Post by Tonyterner on Sept 5, 2007 14:35:16 GMT -5
I went to the local rock shop the other day and noticed they got in some labradorite. Being a sucker for anything green and shiny I went through the bin and found this piece which had a nice window of color.
Top surface is the colorful side in this pic
I wanted to make some slices on the saw so I cut parallel to the window and voila, no color. Or should I say just a touch of color at one corner. Decided I had already screwed it up so I'd try one more cut in the same plane. No color at all this time.
Based on this did I cut it wrong or does some of this material just not have color? Is it possible that the plane with the color warps through the piece (rock appears to be "layered")? If I did screw up the cut angle will it still turn out fairly well if I tumble it? TIA
I have some labradorite also and am finding it challenging to cut. I want to make necklace pendants out of it and have had to get an assistant to hold the stone up like it will be when worn as a necklace to determine the correct angle to cut, I hope I got it right. I hope that with a very high dome it will have a good flash. good luck on your cutting I think I will need it too
God put his best work in ROCKS. Etsy store, arendsagates
Post by firewalker45 on Sept 5, 2007 18:43:26 GMT -5
I can not speak from experience. I have only bought Labradorite in small pieces or slabs. Costs more but know what I am getting. From what I have read, you cut it right. Like some other rock it is like shooting craps. No way of knowing until you cut it. Daniel
Tony...I've, of course, have never cut ANYTHING! But I did notice a bucket at a rockshop that had Lab in it. Sitting on the very top was a hunk of yuck. It sat in a box that someone had written on...How Not To Cut Labradorite.
I took that to mean...cut it right or ya get crrrrrraaaapppp! Man...that stuffs not cheap you poor man!
liz opportunity is for the taking. Look inside yourself, you'll see. Then go clean up your own backyard...leave my yard to me. rossington collins band.
God of Multiple Parallel Universes Full of Rocks and Apprentice to THE ONE.
You're in luck, I'm am expert on labradorite. A couple of years ago I was at Richardson's Rock Ranch in Oregon. It was too hot to dig thundereggs so I shopped at the rock shop. They had a huge pile of Labradorite that practically glowed when watered down. It had spots of color on all sides so I slabbed it from various directions and ended up with spots of color (if I turned the slabs just right in the direct sunlight). I was so disappointed I sold the whole pan of slabs to someone for practically nothing. My expert advice? Buy a really nice slab already cut so you can see what you are getting. I wondered at the time if the thickness of the rock made it look better than when slabbed.
Sounds like you cut it correctly- but Lab is a tricky little animal- I have some of the massive form (used in countertops and such) and it is a bugger to get just right- As for tumbling the stuff- well being a feldspar it does have a good hardness- but being a fedspar it also will cleave (break) on a plane (basically break in a straight line) so it has to be tumbled alone- with lots of pellets- and lots of luck!!!!! Just work carefully and pay close attention to it and keep your fingers (and toes if you think it will help) crossed!
I can't tell if thats some Gneiss Schist, or that Schist is Gneiss. All I know is don't take it for Granite
God of Multiple Parallel Universes Full of Rocks and Apprentice to THE ONE.
Need to build a basement shop to really start rockin' again
Thanks all for the advise. The labradorite was $10 a pound, which is way more than I have ever spent on a rock before. I at least have the top slab that has a lot of color so its not a complete loss. My wife has already claimed a cab for herself eventhough I haven't gotten anywhere near cabbing it yet. I'll try the rest in the tumbler and see what gives.
Howdy.....I am by no means expert when it comes to labradorite but when I slab I try to keep the saw in the darker material so far I come out all right....Bob Rough face
Exactly! I've cut and cabbed quite a bit of Lab and I have also learned that cutting in the darker areas helps greatly. It's like some of the color (the good blues, purples and greens) resides on or close to the surface of the dark stuff.
I have also found that the color in stone bought at some rock shops and shows are not always the greatest. Their color looks great but is too close to the surface, so it goes away when cut, cabbed or polished.
I try to find pieces with lots of colorful "heels", elbows etc.. sticking out. I cut those off and make many of my cabs from them.
Saw blade also matters, I use a .012 gem blade to cut the lab, it is less abrasive. The coarser blades seem to cause surface fractures, pitting and such. That makes removal of more material necessary to get a good polish, which can result in loss of color.
Also, I use water and very little Lube Cool, for cutting Labradorite. Oils and coolants can soak into the stone and give the appearance of color loss.
I guess I went over my two cents worth, hope that helps.
Post by Tonyterner on Sept 10, 2007 14:54:09 GMT -5
Thanks all. Tom, after reading the link you provided I believe my piece and crystals going everywhich way in most of the rock. I got the first face OK so I should be about 3 or 4 cabs total. Not too bad.
bhiatt: yeah they were trying to keep from that happening. Not one shot was fired by police or the national guard last night. Tonight may be different. The news was reporting seeing lots of guns in the crowd. I guess they think even more rioting if the cops start
Nov 25, 2014 17:46:08 GMT -5
bhiatt: shooting back. There were hundreds of gun fire shots last night in Ferguson. 21 fires.
Nov 25, 2014 17:47:07 GMT -5
bhiatt: hundreds of nation guard for tonight. Them ghetto boys creep around in the shadows. Its hard for them to catch them. They throw them fire bomb bottles and run of and the building goes up in flame quick.
Nov 25, 2014 17:49:42 GMT -5
bhiatt: 2200 national guard, 700 police officers. Ew Raw! I shure hope they shut them pant sangers down tonight.
Nov 25, 2014 19:13:49 GMT -5
mr.mohs: pant sangers
Nov 25, 2014 22:44:13 GMT -5
bhiatt: dang looks like New York has bigger protest going on than st Louis.
Nov 25, 2014 23:20:05 GMT -5
Fossilman: A bunch of fools!
Nov 26, 2014 0:02:30 GMT -5
wampidy: All for a silly little thing like shooting an unarmed man with his hands up six times. Police attacking news camera men like they are wild dogs. There is a large group of veterans and active duty military personnel asking the National guard to stand down.
Nov 26, 2014 9:22:50 GMT -5
wampidy: About a hundred constitutional rights have been violated and this could be a huge turning point in becoming a police state or not. We could loose a lot of rights here. I am not agreeing with the looting and fires but the police have been very bad there.
Nov 26, 2014 9:26:35 GMT -5
Fossilman: I'm talking of the looting,fires and etc........Just like the 60's and 70's again....
Nov 26, 2014 10:39:20 GMT -5
bhiatt: Here in St Louis the police or national guard have not got aggressive. That's why the trouble makers had their way. Last night they had the numbers and just swarmed the streets telling people to basically leave. This was at 11 at night not during the day
Nov 26, 2014 14:46:43 GMT -5
bhiatt: when the peaceful protestors come out. I think the police and national guard now have them basically under control. They still might be out for the rest of the week, I wouldn't doubt that. The po po and nat. guard did not want to start a big shoot out,
Nov 26, 2014 14:49:57 GMT -5
bhiatt: I probably wouldn't even be watching the crap if it wasn't so close to me.
Nov 26, 2014 14:50:44 GMT -5