You should not failure the possibleness to buy a 
  |
3.00 cttw 14K White Gold Plated 925 Sterling Silver Trillion Simulated Emerald Earring Studs Brand : Star K Model : 302766 |
List Price : Check lowest prices!
|
  
|
New Twelvemonth is blest with a Simulated Emerald Earrings, right propertied and of this measure period.
We screw chosen the Simulated Emerald Earrings. Many of the Simulated Emerald Earrings and you will equal it. For your facility, you do not condition to be complicated. Reach a Simulated Emerald Earrings from one to anymore. The Simulated Emerald Earrings is punter and cheaper here then.Unfortunately most media publications are usually designed to sell articles, and thus often do not contribute consumers with a true picture of the commercial reality and availability of lab-grown diamonds. Further, many sellers of diamond simulants (stones that look similar to diamond, but are not real diamond) exploit this knowledge gap as a way to deceptively sell their simulants as 'lab-grown diamonds'. As the president of a enterprise that has been involved with both lab-grown diamonds and diamond simulants for over seven years, and having seen the confusion many of these less than factual articles have caused, I wanted to help contribute customers with an commerce insider estimate of what is and is not commercially available, and help educate those who are unquestionably seeing to buy a true lab-grown diamond. Thus, we begin a short tour of myth vs. Reality in the lab-grown diamond store (circa 2007).
Simulated Emerald Earrings
First and foremost, lab-grown diamonds (real diamond, but not mined) are in fact available for jewelry purchase, but on a wee basis. The needful catch though is this - when most people think of a diamond, they automatically think of white diamonds. As of October, 2007, no one is currently able to offer white (colorless) lab grown diamonds for sale on any type of output basis. Regardless of what assorted reporters write, the reality is only fancy color diamonds (predominantly yellow, and to a much lesser degree, pink and blue) are available.
The hypothesize for that gap in the middle of what consumers want (white lab-grown diamonds) and what labs can deliver (mostly yellow lab-grown diamonds), is due to both commercial value and natural barriers. Lets discuss the natural wall first - yellow diamonds are yellow because they join nitrogen into their crystal structure. White diamonds are white (or clear) because they have much less nitrogen in their crystal structure. When growing diamonds, however, nitrogen is a catalyst - it significantly speeds up diamond growth, and in expanding reduces defects. Thus, you can grow a 1ct (finished) yellow in roughly one week, versus growing the same size white (by restricting nitrogen) can take you 4-6 weeks (using Bars method, the default formula currently). In other words, nitrogen can help you grow up to 6x as much yellow diamond as white in the same estimate of output time. That's a tough natural barrier.
The commercial barrier, is that yellow natural diamonds are worth much more than white natural diamonds. In nature, there are roughly 10,000 whites for every fancy yellow. Thus, fancy yellows command a much higher price per carat. Lab grown diamonds typically sell at a reduction but are still pegged to their natural counterparts, and since yellow diamonds are worth more than whites, the absolute selling price for lab grown yellows is higher than what the store will pay for lab grown whites.
Now, if you join the fact that labs can grow yellows much more fast and unquestionably than whites, and that yellow diamonds (lab grown and natural) supplementary command higher prices than whites, you can see you have a severe dis-incentive to produce white diamonds with the current technology. White diamonds can and have been produced by labs (we have some sample photos on our website) but they are not price competing with natural white diamonds at this time. Hence, a very big hypothesize for why there are currently no white diamonds available for commercial sale.
These fundamental reasons are typically not explained in most published articles about lab grown diamonds, and many articles typically leave the reader with the exact opposite impression, that white lab grown diamonds are plentiful and cheap (remember the /ct quote from Wired magazine?). assorted unethical simulant (Cz) makers have utilized this confusion to deceptively advertise their imitation diamonds as being "flawless man-made diamonds", "perfect lab-grown diamonds", etc. All for the low price of 0/ct. And based on emails we've received from customers, people have been tricked into buying plain Cz, after being told it was a 'lab grown white diamond' and having seen articles discussing the advent of lab-grown diamonds being available.
There are two easy ways to avoid being suckered into unethical advertising like that. First of all, the price. To cut a 1ct concluded diamond, you need in the middle of 2-3 carats of rough diamond to start. Cutters payment by the carat for their cutting work, and 0-0/ct is a common rate. That means even if the diamond material were free, a distributor would still have to payment at least 0-0/ct just to break even on the cutting cost. And obviously, the lab grown material is not free and the distributor would like to make a behalf instead of break even, so if you see a distributor selling 'cultured diamonds' or 'man-made diamonds' for less than some hundred dollars per carat, you can be assured it is not real lab grown diamond, regardless of what claims they make. Currently, lab-grown yellow diamonds are selling for colse to ,000/ct. And remember, yellows are produced up to 6x faster than whites, so you are unlikely to see lab grown white diamonds selling for much less than that in the hereafter unless someone figures out a much faster way to grow diamond.
The second way to protect yourself, for lab-grown diamonds of any size (i.e. .30ct and higher), is to only buy a lab-grown diamond that comes with a certificate from an independent lab. Just like natural diamonds, virtually all major gem labs now offer grading reports for lab grown diamonds (including, as of this year, the Gia). They are basically the same reports as they issue for natural diamonds, but with the origin listed as "lab-grown". If there is no certificate with a 'man-made diamond' of any real size (i.e. .30ct or larger), and the distributor declines to contribute one when asked, then you can also be pretty sure its a simulant being called a lab-grown diamond.
Checking for the price and the grading certificate can ensure you are dealing with an ethical distributor of lab-grown diamonds. We've seen many a customers whose hopes were dashed after we explained that the 0 pair of 'man-made diamond' earrings they bought were in fact nothing more than deceptively advertised Cz. Don't fall into that trap.
Another common myth about lab-grown diamonds is that all lab grown diamonds are 'perfect' or flawless. As noted, the current default technology for growing diamonds (Bars method) is simply replicating the high-pressure and high-temperature present under the earth, and doing it above ground (sometimes with supplementary catalyst to lower the needful temperature/pressure required). And just as diamonds from under the earth have flaws, diamonds grown above the earth also have flaws. It is a more precise analogy to think of growing diamonds (using current technology) as diamond-farming, rather than diamond manufacturing. Just like farming, you plant a seed, and try to optimize the increase conditions, but you no more get a excellent diamond than a farmer all the time gets a excellent tomato. In fact, sometimes after a week is up, the chamber is opened and no diamond has grown at all...so it is no where near the 'push a button, out pops a excellent diamond' that many people think. Similarly, labs cannot customize how the diamond grows to be a specified shape (i.e. Pear or emerald cut) - you get what you get, and cut to optimize the yield of each crystal.
That being said, it is true that most lab grown diamonds (especially yellow diamonds) are slightly harder than their equivalent natural diamonds. In yellows, this is due to the nitrogen being more perfectly dispersed, and Carbon-Nitrogen bonds are slightly stronger than Carbon-Carbon bonds. This is also one way labs with Raman equipment can detect man-made versus natural yellows - in yellow naturals, nitrogen is clumped, versus it is quite evenly dispersed in lab-grown yellow diamonds.
The next myth - lab grown diamonds can all the time be produced, so their prices will continue to drop vs. A natural diamonds will keep going up. Currently, gem grade, lab-grown diamonds are in fact substantially rarer than natural diamonds if you compare every year production. While white diamonds are being mined in tens of millions of carats per year, lab grown whites are virtually non-existent except for research samples, and yellow lab grown diamond output is measured in thousands of carats. And because growing lab diamonds is still hard, prices for lab grown diamonds have slowly gone up, not down because there is only so much output available even as question has increased due to public awareness.
One more reality about lab grown diamonds - size. Currently, most diamond increase chambers are unable to grow larger than 3ct piece of rough (sometimes 4ct) and thus, after cutting, most lab grown diamonds are 1.5ct or smaller (frequently smaller after accounting for flaws being cut out). The hypothesize for this is that in order to grow a diamond using the appropriate Hpht (high pressure, high temperature) technology, you have to place an area under very high pressure and temperature. The larger the area you are trying to voice these greatest conditions, the harder it gets..exponentially harder, in fact, because the pressure at the center is magnified due to leverage. The parts applying the pressure themselves have a wee lifespan, as they will finally crack and fail, and need constant replacement. Thus, most labs have not tried to go beyond the 3ct size increase chamber as it does get exponentially harder to voice the same pressure for a larger area, and that is one hypothesize why no one is gift 6ct concluded yellow diamonds for sale.
With the reality check done, we'll end this report on a obvious note - even with all the problems, costs and issues that still hamper lab-grown diamond production, colored lab-grown diamonds do offer people the ability to own and wear very high-end, fancy color, real diamonds at a fraction of the natural price. We'll emphasize that these are still real diamonds - chemically, optically, physically, and of policy will pass any test for being diamond (since it is diamond, the place where it was grown is the difference). Most lab grown colored diamonds are vivid in color, meaning they are among the most needful color grades as compared to natural colored diamonds. For example, one of the first lab-grown diamonds we ever sold was graded a 'fancy vivid orangy yellow', and was initially appraised as a natural diamond, valued at ,000 by a major lab (we had informed them we were submitting a lab grown diamond btw). We then received a very panicked call the next day from the same lab, who after running a Raman determination on it realized it was a man-made and not natural diamond (due to the nitrogen being so perfectly dispersed). We sold that same diamond for 00. Similarly, most of our pink lab-grown diamonds also grade fancy vivid pink, and if they were mined instead of lab-grown, could sell for as high as 0,000/carat...we sell them for colse to ,000/ct, but unfortunately due to low contribute (production difficulties) are sold out most of the year. Nevertheless, the lucky few customers who do buy a lab-grown pink have a lot of fun walking into their neighborhood jewelry store and seeing the jaws drop. It is also usually the first time their jeweler has seen a real lab-grown diamond in person, again due to the relative rarity of true lab-grown diamonds. They are very gorgeous and leave most natural fancy color diamonds (who are usually less intensively colored) seeing pretty bland by comparison.
Technology continues to improve, and hopefully over the next few years, there will be supplementary breakthroughs in lab grown diamond technology. One of the most promising areas is growing diamonds by mimicking how they (theoretically) grow in outer space. This is by using ultra-low pressure, plasma and high temperature, often called plasma vapor deposition. Because it does not need the high pressure, chamber sizes are much larger and in theory, much larger pieces of diamond can be grown. Conditions are more controllable as well, due to the diamond growing by in a more nano-technology like environment (carbon-rich gas is shredded at the molecular level, and the carbon atoms then reassemble on the diamond seed below). The trade off is the machines to do this often run in the middle of 0,000-0,000 each, and a host of supplementary problems not present in high pressure increase regimes come into play in this new increase environment..but hopefully in the hereafter these will offer a new formula for growing lab-grown diamonds.
Now that you are armed with commerce insider knowledge, you'll be able to facilely avoid the scams that so many unethical diamond simulant sellers use by playing on the publics (and even the medias) ignorance of the realities of man-made diamonds. Hopefully, you'll also comprehend that the constant claims that DeBeer's or other soldiery are to blame for the lack of lab-grown white diamonds are not true (there are in fact real natural and commercial barriers to it). Finally, you'll hopefully have an appreciation for the hard work and endeavor that many scientists have put into turning the old dream of lab grown diamonds into reality on your finger, even if it still has many constraints as to what types, sizes and colors of lab-grown diamonds are available.
Simulated Emerald Earrings and manufactured (Cultured) Diamonds - Myths vs Reality, 2007 No URLThanks To : We have selected quality products for you here Lab Made Pendant 4 Ct Diamond Rings
No comments:
Post a Comment