And don't forget; Valentine's day is... what... 3 weeks away? If you want to get anything custom done you better get here soon!
(Fabulous Aquamarine Bracelet)
Until next time!
Tyler
Assistant Director of Marketing
Monday, January 26, 2009
Our first post....
...and it's bad news everyone! Just this past weekend we had to close our sister store in Grove City, Gibboney Jewelers. Sad, I know, but there is a bright side! We now have a ton of 'new' merchandise at The Diamond Exchange to choose from for Valentine's Day. Seriously, we have mountains of new jewelry; mostly gold bangle bracelets and gemstone pendants, but there are also a few diamond pendants and a gorgeous aquamarine bracelet! It took me forever to get it all into inventory, so don't let my efforts be in vain! Stop in soon to see my decadent ability to merchandise!
And don't forget; Valentine's day is... what... 3 weeks away? If you want to get anything custom done you better get here soon!
(Fabulous Aquamarine Bracelet)
Until next time!
Tyler
Assistant Director of Marketing
And don't forget; Valentine's day is... what... 3 weeks away? If you want to get anything custom done you better get here soon!
(Fabulous Aquamarine Bracelet)
Until next time!
Tyler
Assistant Director of Marketing
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After analysing thousands of diamonds, DCLA has developed a new Transparency grading system, independent of other quality grades listed on the traditional diamond certificate.
ReplyDeleteTransparency is the degree to which a material transmits light, directly relevant to the cloudiness or haziness of the material.
Diamonds of any clarity, fluorescence and cut can in fact have Very Good or Excellent Transparency, making them attractive stones. Diamonds of any clarity, fluorescence and cut can also have Good or Medium Transparency - light return can be interrupted by multiple features of a given diamond.
The DCLA Transparency Grading System will now take all of these features into account to provide an even more comprehensive assessment of a diamond.
DCLA Transparency Scale:Excellent - Completely transparent, no light interruption, no haze or cloud
Very Good - Transparent, minimal light interruption, very light haze or cloud, difficult to detect
Good - Transparent, slight visible haze or cloud, detectable
Medium - Semi-Transparent, marked light interruption, moderate haze or cloud, easy to detect
Poor - Semi-Transparent, very little light passes through, heavy haze or cloud
Effective September 15 2008, all DCLA Diamond Certificates will include the diamond transparency.
In addition, the DCLA has also split the traditional Finish grade on our Diamond Certificate into the dual features of Polish and Symmetry. This will provide a fuller, more detailed expression of the overall diamond make to both consumers and the trade.
DCLA identifies Treated Pink Diamond
ReplyDeleteRecently, a pink coloured diamond weighing 0.70ct was submitted to DCLA laboratory for certification and colour authentication. The colour was described as 3 PP on a diamond report issued by another Australian-based laboratory.
After routine examination however, DCLA discovered that when the diamond is viewed under high magnification with reflected diffused light, a patchy iridescent coating is visible on the surface. This coating is also easily visible on the pavilion facets of the diamond when viewed through the table. However, when the diamond is observed under magnification with regular diffused light, the pink coloration appears evenly distributed, particularly when viewed face up.
The pink colour is the result of a coating rather than from natural lattice defects in natural pink diamonds. Surface coating is the process of adding a thin layer of coloured foreign material to all or part of a gemstone's surface, with the intent of either masking the underlying body colour or enhancing a desirable colour. Most often, this coating is applied to the pavilion and/or girdle of the diamond; the way that light refracts as it passes through a diamond creates the illusion of uniform colour distribution.
The durability of diamond coatings vary considerably, depending on materials used and methods of coating applied. Most recent advances in technology employ a very thin optical or chemical film which is more durable than older methods, but still readily worn away by heat, scratching, abrasion, polishing, and just everyday wear.
Coating is a deceptive practice; we do not know the number of coated pink diamonds which have entered the marketplace, but the DCLA has seen a number of treated stones of late. Of particular concern is when such treated diamonds are accompanied by seemingly legitimate reports or paperwork.
DCLA screens every diamond submitted to the laboratory for all known treatments, and will not issue a diamond certificate for treated or synthetic diamonds.
Fluorescence is a natural characteristic which causes many diamonds to glow under ultra violet light (UV), this is abundant in natural daylight and some artificial lighting.
ReplyDeleteFluorescence is caused by sub-microscopic structures within the diamond. Diamonds can have various colours of fluorescence, with blue being the most common.
Yellow Fluorescence can sometimes indicate a Cloud which is cluster of pinpoint inclusions creating a hazy or milky area in a diamond. A diamond cloud can range from extremely sparse and faint, to dense and heavy.
Clouds may also be small and localised, or spread throughout an entire diamond and affect the transparency.In most diamonds, Fluorescence will not have a negative affected the brilliance or transparency of the diamond.
Diamonds which are lower in colour look whiter if they have medium to strong blue Fluorescence and are very desirable.