Saturday, June 2, 2012
I prefer working with 18K yellow gold as it has a richer gold color than 14K and is what I consider a good medium material as it is 75% gold compared to 14k being only about 58%. 14K is stiff and difficult to work by hand thus it is usually a caster's material. My work is hand made and not cast thus I need a more malleable metal. The Thai goldsmiths complain that 18K is stiff to work with and they prefer 22K thus 18K seems to be the middle ground and it is accepted world wide while neither 14K or 22K is accepted world wide.
Thursday, May 31, 2012
I now have an online catalog for folks to use to select a style on their custom made jewelry order. Take a look : http://s710.photobucket.com/albums/ww104/leesgems/Catalog%20of%20Selections%20for%20Custom%20Jewelry/
Tuesday, April 3, 2012
When shopping for a Sapphire of fine quality in a market place there will be many factors to consider but this will only touch on a couple of the factors as complete information could fill a few books.
Usually a fine quality stone will have little or no inclusions visible even when you look with 10x loupe. The first concern when there are no inclusions visible is that it may be a synthetically made Sapphire rather than a Sapphire mined from the ground. Synthetic gems are usually valued much lower than naturals. That is why it is often comforting to find a tiny natural inclusion that we recognize or some color banding that has a 120 degree corner. This type of banding is only seen in a natural Sapphire so if we are sure that there is color banding with this type of corner then we know we are looking at a natural Sapphire, however, look at the picture above.
In this stone we can clearly see the color banding with the 120 degree corner. Many times this banding will be much lighter and harder to see but I selected this stone so that it can be seen in a photograph. Even though we now know we are looking at a natural Sapphire, we must check the girdle of the stone for a seam. This will require at least 10x magnification. On this particular stone there is a seam barely visible under 10x as this stone is an assembled stone, also known as a doublet. The crown is natural Sapphire and the pavilion is a synthetic Sapphire and they were glued together as rough then faceted so that the seam is hidden on the girdle. This type of stone is designed to fool the gem buyer. Often the crown has lighter banding than this as they want us to believe that we are holding a very fine quality natural Sapphire so we will pay them far too much for their assembled product. I would advise to make a close inspection of the girdle of every Sapphire before buying it, even from a trusted local jeweler as this product has made its way into many fine shops without being detected by the gem buyer of the store. Best regards, Lee
Thursday, March 22, 2012
Friday, March 2, 2012
Well, it has been a long time since I posted here, life has been very busy with travel, jewelry making and just enjoying the children as they grow.
I have been focused on improving the grade and complexity of my jewelry. Many varieties and colors of small accent stones really add a lot of flavor to my work. Bead setting, channel setting, prong setting and flush setting the small stones is enjoyable work and gives the large stone additional color contrast or a color companion. I now have over 150 designs that I am working from and each of those has variations as well so my selection is really starting to bloom.
I am immersed in creating new designs, more post to come! All the best, Lee
Saturday, April 2, 2011
Yep, now I know, do not go shopping in an area that was all shook up the night before.
Vendors just do not go to work the day after a catastrophe.
The few we did find told horrific stories. One friend had 17 people that he knew die that night, several while running inside their cement house before it fell on top of them. Very sad.
We live less than an hour from Burma where there was a quake of 6.7. That evening I was sitting in my office chit chatting with our teenage daughter. Both our eyes widened as we scanned the room full of objects shaking and we said in unison "EARTHQUAKE!" then jumped up and headed for the front door. I barked orders for everyone to "get outside, NOW!" With kids scrambling for the door in front of me, I grabbed up two little ones by the armpits and made my way onto the porch with them both screaming in terror of the unknown. The wooden stairs to reach the ground shook violently or else my knees wobbling added to it as we crowded down them to get away from the house. The sounds of objects falling onto the wooden floor of the house was encouraging me to move more swiftly. Normally the house has provided us with comfort and safety but in an earthquake it is only a danger. As we reached the ground we were shouting about the corn field that sits next to the house, our best destination, then the earth stopped shaking. We stopped running and sat down on some benches in the front yard and looked back to the house. It looked fine. We were fine too, just a couple of the kids crying. We decided to just stay outside for awhile and breathe. I opened the front gate and moved the family car outside and parked along the road far from the area that the house would land in were it to fall. We did sleep inside that night, all of us fully clothed and ready to run, but it was very common the next day to hear that many people had slept outside with the mosquitoes for fear of the structure coming down on top of them in their sleep. I did leave all the bedroom doors open and made sure the path to the front door was clear. At 6:30 AM a small tremor made me spring to my feet while still in dream state just in time to realize that it had stopped already.
It had not occurred to me that our planned day of shopping on the border would have been better planned to be a later day. It was a ghost town. No miners brought rough stones in for us to look at, not one. We sat at an empty rented desk apparently just to make conversation with the locals. About 90% of the shops and vendors areas were locked up. Ruby Lane had just one vendor. I did manage to find enough goods to pay for the trip but all in all it was a pathetic shopping excursion.
We are, however, humbled by our own good fortune. It is very easy to be thankful just to be alive and have your family safe in such a situation. Our wooden home suffered no damages but the temple just a kilometer away lost a large piece of cement. Several Thai friends commented about how the houses of times past would be better for these times as they were built from bamboo (very flexible compared to cement) and the roof was straw so it would not hurt even if it fell on you in your sleep.
May you all be well and safe, my friends, best regards, Lee
Tuesday, January 11, 2011
Perhaps I am old fashioned but I prefer a Star Ruby or Star Sapphire cabochon over any faceted gem I have ever seen. Old fashioned in the sense that faceted stones are a relatively new style of cutting compared to cabochons that have been the style for thousands of years. The cutting style, however, is not the key to my admiration as the true beauty of the star gem is indeed the phenomenon of light called asterism. A six ray star that glides all around the surface of the dome as one tilts it in the sun. Pure natural magic to my eye.
The more perfect is the star, the more mesmerizing is the effect. Several factors will determine the look.
The play of light is caused by the hexagonal shape of the crystal structure often made of silk-like Rutile inclusions found in corundum. The exception to Rutile silk is Hematite platelets seen in black sapphires from the Thailand/Cambodian border. If the stone is too clear the silk or the platelets will not be enough to make a star so we need the inclusions. When we are fortunate enough to have both Rutile silk and Hematite platelets we will have a double six ray that is naturally aligned to show a 12 ray star with alternating colors in the rays. The Rutile will often show white or light blue rays while the Hematite will often show yellow or even orange rays.
The star will be centered only when the gem cutter correctly orients the axis perfectly so that it is perpendicular to the face. Many stars are thus off center but this is of little concern as long as it is fairly close so one does not have to search hard to find it.
It is best when we can see all six rays. Often an inclusion will block the view of one ray or hair line fractures will distort the star to some extent. Many times the dome of the cab will be flatter than ideal and cause the star to become broader and less than sharp.
The exact dome combined with the necessary clarity and the axis oriented correctly will allow us to see a sharp star with the rays reaching all the way to bottom of the stone.
As in all colored gems, it is the color that dictates the price when all other factors are equal. The color highest in demand for a star is, without a doubt, red. Red corundum is better known as Ruby and a star Ruby of fine character is truly an exciting and rare gem that will command the highest price of all stars. The stronger the red, the better, however, often pink and purple will be secondary colors. Mogok Burma is the very top of origins that such red Star Ruby gems have been found.
The next most favorite color in the world for a star will certainly be blue. There is a great deal more blue than red star Corundum in the world and this we call Blue Star Sapphire. The finest blues come from two places, Sri Lanka and Mogok Burma. Sri Lanka is famous for its Ceylon blue while both locations have produced what is referred to as 'cornflower blue', the top blue in Corundum.
The most common colors found in natural star Sapphires are black and gray. It is far easier to find a fine quality stone in these two colors than any other. A few star gems are naturally purple, pink, green, yellow, orange, brown or white as well as a mix of shades and tones. Often the purples and pinks are also called Ruby like the red with Purple Ruby being called a masculine ruby and a Pink Ruby being referred to as a feminine Ruby. Usually these two colors are called Sapphires in America.
Today many star Ruby and Sapphire are heated to clear some excess inclusions which can sharpen the star. Borax flux is usually added to the recipe in order to heal some cracks. Too high of heat will eliminate the star and this practice is common when the dealer has a higher demand for faceted gems than he does for stars. Often a star needs no heat and is thus left completely untreated. On the other hand we have repaired stars that have been heated with leaded glass, a less desirable product, however still very beautiful in the short run. I wrote earlier in this blog about the leaded glass treatment done to stars, please refer to it for more tips and information of treatments.
A star can be lab created even in a natural stone. It is diffused into the surface of the polished cabochon and could be polished off in a re-cut. These diffused stars are usually easy to spot as they show in most any light and usually have wavy or crooked rays. These lab created stars are also seen in synthetic corundum, the most famous being called a Linde Star, a trademarked name. Production of these synthetics was stopped by the Union Carbide Company in the 70's when the Asians made so many synthetic sapphires with diffused stars available so cheaply that it was no longer worth it to make them with American labor. Today they are still produced in Asian countries as the demand for low cost Star Sapphire and Star Ruby is still strong. Medium grade Star Sapphires and Star Rubies are in constant demand as they are very affordable and have so much flashy character for the money.
Star Sapphires and Star Rubies of all grades have enjoyed a surge in demand as they are often more intriguing to look at than the more common gemstones. I could not begin to count the number of request I have had over the years for blue star Sapphires.
The demand for high grade natural star gems is even stronger these days than it was in the past as these rare gems have become even more rare as supplies have dwindled. My wife is a huge fan of Star Ruby thus I am always on the lookout for prized red star corundum. I acquired a stunning example recently, mounted in a gold ring, and was so impressed with it that I wanted confirmation from a laboratory that it was genuine and not diffused. I took it to AGIS laboratory in Bangkok, an organization that is famous for being reliable and is better priced than the most famous, GIA. Normally on a visit to a lab one only gets to talk with an office clerk that sits behind a security window, however, when I went in to pick up my report on this particular Star Ruby a gemologist came out of the back to shake my hand and talk to me. He was excited about the stone and proceeded to explain to me that three gemologist had studied it and they all concluded that this was a natural star with no evidence of treatment found. In his words, this was "the nice one". I decided to put this one away for awhile.
Stars will always hold a special place in my heart whether they are in gemstones or in the night sky. Fond memories of coming home from work late at night then laying on the mowed grass of my Ohio home with my young sons at my sides all gazing up at the bright star-filled black sky, dreaming together and being ever so thankful for natures wonders and the love of family. Somehow stars and their brilliance seem to hold this magical feeling that gives us hopes and visions of a bright and shining future. Wear yours in good health!