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Table of Contents

About The Book

Copyright

About The Author

Four Parameters

Parameters- Color

Parameters - Clarity

Parameters - Cut

Parameters - Carat

Conclusion

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About The Book

It is extremely difficult to choose a natural gemstone rather than wearingit. There are ample numbers of factors which need to be taken into theaccount while purchasing a gemstone. Usually, a person due to lack ofawareness is compelled to buy a synthetic gemstone by counterfeitgemstone dealers. Nevertheless, if you are heading toward to buy anatural gemstone, so in that case the following article will assist you inpurchasing a right gemstone.

In this book you will come to know about the gemstone grading systemused to specify the quality of the gemstone. That will help you to choosea gemstone of high quality.

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Copyright

Author

9Gem.com

Editor

9Gem.com

Copyright © 2015 9Gem.com

This book is only for the guidelines for the gemstone buyers.

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About The Author

Since 2003, 9Gem has been selling gemstones to customers all overthe world. We've had the pleasure to provide quality gemstones tojewelers and gemstone collectors. Handling more than 2000 dealers atB2B Level and Lacs of loyal satisfied customer are part of our successfuljourney. We are glad to be a part of your jewelry making experiences anddesigns. We are very grateful for the long-standing relationships we'vebuilt since 2003, including many of the world's finest jewelry stores,designers, artists, suppliers, re sellers and astrologers. 9Gem servesmore than 4000 and counting merchants including leading eCommercecompanies.

Website: www.9gem.com

Phone: +91-9216116688

USA : 646-807-3800

Customer support: info@9gem.com

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Four Parameters

The quality of a gemstone is graded principally upon the following fourparameters Cut, color, clarity and carat. Hence, these are the key criteria’swhich are meticulously evaluated in order to grade a gemstone. Thus, wewill discuss below all four essential factors in detail below.

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Parameters- Color

Color: The value of a gemstone primarily depends upon its colorcharacteristics. In the context of colors, there are three primary colorsred, green, blue and three secondary colors (purple, orange and green).These colors are mixed proportionally to obtain new colors. Usually, thecolors which are visible to us are mixture of these primary andsecondary colors. Apart from this, Saturation, Hue and tone of the colorsalso hold quite an importance while grading a gemstone.

Saturation: It means the colorfulness of a color relative to its ownbrightness. The saturation of a color will be decided by a combination oflight intensity and how much it is distributed across the spectrum ofdifferent wavelengths. The purest color is obtained when a singlewavelength passes through the spectrum of light assist in obtaining ahigh quality or graded gemstone. However, if the intensity of thewavelength decreases, so as the saturation decreases, consequently, thegrade of the gemstone also been affected.

However, it is impossible to obtain a 100 percent Saturation in nature,but higher the saturation, consequently, the price of a gemstone will behigher.

Hue: Hue of a color is described to be the pure color without any

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inclusion and tint. In addition to this, it generally means that how ourbrain perceives specific colors red, green and blue. The different huesare considered to have different wavelength in the spectrum.. The red,green, purple, blues are defined to have perfect hue. However, the hue ofa color changes according to fashion. So, the gemstones which reflectsrich amount of color such as red, green, purple and blue are regarded ashigh graded color gemstones.

Tint: When a color is added with white that is being called tint. It hasbeen said occasionally about tint that lesser the tint betters the hue ofthe stone and lesser the saturation. So, a gemstone with fewer tints isregarded to be high color graded gemstone.

Grading of a color: color grading in the context of the gemstones, meansthat what is the strength of the main color persist in a gemstone? Forexample, if it is a blue sapphire stone, so while evaluating this gemstonespecifically on the color grading parameter. It is being evaluated that inwhat quantity the blue color persist in the stone. Fortunately, if thequantity of blue color is 100 percent in the stone, it will be regarded asthe natural blue sapphire stone. However, it is almost impossible to spota gemstone without any inclusion. Nonetheless, in that case a stone withlesser number of inclusions being confirmed the high quality gemstone.

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Parameters - Clarity

Clarity: After color the other parameter which holds paramountimportance while grading a gemstone is considered to be the clarity ofthe stone. More precise definition of clarity is that a gemstone withoutany inclusions or with “few inclusions” “large inclusions”. However, inorder to perceive the more accurate and precise results generally thegemstones are categorized in the following categories on the basis ofnumber of inclusions.

FL: These gemstones are completely internally flawless and free of anyinclusions. Even, under the 10 X magnifier no as such inclusion can bespotted.

VVS: It stands for (very very less) inclusions. It is a cumbersome task tospot a flaw in vvs gemstones as these are completely flawlessgemstones. However, in order to find any inclusion in the stone, 10 mxmagnifier is used which barely reflects any flaws.

Vs Inclusion: These stones contain slight inclusions which can be caughtby under the 10x magnifier or by competent gemstone experts.

SI: It stands for slightly included inclusions in the stone which can bemeasured with an experienced pair of eyes or under the magnifier.However, in comparison to VVS, VS, the stone which lies under thiscategory are slightly low in quality.

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I1: These gemstones are highly influenced with external inclusion andquantity of the inclusions are such high so that it can be spotted withbare eyes.

Transparent: The stone which possess the quality of transmitting thelight through it without any diffusion or bare infusions are regarded to bethe transparent gemstone.

Translucent: Hence, the stone allows passing the light through it.However, the stone is not revered as “transparent”.

Opaque: the gemstone which does not let the light to travel or passthrough it.

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Parameters - Cut

Cut: A gemstone is extracted from the mines or from deep forests thus,they appear dull and asymmetric. However, in order to use thesegemstones for jewelry purposes. These gemstones are introduced to cutinto different shapes considering in mind the inclusions in the stone. Arough gemstone is needed to cut because the stone which are extractedfrom mines are immensely large in size. So, the process to make agemstone assume a certain shape, size, bringing out its luster and shineand enabling the stone to be embedded in jewelry the whole process willbe aggregate called cutting of a gemstone.

However, cutting a gemstone is quite different from cutting a diamond.While cutting a gemstone, it should not be cut generally in uniformshape because a gemstone possesses certain inclusions and propertieswhich should be maintained while cutting a gemstone. Thus, a gemstoneis cut in such an ideal manner so that it possesses its original qualitiesand exhibits its original color, an acceptable number of inclusions and itsscintillating brilliance.

Typically, the gemstones are cut in two ways, either in faceted gems(gems with geometrically shaped flat polished faces) and non-facetedgems (those gem that do not have geometrically shaped flat polishedfaces such as Cabochons). A rough gemstone is authorized to be cut bythe gemstone cutter with minimum two years of experience.

Types of Cut: The followings are categorized to be the best types of cut,

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which a rough gemstone can be received.

Oval Cut: The rough stone securing this type of cut is regarded to be thebest type of cut gemstone. As, the stone which receives this type of cutlook apprehensively beautiful. However, not all gemstones can perceivethis type of cut because the cut of the stone principally depends uponthe shape of the stone, inclusions and aesthetic values.

Round Brilliant Cut: Round brilliant cut gemstones are announced to bethe best quality of cut which a gemstone can perceive. It is alsoacknowledged to be the American standard cut. However, nobody inreality knows about who is the real inventor of this cut. Although, this cutis extremely famous because it essays 57 faceted. The diamond chieflyperceives the round brilliant cut treatment. Usually, the benefits of theround cut are that it uniformly divides the facets of the stone and alsoenhances luster and shine of the gemstones. However, earlier this cutwas not only practiced on diamonds, but nowadays gemstones areobtaining this treatment.

Baguette Cut: Baguette cut gemstones have 20 faceted. This cut has beenexercised upon rough gemstones, especially for Tourmaline.

Square Cut: Square cut stone has at least 57 facets. Basically, this stonehas to be cut in step by step procedure to achieve a perfect square cutstone. Most oblong cuts are step cut means the stone has to cut in stepsjust like a pyramid with its top chopped off. Usually, the stone withsquare cut denotes justice, equality, truth and satisfaction.

Trilliant Cut: The number of facets of trillion cut stone has been countedaround 43. A trillion cut stone is triangular is shape. Due to the excellentway of cutting the stone from the corners the stone reflects brilliant lightand lusters from corners. Moreover, because of its high lusteringcharacteristics this gemstone is popular among the gemstones buyers.The gemstones like emerald, aquamarine, diamond and white sapphirereceives hugely this cut as they possess a brilliant luster and shine.

Pear Cut: This type of cut is a hybrid cut gemstone which possesses atleast 71 facets. Moreover, the pear cut stone is a combination of oval cutand marquise cut, it shaped like a teardrop. The pear cut gemstoneresembles high brilliance and luster. The pear cut stone looks elegantand compliments neck highly when adopted in the form of a necklace or

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pendant.

Octagon Cut: The octagon cut gemstone usually have 53 facets. As likesquare cut stone, it is also cut in steps.

Emerald Cut: The emerald cut gemstone also falls in the category of stepcut stone. Generally, the emerald cut gemstone has approximately 50facets which enable it look apprehensively brilliant with stepped cases.The shape of the stone which has perceived emerald cut resemblessquare shape with stepped increment.

Marquise Cut: The stone looks like a rugby ball and it has got 57 facets. Inaddition to this the marquise cut gemstone is also called “Navette Stone”resembles alike a stretched oval shape. The marquise cut stonebequeath excellent brilliance and luster.

Antique Cushion Cut: The number of facets of this stone is around 64.Additionally, this stone is revered as “pillow cut stone” or “candlelightstone cut” in reference to cuts designed prior to electric lights. This stonealso means as “classic” stone.

Princess Cut Stone: In comparison to other cuts; this cut has introducedin recent times. The number of facets of princess cut stone is around 76.Importantly, the princess cut stone is not only bound to diamond,though, it is used primarily for gemstones. Due to its high brilliance, it isprincipally used for engagement rings, wedding rings etc.

Mirror Cut: Mirror cut stones were used since ancient times to cutgemstones. It is also regarded to be the “thin stone”. Due to its excellentluster and shine it was used in earlier times to polish diamond and cutrough gemstone.

So these are the main types of cut which a gemstone can perceive.However, apart from this there are other cuts which can be exercisedupon the gemstones like: Concave cut, Millennium cut, Cabochon cut,Buff cut, Briolette cut.

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Parameters - Carat

Carat: Except cut. Color, clarity, the other extremely important parameterwhich we do need to consider while grading a gemstone is carat. Carat issupposed as a unit of mass which is used in measuring gemstones. Itwas found that the unit carat come in existence around1920.Additionally; one carat is equal to 200 mg. Apart from otheressential parameters the weight of the stone also holds paramountimportance while grading a gemstone. The weight of the gemstone alsomakes an impact over the price of the gemstone. Hence, as the carat ofstone increases in same proportion the price of the stone will alsoincrease.

Apparently, a rough gemstone carries much weight which need to bescaled down by eliminating the redundant materials persisting inside thestone for example: separating inclusions from a stone. As a result of this,the size of the stone and the appearance of the stone enhancesbrilliantly. Instead of this, it is not mandatory to purchase a high caratstone. Although, you are advised to purchase a gemstone by keeping inmind your budget, since due to the advancement in technology,nowadays, a gemstone with lesser in carat even appears elegant andsuppose to bestow all the benefits which a person seek from agemstone.

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Conclusion

By this we come to the end of this post. The core intention behindwriting this article is to invoke awareness among laymen about howgemstones are graded or what are the useful parameters which affectsthe grade or quality of the gemstone?. Another important thing whichyou should keep in mind after reading this article is that you cannotafford to buy an expensive or much carat gemstones since thesegemstones are quite expensive. Thus, in order to maintain balancebetween gemstones and price. While shopping a gemstone, you need tofind that which gemstone suites you most and above all does it fits inyour budget?.

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