Diamond Glossary
Diamond Glossary:
Knowledge is Power and the more information you have the better diamond purchase you will make. Here are a number of diamond terms that are used by jewelers to describe diamonds and which appear on diamond grading reports.
Blemish: A surface or inherent clarity characteristic of a diamond.
Brilliance: A phenomena unique and powerful in diamonds is the extent to which a diamond can reflect light. This "brilliance" is created when light enters through the diamonds table, reaches the pavilion facets, and is then refracted back out through the table to your eye.
Carat: A unit of weight by which a diamond is measured.
Clouds: A cluster of very tiny imperfections within a diamond. These imperfections will often take on a transparent cloudy look, and will require extremely high magnification in order to be seen.
Color grading: A grading method system by GIA used to determine the colorlessness of white diamonds.
Crown: The portion of the diamond above the girdle.
Crown angle: The angle where the diamond's bezel facets intersect with the girdle plane. The positioning of these facets is critical in determining the amount of light dispersion and fire in a diamond.
Culet: A flat facet diamond cutters add to the bottom of a diamond's pavilion. The purpose of the culet is to protect the integrity of the pavilion from chipping and fractures. Once a diamond is set in jewelry the purpose of the culet is generally negated as the setting will provide adequate protection for the stone. Most modern diamond shapes have either no culet, or very small pointed culet.
Cut: Refers to the proportions as well as the polish and finish of a faceted diamond. Cut is the most important of the "4 C's and is critically instrumental in determining a diamonds beauty and value.
Depth: The height of a diamond from the culet to the table. Depth is measured in millimeters.
Depth percentage: Refers to the relation between how deep and how wide the diamond is. Depth percentage plays a role in determining the brilliance and value of the diamond.
Diamond: A crystallized carbon made up of 99.95% pure carbon atoms in an isometric or cubic arrangement.
Diamond cutting: The method whereby a rough diamond mined from way beneath the earth's surface is polished and faceted into a magnificent diamond. The diamond must go through a long and arduous process of many different steps until it is considered a completely finished gem.
Dispersion: The effect that properly angled and placed facets have on the diamond's ability to display fire.
Eye clean: A term used in the industry to describe a diamond with inclusions that cannot be seen with the naked eye.
Facet: The various smooth surface areas of a diamond set up and positioned at different angles, allowing light to enter the stone and reflect back to your eye. A round brilliant diamond has a total of 58 facets.
Feathers: are the small stress fractures in a diamond formed during its crystallization process. Feathers will pose no risk to the durability of the diamond once that stone has survived the rigors of its crystallization, mining, and cutting process.
Finish: This refers to the quality of how the diamond cutter executed the designing, fashioning, and faceting of the diamond.
Fire: (or Color Light)This refers to the percentage of the diamond returning bright colored light to the observer.
Fluorescence: This refers to an effect seen in diamond when exposed to long wave ultra violet light. Fluorescence is undetectable in most lighting conditions and can only be seen when placed under an intense and direct ultra violet lamp. Fluorescence has no deleterious effect on the integrity of the diamond. Some prefer Fluorescence in diamonds, others do not. It is a matter of personal taste. Fluorescence in lower color diamonds posses a unique desirability as they will make diamonds appear whiter than their actual color grade.
GIA (Gemological Institute of America): Was founded in 1931 as a non profit organization and is considered to be the standard bearer of the diamond grading industry with the strictest, most stringent diamond grading criterion. The grading system developed by the GIA has become the standard system used today by grading labs across the world.
Girdle: The outer ring of the diamond is called the girdle. The girdle is described by its thinnest and thickest points.
Inclusion: An intrinsic clarity characteristic found within diamonds.
Naturals: Small particles of the original rough diamond's surface which remain on the polished diamond.
Pavillion: This refers to the lower portion of the diamond underneath the girdle.
Point: Refers to a measurement describing the weight of a diamond. One point equals one hundredth of a carat.
Polish: This refers to a diamond's surface blemishes which do not affect its clarity grade such as polishing lines or scratches. Polish is graded on laboratory reports as either ideal (AGS) excellent, very good, good, fair, or poor (GIA).
Scintillation: This is the term for changing colours, the radiance and sparkle of the rays when the stone is moved or when the light source changes. The GemEx Brilliancescope ™ analyzer that we use for all of our diamonds measures the number of light points and determines how they change from position to position.
Symmetry: Variations in a diamond's symmetry such as misshapen or misaligned facets are graded in the laboratory report. Although such variations are often undetectable to the naked eye, it is certainly indicative of a diamonds cut quality.
Table: percentage Represents the diameter of the table facet in relation to the diameter of the entire diamond.
TrackBack
TrackBack URL for this entry:
Comments
Hi, I love you blog. I'm glad Yahoo showed it the serps. I was able to get the knowledge I was searching so badly for days now.Thank You so much for your really good post. Best regards.
Posted by: Migraine Poseidon on March 31, 2011 9:13 PM
Wow, what a blog! I mean, you just have so much guts to go ahead and tell it like it is. Youre what blogging needs, an open minded superhero who isnt afraid to tell it like it is. This is definitely something people need to be up on. Good luck in the future, man.
Posted by: fluval filters on March 31, 2011 10:52 PM
I must say, as much as I enjoyed reading what you had to say, I couldnt help but lose interest after a while. Its as if you had a great grasp on the subject matter, but you forgot to include your readers. Perhaps you should think about this from more than one angle. Or maybe you shouldnt generalise so much. Its better if you think about what others may have to say instead of just going for a gut reaction to the subject. Think about adjusting your own thought process and giving others who may read this the benefit of the doubt.
Posted by: Asda Travel Insurance on April 1, 2011 1:49 AM
The Zune concentrates on being a Portable Media Player. Not a web browser. Not a game machine. Maybe in the future it'll do even better in those areas, but for now it's a fantastic way to organize and listen to your music and videos, and is without peer in that regard. The iPod's strengths are its web browsing and apps. If those sound more compelling, perhaps it is your best choice.
Posted by: Cheap NFL Jerseys on April 7, 2011 1:49 PM
Apple now has Rhapsody as an app, which is a great start, but it is currently hampered by the inability to store locally on your iPod, and has a dismal 64kbps bit rate. If this changes, then it will somewhat negate this advantage for the Zune, but the 10 songs per month will still be a big plus in Zune Pass' favor.
Posted by: cheap asics shoes on April 12, 2011 2:23 AM
Between me and my husband we've owned more MP3 players over the years than I can count, including Sansas, iRivers, iPods (classic & touch), the Ibiza Rhapsody, etc. But, the last few years I've settled down to one line of players. Why? Because I was happy to discover how well-designed and fun to use the underappreciated (and widely mocked) Zunes are.
Posted by: Cheap rosetta stone on April 12, 2011 7:34 AM
200,000,000,000? Are there that many people on earth?
Posted by: Cheap Christian Louboutin on April 15, 2011 3:47 AM
Thanks to you, I discovered the info I needed to solve my problem. I will keep you posted of my progress. Nice website by the way.
Posted by: Simple Cure on April 16, 2011 11:08 AM
I saw something as well about th is on various blog site internet site.Amazingly, your linear perspective on it is diametrically opposite to what I study previously. I am still attempting to figure out about the opposite points of view, but I'm tipped strongly toward your level of view. And regardless, that is certainly what is so terrific about modern-day democracy as well as marketplace of ideas onthe world wide web.
Posted by: Christian Louboutin on April 16, 2011 2:09 PM
I just couldnt leave your website before telling you that we really enjoyed the useful information you offer to your visitors... Will be back often to check up on new stuff you post!
Posted by: MP3Mixx on April 21, 2011 4:44 AM
Obtain very best dealsprices and save revenue on KitchenAid Professional 5 Plus 5Quart Stand Mixer for 248 free shipping.
Posted by: Cheap Christian Louboutin on April 21, 2011 12:31 PM
Thank you so much, great submit! Th is was the point I needed to know.
Posted by: Christian Louboutin on April 22, 2011 7:29 AM
There is obviously a great deal for me to ascertain exterior of my books. Thanks for the superb read,
Posted by: Rosetta stone spanish on April 22, 2011 3:04 PM
I wonder how did new msn logo get into the worst l ist?
Posted by: Christian Louboutin on April 23, 2011 1:58 PM
Hiya, I'm really glad I have found this info. Nowadays bloggers publish only about gossip and internet stuff and this is actually irritating. A good web site with exciting content, this is what I need. Thanks for making this website, and I will be visiting again. Do you do newsletters? I Cant find it.
Posted by: Maggie Bottoms on April 24, 2011 5:26 PM
good blog! keep up the terrific perform!
Posted by: Rosetta stone languages on April 25, 2011 3:29 PM
Good day! I simply want to give an enormous thumbs up for the good data you've here on this post. I will be coming again to your weblog for extra soon.
Posted by: Aquaponic System on April 29, 2011 9:40 PM
[...] hey there and thank you for your info – I have definitely picked up anything new from right here. I did however expertise some technical issues using this site, since I experienced to reload the website lots of times previous to I could get it to load properly. I had been wondering if your web hosting is OK? Not that I'm complaining, but slow loading instances times will sometimes affect your placement in google and could damage your high quality score if ads and marketing with Adwords. Well I am adding this RSS to my email and can look out for much more of your respective interesting content. Make sure you update this again very soon. [...]
Posted by: Oxfordshire Estate Agent on May 5, 2011 10:01 AM
Hmmm. I'd have thought that pepsi would allow it to be for the worst of 2009 as well.
Posted by: asics shoes on May 5, 2011 11:11 PM
Wow! This information was truly valuable to me. Ill be coming back to your blog.
Posted by: beats headphones on May 8, 2011 4:44 AM
Very good luck finding men and women behind this 1. Though you make some Quite fascinating points, youre going to need to do a lot more than bring up a couple of things that might be diverse than what weve already heard. What are attempting to say here? What do you would like us to feel? It appears like you cant really get behind a special thought. Anyway, thats just my opinion.
Posted by: panoxyl on May 9, 2011 8:17 AM
I kinda like this blog. For a while, I've been attempting to create one something like this as effectively, nonetheless I'm not computer gifted on find out how to do it.I kinda like this blog. For a while, I've been making an attempt to create one something like this as well, nonetheless I am not pc gifted on easy methods to do it.
Posted by: electrical fireplace on May 21, 2011 11:50 PM
Hi. this is type of an -unconventional- question , but have other visitors asked you how get the menu bar to look like you've got it? I also have a weblog and am actually seeking to alter around the theme, even so am scared to death to mess with it for fear of the search engines punishing me. I'm very new to all of this ...so i am just not positive precisely the way to attempt to to it all but. I'll just maintain working on it one day at a time.
Posted by: zhu zhu pets on June 4, 2011 6:46 PM
Wow, what a weblog! I mean, you just have so much guts to go ahead and tell it like it's. Youre what blogging needs, an open minded superhero who isnt afraid to tell it like it's. This is undoubtedly something folks have to be up on. Excellent luck inside the future, man.
Posted by: Boots Travel Insurance on June 5, 2011 6:36 AM
Your blog is fine. I just wish to comment on the style. Its too loud. Its performing way an excessive amount of and it takes away from what youve got to say --which I believe is truly critical. I dont know if you didnt think that your words could hold everyones attention, but you had been wrong.
Posted by: panoxyl on June 5, 2011 1:19 PM
I was looking for vital details on this subject. The data was crucial as I'm about to launch my own portal. Thanks for providing a missing link in my business.
Posted by: Ski Travel Insurance on June 5, 2011 11:11 PM
Nice to be visiting your weblog again, it has been months for me. Nicely this write-up that i've been waited for so lengthy. I require this write-up to complete my assignment within the college, and it has same topic with your post. Thanks, fantastic share.
Posted by: panoxyl on June 6, 2011 3:05 AM
Have you ever considered publishing an ebook or guest authoring on other sites? I have a blog based on the same information you discuss and would really like to have you share some stories/information. I know my viewers would enjoy your work. If you are even remotely interested, feel free to send me an email.
Posted by: Patty Callicutt on June 9, 2011 12:27 PM