A Guide to Buying Diamonds and Tanzanite Everything you need to know about buying engagement rings and gemstone jewellery in Cape Town.
As professionals who hand-select only the highest quality gems from reputable sources Shimansky is one of the only jewellers in the country that has a license to source rough diamondsthe folks behind the brand are incredibly clued up about grading stones, and they stress the importance of being in the know prior to making a purchase.
In much the same way that there are countless variables that influence the price of a fine wine, there are many factors that contribute to the value of a diamond or tanzanite.
These key Cs are cut, colour, clarity and carat-weight. The cut of a diamond is the most important of the Four Cs and the only one that is determined by man.
This factor affects how light bounces around within the stone and therefore how sparkly the diamond is. If the shape of the gem is ideally proportional and symmetrical, it retains its ability to reflect the most light and increases in value.
However, if the stone is cut too deep or too shallow, light will escape out of the sides and the bottom and shine and value decreases.
This factor refers to the absence or presence of an undesirable yellow or brown tint in white diamonds. The closer the white stone is to being absolutely colourless, the rarer and more valuable it is.
This is not to be confused with fancy-coloured diamonds, which are naturally rich yellows, oranges, pinks, greens and blues and are rarer and more expensive than colourless white diamonds.
Diamonds may show minute traces of other minerals, which appear as natural imperfections known as inclusions. A carat is a unit of measurement used to indicate the weight of a diamond, with one carat being equal to mg.
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The larger the diamond, the higher its carat-weight and the greater its price and worth. However, the value of a stone is determined by all of the factors above, not just carat size.
So, you may, for example, decide to buy a smaller diamond with high clarity and colour or you may opt for a bigger diamond with lower colour and clarity.
In order to have high confidence, you should make sure that the stone has been certified by an independent diamond body, like the Gemological Institute of America GIA or the European Gemological Laboratory EGLand that it comes with an authentic certificate, which breaks down the Four Cs.
At Shimansky, every diamond is laser inscribed on its girdle with a unique identification number that links the stone to its certificate.
This enables buyers to confirm the authenticity and the value of a piece at any time.
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Discovered at the foothills of Mount Kilimanjaro intanzanite is times rarer than a diamond. Its value is also determined in a similar way to the diamond by using the Four Cs.
If tanzanite is cut too shallow, light will escape from the stone and this will result in a lighter shade of violet or blue and a loss of value.
Generally, the deeper the cut, the more intense the hue and the more valuable the stone; the shapes that yield the best colour are the cushion, oval and trillion cuts.
The colour of this gorgeous gemstone is predominantly blue or violet, and the more intense the hue is, the more rare and pricey the tanzanite is.
What sets this gem apart from many others is the fact that it is trichroic; meaning, it has the ability to display three colours, namely violet, blue and red, when viewed from three different directions.
The clarity of tanzanite is measured in the same way as a diamond, only using a different strength magnifying loupe.
Again, the closer the gem is to being flawless, the more costly and sought-after. Note: The hardness of tanzanite should also be considered. According to Mohs Scale of Mineral Hardness, this gem is relatively soft and vulnerable to scratches.
So, Shimansky does not recommend using tanzanite in engagement rings, which are worn daily and hence easily damaged.
Classic by nature, solitaire rings suit all outfits and occasions. 1 carat diamond ring for sale cape town Cushion-Cut Diamonds have always been a choice for beautiful and famous women, from movie stars and celebriities to royalty.
Aside from gemstones like diamonds and tanzanite, each piece of jewellery is also made with different metals, many of which are alloys.
The fewer additional materials mixed with pure metal, the higher its value.
Gold is a common choice for jewellery. Pure gold is yellow in colour when mined, so to make white gold it is necessary to add other white metals, such as iridium or palladium, to the item.
Although this process initially creates a white lustre, the high alloy content means that the ashen sheen will eventually wear off and will need to be re-rhodium plated.
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15.01.2020 – Your new favourite spot is waiting to be discovered Discovered at the foothills of Mount Kilimanjaro in , tanzanite is times rarer than a diamond. Phone Number. Colorless diamonds allow more light to pass through than a colored diamond, releasing more sparkle and fire.
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All Contact Details. Cut The cut of a diamond is the most important of the Four Cs and the only one that is determined by man. Colour This factor refers to the absence or presence of an undesirable yellow or brown tint in white diamonds.
Clarity Diamonds may show minute traces of other minerals, which appear as natural imperfections known as inclusions.
Carat-Weight A carat is a unit of measurement used to indicate the weight of a diamond, with one carat being equal to mg.
Cut If tanzanite is cut too shallow, light will escape from the stone and this will result in a lighter shade of violet or blue and a loss of value.
Colour The colour of this gorgeous gemstone is predominantly blue or violet, and the more intense the hue is, the more rare and pricey the tanzanite is.
Clarity The clarity of tanzanite is measured in the same way as a diamond, only using a different strength magnifying loupe.
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Carat-Weight The carat-weight of tanzanite is assessed on the same scale as the diamond. See More. Cape Town Events Calendar.
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However, if the stone is cut too deep or too shallow, light will escape out of the sides and the bottom and shine and value decreases. 1 carat diamond ring for sale cape town These results are the closest match to your search. One carat equals milligrams or 0.
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