle Carats, 14.36x11.49x10.39mm, #1064, A very fine natural Tanzanite which has been cut in the wonderful Star Crossed Rectangle design. Doug Menadue :: Bespoke Gems :: WWW.BESPOKE-GEMS.COM - Finest Precision Custom Gemcutting Based In Sydney Australia
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Stone : Tanzanite
Cut By : Doug Menadue 2017
Item : #1064
Design : Star Crossed Rectangle
Origin : Tanzania
Treatments : Heated
Weight : 13.43 Carats
Clarity : Eye Clean
Size : 14.36x11.49x10.39mm
Price : RECUT FOR CLIENT - NOT FOR SALE

Comments : Recently I had the opportunity to recut a large tanzanite supplied to me by a client. The original stone was a catalog of everything that was wrong with a badly commercial cut stone*. It is a crying shame to see what is a beautiful piece of stone so terribly cut. What makes me even more disheartened is that this poorly cut "gem" is then sold to a customer (quite often a jeweller) for an exorbitant price as something "special". Customers are being taken advantage of all the time and are being sold gems which quite frankly are horribly cut and over priced for what they are. Customers have been convinced that heavier is better, that weight is all that matters! My goodness! How far from the truth that is. If folks are going to spend good money on an expensive "big" gem then they really must educate the eye and not be taken in purely by how heavy a gem is... you must take into account the quality of the cut and finish, otherwise, in all honesty you are being ripped off. I could go on and on about this but I'll save that rant for another day. I have included a couple of pics of the original gem for you to view.

However, in some cases the customer has the last laugh because that poorly cut stone is an excellent candidate for recutting and this is just such a case. Recutting any gem is a very specialised and delicate operation. Careful consideration has to be given to choosing the right design to best fit the shape of the original cut so as to maximise the return yield. There is no room for mistakes as there is only a very finite amount of material that you have to work with and adjustments almost always have to be made on the fly during the cutting process in order to cater for the inevitable asymmetry of the original cut. Some sides might bulge out more then it's opposite or the culet is off centre and slanted to one side. There are many things that are traps for the unwary or unskilled.

This tanzanite took some careful thought before I knew exactly how to proceed. I carefully selected a design of mine that I decided was a good fit. Luckily the tanzanite had good depth which gave me alot to work with but as you can see the crown on the original cut was very very low and I wanted to lift that crown up to get some action in the stone. A low crown and table on a gem is a sad thing... it has a dampening on the brilliance of a gem, kind of like putting a wet hessian sack on a campfire. The cutting proceeded well and the end result was stunning and I was blown away by the transformation. The colours now blended well and there was no longer a window for light and colour to escape. The sharp crisp facets and high crown splits the light and the brilliance and sparkle is dazzling.

In this case the customer definitely wins out! What they lose in weight they gain big time in beauty, brilliance and overall appearance. It is kind of like buying the most rundown house on the street and renovating it and by doing so doubling the value. The newly finished tanzanite is now worth considerably more then the original stone was. The old stone as it was would have been an embarrassment if it was set... the new one, well, geez just look at it! It is worthy of being set by the best jeweller in the best setting you could imagine. It is a stone that the customer can proudly wear anywhere. It is a gem that I am very proud to have been given the opportunity to respectfully and beautifully transform.

* A Catalog Of A Poorly Commercial Cut Gemstone :

- Sides and corners are not parallel and even. The top side is sloping down to the left and the top left corner is soft and slouched.
- Facet edges are rounded where ideally they should be crisp and sharp.
- Meet points are terrible and uneven.
- A big window aka "fish eye" in the centre of the stone. This is a big no-no in a stone as it lets light and colour escape out through the gem instead of being reflected back to the viewer. I call these "donut" stones.
- The polish is poorly done. You can see scratches on all the facets from the course grit they used.
- The table is a little wonky and not nicely finished.
- The facet patterns and the reflections inside the stone are terrible and uneven. It is a mess in there and there is no nice crisp clear facet pattern play.
- The colour is poorly blended and distributed.
- The culet does not come to a point, instead it is a short uneven keel.
- The height of the crown is way too low for a gem of this size.
- The pavilion is way too deep.
- The girdle is uneven and too steep and deep. It is not clearly defined and would be very hard to set in a jewellery setting.

Tanzanite, Star Crossed Rectangle, Tanzania, Star Crossed Rectangle Carats, 14.36x11.49x10.39mm, #1064, A very fine natural Tanzanite which has been cut in the wonderful Star Crossed Rectangle design. Doug Menadue :: Bespoke Gems :: WWW.BESPOKE-GEMS.COM - Finest Precision Custom Gemcutting Based In Sydney Australia
Tanzanite, Star Crossed Rectangle, Tanzania, Star Crossed Rectangle Carats, 14.36x11.49x10.39mm, #1064, A very fine natural Tanzanite which has been cut in the wonderful Star Crossed Rectangle design. Doug Menadue :: Bespoke Gems :: WWW.BESPOKE-GEMS.COM - Finest Precision Custom Gemcutting Based In Sydney Australia
Tanzanite, Star Crossed Rectangle, Tanzania, Star Crossed Rectangle Carats, 14.36x11.49x10.39mm, #1064, A very fine natural Tanzanite which has been cut in the wonderful Star Crossed Rectangle design. Doug Menadue :: Bespoke Gems :: WWW.BESPOKE-GEMS.COM - Finest Precision Custom Gemcutting Based In Sydney Australia
Tanzanite, Star Crossed Rectangle, Tanzania, Star Crossed Rectangle Carats, 14.36x11.49x10.39mm, #1064, A very fine natural Tanzanite which has been cut in the wonderful Star Crossed Rectangle design. Doug Menadue :: Bespoke Gems :: WWW.BESPOKE-GEMS.COM - Finest Precision Custom Gemcutting Based In Sydney Australia
Tanzanite, Star Crossed Rectangle, Tanzania, Star Crossed Rectangle Carats, 14.36x11.49x10.39mm, #1064, A very fine natural Tanzanite which has been cut in the wonderful Star Crossed Rectangle design. Doug Menadue :: Bespoke Gems :: WWW.BESPOKE-GEMS.COM - Finest Precision Custom Gemcutting Based In Sydney Australia
Tanzanite, Star Crossed Rectangle, Tanzania, Star Crossed Rectangle Carats, 14.36x11.49x10.39mm, #1064, A very fine natural Tanzanite which has been cut in the wonderful Star Crossed Rectangle design. Doug Menadue :: Bespoke Gems :: WWW.BESPOKE-GEMS.COM - Finest Precision Custom Gemcutting Based In Sydney Australia

 

Tanzanite, Bicentennial Brilliant, Tanzania, #650
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Stone : Tanzanite
Cut By : Doug Menadue, 2014
Item : #650
Design : Antique Round 1910 (John Broadfoot)
Origin : Tanzania
Treatments : Heated?
Weight : 1.6 Carats
Clarity : Eye Clean
Size : 6.5x6.5x5.5 mm
Price : SOLD

Comments : How about a bit of tanzanite love? Here is a sweet little tanzanite I finished the other day. I cut it in the Antique Round design which is a more classical style of cut, it is also a bit fuller then the standard round brilliant. This gem would be ideal as a ring stone and I think it would go really well with precious white metal. The colour is a violet blue and very beautiful. A very fine tanzanite gemstone.

Tanzanite, Bicentennial Brilliant, Tanzania, #650
Tanzanite, Bicentennial Brilliant, Tanzania, #650
Tanzanite, Bicentennial Brilliant, Tanzania, #650
Tanzanite, Bicentennial Brilliant, Tanzania, #650
Tanzanite, Bicentennial Brilliant, Tanzania, #650
Tanzanite, Bicentennial Brilliant, Tanzania, #650
Tanzanite, Bicentennial Brilliant, Tanzania, #650
Tanzanite, Bicentennial Brilliant, Tanzania, #650
Tanzanite, Bicentennial Brilliant, Tanzania, #650
Tanzanite, Bicentennial Brilliant, Tanzania, #650
Tanzanite, Bicentennial Brilliant, Tanzania, #650

 

 

 

 

 

 

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