Ruby By prestige gems ltd,

Ruby

离岸价格

获取最新报价

600 ~ 1000 USD / Milligram ( Negotiable )

1 Unit Minimum Order

国家:

Kenya

型号:

离岸价格:

600 ~ 1000 USD / Milligram ( Negotiable )（面議）获取最新报价

位置:

最小订单价格:

600 per Milligram

最小订单:

1 Unit

包装细节:

Bubble slick gemstone protector

交货时间:

1 - 4 days

供应能力:

1000 Unit per Day

付款方式:

PayPal, Money Gram, Western Union, T/T

產品組 :

产品规格

Brand Name: Ruby
Rings Type: Gemstone
Occasion: Anniversary
Gender: Children's

gemstone size:4 mm
Gemstone weight:10 grams
Gemstone Shape:All shapes
Model Number:NRG02
Place of Origin:Kenya
Gemstone Type:natural
Color:Red
Optical Special Effects:Blood red

详情

Good quality Red Ruby available rough and cut in all shapes
We are natural tanzanite supplier our company is located in Nairobi the biggest market for Natural Tanzanites.

We offer cut and rough tazanite in all shapes,upon request we are in a position to supply the quantity ordered at the fastest time possible.

our prices are reasonable considering that we offer quality Tanzanites.

We offer Tanzanites,Ruby,Sapphire,Emerals,Tsavorite,Rhodlite at reasonable prices.

Ruby is the red variety of the mineral corundum, one of the hardest minerals on Earth, of which the sapphire is also a variety. Pure corundum is colourless. Slight traces of elements such as chrome, iron, titanium or vanadium are responsible for the colour. These gemstones have excellent hardness. On the Mohs scale their score of 9 is second only to that of the diamond. Only red corundum is entitled to be called ruby, all other colours being classified as sapphires. The close relationship between the ruby and the sapphire has only been known since the beginning of the *9th century. Up to that time, red garnets or spinels were also thought to be rubies. (That, indeed, is why the 'Black Ruby' and the 'Timur Ruby', two of the British Crown Jewels, were so named, when they are not actually rubies at all, but spinels.)

Ruby, this magnificent red variety from the multi-coloured corundum family, consists of aluminium oxide and chrome as well as very fine traces of other elements - depending on which deposit it was from. In really fine colours and good clarity, however, this gemstone occurs only very rarely in the world's mines. Somewhat paradoxically, it is actually the colouring element chrome which is responsible for this scarcity. True enough, millions of years ago, when the gemstones were being created deep inside the core of the Earth, chrome was the element which gave the ruby its wonderful colour. But at the same time it was also responsible for causing a multitude of fissures and cracks inside the crystals. Thus only very few ruby crystals were given the good conditions in which they could grow undisturbed to considerable sizes and crystallise to form perfect gemstones. For this reason, rubies of more than 3 carats in size are very rare. So it is no wonder that rubies with hardly any inclusions are so valuable that in good colours and larger sizes they achieve top prices at auctions, surpassing even those paid for diamonds in the same category.

Some rubies display a wonderful silky shine, the so-called 'silk' of the ruby. This phenomenon is caused by very fine needles of rutile. And now and then one of the rare star rubies is found. Here too, the mineral rutile is involved: having formed a star-shaped deposit within the ruby, it causes a captivating light effect known by the experts as asterism. If rubies of this kind are cut as half-dome shaped cabochons, the result is a six-spoked star which seems to glide magically across the surface of the stone when the latter is moved. Star rubies are precious rarities. Their value depends on the beauty and attractiveness of the colour and, though only to a lesser extent, on their transparency. Fine star rubies, however, should always display rays which are fully formed all the way to the imaginary horizontal line which runs through the middle of the stone, and the star itself should be situated right in the centre.

国家:	Kenya
型号:	-
离岸价格:	600 ~ 1000 / Milligram ( Negotiable ) （面議）获取最新报价
位置:	-
最小订单价格:	600 per Milligram
最小订单:	1 Unit
包装细节:	Bubble slick gemstone protector
交货时间:	1 - 4 days
供应能力:	1000 Unit per Day
付款方式:	PayPal, Money Gram, Western Union, T/T
產品組 :	-