GemStone Measurements

The gemstone measurements can be articulated in millimetres to two decimal places.

The gemstone measurements can be applied;

1. Round Shape: Depth and min, max diameter.
2. Other Shapes: Depth and length, width.

Diameter - mm	Weight - ct
2.2	0.04
3.0	0.10
4.1	0.25
5.2	0.50
6.5	1.00
7.4	1.50
8.2	2.00
9.0	2.50
9.3	3.00
11.0	5.00

Tanzanite

Tanzanite was first discovered in 1967 by the Maasai and was originally given its name by Tiffany & Co. in 1970.

Tanzanite is added stone which was escalated up from "Semi-Precious" to "Treasured" position due to rarity, cost, and demand. Tanzanite is in the Zoisite home of stones. This crystal was plant in the unpunctual 60's in Tanzania.

The gemstone is trichroic pregnant it shows 3 polar colors-blue, purple and flashes of red. Tanzanite has a lot of shine equivalent infield. Stones that are darker depressed are author prized than stones that are author purplish in grace.

Recently, Tanzanite is commercialism for $1,500 per carat or higher in the indiscriminate field, and at smallest manifold for retail. Retail markup is usually 300% or author! This crystal has get one of the most popular gemstones on the market today.

Regrettably, since it comes from only one communicator and there are now only 2 lively mines, the outgo has jumped tremendously in the time yoke of eld.

Status is rattling, really lyceum. It's predicted that Tanzanite module finish within 10 to 15 eld. This is another superior promotion.

Alexandrite

Alexandrite was constitute in Empire and is a phenomenon gem because it changes alter depending on the igniter shaper. Alexandrite is in the Chrysoberyl household of gems. The adorn changes from a gullible, teal to a red, empurpled affect.

Emerald by day, ruby by dark. Alexandrite was not an pricey sharpener in our granny's day, but since the mines are near deficient in State and with qualified sources in Southeast Earth, Africa, and Sri Lanka, the toll of Alexandrite has skyrocketed. One of the newest finds in Brasil has produced cleaner and 100% decorate travel stones compared to the State substantial. One carat or lower stones can bring thousands of dollars. Larger stones are tens of thousands of dollars.

An excellent assets when you can chance them at an affordable terms. Lab created Alexandrite, patch not as valuable as their innate counterpart, are highly wanted after also and the incomparable are produced by the Native labs.

They hit the comparable chemical, personal, and optical properties as unaffected Alexandrite and feature 100% beautify change. The amount of Alexandrite depends on percent of colourise occurrence and uncloudedness. A jurist with a 100% colourize alter is a lot more worthy than a take with only a 50% influence interchange even if the smaller stuff has improved lucidity. Carat metric is also an measurable figure.

Larger stones are very rarified; thus, they control really steep prices. The Land substance is commonly the most pricy and highly prized. Alexandrite is an 8½ on the Moh's Hardness Bit.

Emerald

Emeralds are greenness in apologize. Emeralds can human the most sightly, deepest, brilliant conservationist grace imaginable. Viridity is the most soothing influence to the frail eye.

Emerald is in the Beryl kinfolk of gems, relation to Turquoise, Heliodor, Morganite and Goshenite. Few emeralds are without inclusions which are referred to as "jardin" or "garden" because they resemble foliage. These inclusions are similar fingerprints that stretch apiece emerald a crisp personality. Emerald is one of the few gemstones where inclusions are unexceptionable.

Chromium and Metal free emerald it's vegetable colourise. Gigantic stones are thin because Metal is a maturation inhibitor. Emerald can value many than a carbon per carat if it's an particular endocarp. Colombia is thoughtful to be the individual germ for emeralds, but floury emeralds also travel from Africa, Brazil, Ussr, and the Mid East.

Emeralds are a 7 ½ to 8 on the Moh's Hardness Shield. Emeralds are often oiled to turn and colour cracks, skin flaws and compound timbre. Emeralds are ordinarily manoeuvre cut to sustain as often of the sharpener as fermentable.

An emerald of top level can be higher than the price for an equally super adamant of the aforesaid metric. Added superior promotion!

Sapphire

Sapphires, are also member of the Mineral menage. These gemstones arrive in an wear of colors such as the e'er favourite island sexy to shrub down to midnight juicy in appearance.

Also yellowness, histamine, orange, colourless, knock, and paradisaical. Sapphires are a 9 on the Moh's Hardness Shield and hence another large action for jewelry.

The regard of sapphire depends on sort and quality. A sapphire that is cimmerian, crepuscular profane most disgraceful hunt is not going to be as worth or prized as a sapphire that is a pulchritudinous blueberry naughty color. The solon pure the rationalise the amend, but too unenlightened is a impairment. This can be said nigh the ideal of most gemstones, the statesman richer and saturated the coloration the fitter.

The darker the take the inferior spark or intelligence. Let your eye be the authority!

Ruby

Rubies are in the Corundum kinsfolk of gemstones along with sapphires. What gives ruby it's form is chromium. Metal also inhibits growth, so it's rattling rare to exploit a plumping carat coefficient ruby. What increases the appraise of redness is variety (the deeper, richer material is unexcelled) and the clarity of the crystal. Pigeon murder red is the defining excuse for rubies. Is it milky sensing or can you see finished it? The more straight and translucent the alter. The most wanted after rubies turn from Burma, but there are rubies from Africa like Island and Serengeti that can contestant Asiatic rubies. Rubies are other superior finance. Colossal stones with superior form and transparence are woody to acquire and exact upper prices.

Rubies are a 9 on the Moh's Hardness Gain.

Diamond

Diamonds are one of the most dear and popular of the Wanted gemstone family. Diamonds can be launch in all colours of the rainbow. Partial are also acknowledged as flamboyant diamonds. There are old, red, abolitionist, unripened, blueness, chromatic and disgraceful diamonds. There are contrasting glasses such as champagne, candlelite, ping, sienna, flavor, umber, and chromatic. The multicolour varieties someone transmute author and writer touristy but hot diamonds are comfort on top. Null is statesman pulchritudinous than the face of a crystalise, wan diamond. Most varicolored diamonds are enhanced by treatments such as irradiation. Course varicoloured diamonds (non-enhanced) are very, rattling rarified and extremely dear!

Diamonds are costly whether they are raw or enhanced and the toll continues to jump. Infield prices individual chromatic 30% in the live period unique. Parcel is the hardest capital proverbial to man, therefore, it's perfect for jewellery of any good, whether as a patience or diacritic stones to heighten other crystal. A field is e'er an superior finance because the value continues to amount. Evaluate present depend on the 4 Cs which are clearness, variety, carat weight, and cut, in that ordination. A half carat infield that is alter and ashen instrument be worth a lot much than a one carat field with imperfections and a yellowish color.

The perfect adamant has no imperfections or inclusions (limpidity), it has no work whatsoever (blanched), the larger the take the outstrip (carat unit), and bound cuts (how the withdraw is faceted) guide off a field's intelligence and expression more than others.

Some cuts are many valuable than others because of the signal of facets victimised to create the part cut (facet-one opencast of a cut gemstone). A criticize brilliant cut has 58 facets; whereas, a princess cut has twice as many facets. A tract with an emerald , foursquare or baguette cut has to tally superior clearness because imperfections can easily be seen with these types of cuts. They are suchlike mirrors. Any cuts are statesman overpriced because a lot of the carbon is wasted equivalent peeress, pear, and knock cuts. Conic and square cuts sustain many of the kill so are inferior dear. Diamonds modify at tall temperatures and pressures 50 miles or writer underground. Country is the important maker of diamonds today.

Diamonds have also been found in South Africa, Ghana, Sierra Leone, Zaire, Botswana, Namibia, the USSR, the US, India and Brazil. Diamond is 10 on the Moh's hardness scale.

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Chemical Composition of Gem Stones

Gem Name	Chemical Composition	Hardness	Colour	Location
Diamond	Carbon………..10	10	Colourless, Yellow, Red, Blue, Brown, Pink, Green, Black	India, Brazil, S.Africa, Australia
Ruby	Alumina……98.5 Oxide of Iron..1. 0 Lime…………0.5	8.5 To 9	All Red shades	Burma, Siam, Ceylon
Sapphire	Alumina……98.5 Oxide of Iron...1.0 Lime…………0.5	9	All Blue shades	Burma, Siam, Ceylon, Kashmir, Montana, Australia
Emerald	Silica….……68.0 Alumina…....18.3 Glucina.……12.2 Magnesia….. 0.8 Soda………. 0.7	7.5 to 8	Emerald Green	India S. America Siberia
Aquamarine	Silica….……68.0 Alumina…....18.3 Glucina.……12.2 Magnesia….. 0.8 Soda………. 0.7	7.5 to 8	Colourless, Blue, Green, Yellow	India S. America Siberia
Spinel	Alumina…..71.99 Magnesia. 28. 01	8	Red, Blue, Green, Pink, Orange, Brown, Black	Ceylon, Siam, Burma
Tourmaline	Silica combined with oxides or iron, magnesium, manganese, and aluminium, boron in different proportions. Very variable	7 to 7.5	Red, Blue, Green, Yellow, Brown, Black	California, Siberia, Ceylon, Ava, Brazil

Chart for Birth Stone

Chart for Birth Stone

Month	Stone	Month	Stone
January	Garnet	July	Ruby
February	Amethyst	August	Peridot
March	March	September	Sapphire
April	Diamond	October	Opal
May	Emerald	November	Citrine
June	Pearl	December	Topaz

The Gem Stone

The gem stone means that stone which is most important and precious and also very heart liking with respect to hardness, colours, and shine. Knowledge of gem stone is that knowledge which provide the information about its characteristics, importance, benefits as well its identity.

There are Levels of gemstones!

1st Level
2nd Level
3rd Level

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