The Green Gem's Lessons

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Gemology for Schmucks

Gemology for Schmucks

Жыл бұрын

Green is great, but synthetic corundum is bad. How can we cope with the evils of synthetic corundum? In this video i'll share how I handle it and tricks to help you if you have the bravery to confront this most ancient of synthetic evils.
Interested in learning to cut gems, check out Justin's online faceting apprenticeship: www.facetingapprentice.com
Explore more or contact me directly at gemshepherd.com

Пікірлер: 22
@trevorallen2274
@trevorallen2274 Жыл бұрын
Nice one, Peter.
@GemologyforSchmucks
@GemologyforSchmucks Жыл бұрын
Thanks Trevor
@thoralfgraetz857
@thoralfgraetz857 Жыл бұрын
Love you`re videos
@GemologyforSchmucks
@GemologyforSchmucks Жыл бұрын
Thanks Thoralf~
@rogerhargreaves2272
@rogerhargreaves2272 Жыл бұрын
For every problem there is always a solution; you solved it. Don’t care what anyone else says. Nice one Peter, thanks for sharing. Rog. 😀🏴󠁧󠁢󠁷󠁬󠁳󠁿
@GemologyforSchmucks
@GemologyforSchmucks Жыл бұрын
Thanks very much Rog ~ Knowledge is the fine edge of the knife dashing forward. May we run faster than the knife, and be bold enough to heal and continue after the knife catches us.
@rogerhargreaves2272
@rogerhargreaves2272 Жыл бұрын
@@GemologyforSchmucks Beautifully summed up my friend. 👍
@timmsmiithgm557
@timmsmiithgm557 Жыл бұрын
Thank you SOOO much for the tip on polishing SinC. My theory is that going from 600 to prepolish (or even straight to polish) that the top of the "ridges" created from the courser grit, are breaking off and creating self-contaminating chunks on the lap. Sometimes those chunks are fairly large, so I get BIG 100 - 300 grit-sized scratches, and many times they're smallish and I get 600 grit-sized. I'm going to eventually test this theory by including a 1200 or 1500 grit step between the 600 and prepolish. I wonder if this is a problem for other mineral types as well.
@GemologyforSchmucks
@GemologyforSchmucks Жыл бұрын
I'm likely no wiser than thee, but i'll say that my largest successes in that situation are taking polishing compound off the lap with paper towel spritz'd with isopropyl/ethanol alcohol (average pharmacy stuff) The real key for different gem types is in finding the right traction for the right crystal, i'd say (in my ignorance).
@lifeaddict
@lifeaddict Жыл бұрын
Hi, how are you, I’ve been binge watching your videos and now I’m hooked 👀😂, I’ve even decided to buy a cutting table 🤣😅. Do u have a video about the actual machine, turn table ?
@cocopufer5667
@cocopufer5667 Жыл бұрын
You used the letter f more times than my high school english teacher on this one! muhahahahah
@cocopufer5667
@cocopufer5667 Жыл бұрын
OH now I remember what I was gonna say, although I am not currently looking into cutting, knowing about these nuances in cutting is VERY insightful and helpful into my gemstone purchasing needs. This is really helping me understand more behind the real cost and ALSO potential FIXES for stones that I may otherwise pass on!! So very helpful. love this series.
@GemologyforSchmucks
@GemologyforSchmucks Жыл бұрын
I'm a fan of the letter f. It has a delightful shape. XD I'm glad that i've shared something useful to you~
@MrQuadragon
@MrQuadragon Жыл бұрын
The pits you're seeing on the surface are almost certainly "orange peel." If these were as a result of bubbles you would not be able to polish them out. Every gem cutter learns their own "tricks" to working out the kinks. Allow me to share mine. I've found that a very light charge of 8000 grit diamond on a copper lap seems to produce the best prepolish I could ask for and does so very quickly even for corundum. It's important to also note that the uniformity of particle size matters here. You need high quality finely sorted diamond powder. Not all powder is created equally! The trick is to actually use very little oil (and very little diamond) by sweeping the surface of the lap with a bit of paper towel to mostly dry the surface of oil before you apply the powder. Then rub the diamond in with your fingertip and spread evenly. The diamond will then stick more firmly to a light coating of oil rather than sliding around on the surface in a thick slurry. If the particles slide around, they will clump up. This can and does create disturbing "cat hair" scratches on the surface of your facet. It's amazing how little diamond you actually need on your lap. This was my lapidary epiphany moment if you will. I've also found a 1200 grit lap sets the stone up quite well to transition into a prepolish. Stay away from any grit sizes finer than 1200 and more coarse than 4000. A 50k or 60k charge on a BA5T lap for final is also amazingly fast, even for large stones with large facets. I feel like the main time suck with any large stone is due to the sheer surface area of each facet especially the table. Keep finding those lap/medium combos that increase your speed, nobody likes to spend several minutes polishing a single facet, and your wrist will thank you later.
@GemologyforSchmucks
@GemologyforSchmucks Жыл бұрын
Thanks for all of your deeply experienced tips. I definitely have a lot more experimenting to do, and using tips such as these you've shared will undoubtedly speed up my learning curve. Cheers~
@sergioortega5869
@sergioortega5869 Жыл бұрын
Hi, good morning and Happy New Year. I see that you have a facetting machine, you think it's better than the new ones that have much more. I think that the one you have is easier to use
@GemologyforSchmucks
@GemologyforSchmucks Жыл бұрын
Happy New Year to you aswell~ I like the platform/ handpiece faceting machines yes. That may be because its what I was trained on, and im eager to have a go with a mast machine soon. All things equal... i'll say that the Sterling (Sri Lanka) handpiece machine I am using is about 1/3 the price of some of the other big names, and i'm not convinced that my work is inferior to anyone on a masts work. Where there is a quality difference comes down to experience in my opinion.
@dr.e.r.blomgren
@dr.e.r.blomgren Жыл бұрын
Would love if you showed closeups, nice and slow, all around, of your finished gems. To see them many feet away in a display box doesn’t do it. Thanks, (a GG).
@williamharberts5514
@williamharberts5514 Жыл бұрын
If working with a stone that isn't deep enough to avoid having a window, is that flaw in the finished stone less of a problem/less noticeable in colored stones than in a colorless stone? I didn't mind the look of the window with the rind in the prior video, but wonder if I would just have a dark or dead spot in a colorless crystal.
@beartutor3377
@beartutor3377 10 ай бұрын
Synthetics: these are gems that have been grown in a laboratory, although many people refer to them as “fake” this is not exactly correct due to the fact they are the same material.
@GemologyforSchmucks
@GemologyforSchmucks 10 ай бұрын
Right - unpacking the word "fake" is a big part of what we try to do here on Gemology for Schmucks. "Fake" is a lot like the word "cheap" - it doesn't communicate the situation clearly. Many people use the word "fake" to mean "not what I thought it was" ~ but as you pointed out, a synthetic gem has all the same properties as a natural stone, but is grown or manufactured in a lab/factory.
@beartutor3377
@beartutor3377 10 ай бұрын
@@GemologyforSchmucks also totally random comment: I recently faceted a 37.7 carat Morganite with a fancy barion emerald cut. Very luscious, Id love to see it in your videos sometime lol
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