Colour or not, there is something special about boulder opal, that Koroit pattern is always lovely to see. Thanks for sharing, some good tips, we’ll done

Thanks Roy. I made mine way too thick. Now I know, "less, is more". Much appreciated.

I would love to see the results of your different polishing methods all next to each other on this type of stone. What might be really cool is to get a large enough surface to do different methods in sections on the same stone. In any case, I ALWAYS appreciate all the content you put up for us to learn from. Thank you, yet again!

Thanks Roy, perfect timing, I’ve got a piece of boulder opal ready to final polish and I’m a bit more confident now.

Perfect. I've had some boulder with a lot of iron stone (90% ironstone, 10% opal 😆) that I just haven't really even touched yet, because I wasn't sure how to go about polishing. Thanks again Roy!

Hey roy, thought id mention ive had very good luck with car cut and polish compound for boulder oapl! 500, 800, 1200 2000 car polish then hand finished with leather glasses pouch and rouge compound, seems to help seal the gloss in (an option) if some one wants to try and not wait for polish powder car polish =) also works a charm on normal opal.

Great video. I remember you doing a similar video in the past. This is a very good refresher. Thank you.

Great tips. I learned a few new things. Thanks.

From your observation of first wetting the boulder opal to help prevent the aluminum oxide from falling into the crevices. Adding a surfactant to the water will help 'flatten' the water, reduce the surface tension. The water I think? should stay in the pores more readily while you polish. To take this further. Add a very small amount of borax and soap to distilled water. The borax and soap solution may help float the cerium oxide and possibly flush away particles, which may produce a faster cut and higher polish. I make a super-saturated borax solution for personal use, but crystals will form after 4 days. I would start with 2 tablespoons of borax to 1 gallon of boiling water with equal amounts of soap. Maybe use dishwasher soap as it's non foaming. Great video Tks!

❤thank you for this well needed video and info Roy..its exactly what i needed to help me with boulder i was busy with

On a surface like that I always seek a very slightly doming as it makes the Finnish more important than the flatness

Thanks, Roy. Am running into some issues on my big guy. Finding more blue, green and yellow, but, now finding these patterns like your specimen in this video. Where do I cut, eeek?!!!

Great explanation Roy!!👍😎🌶️

Lightly warm the stone immediately before putting the stone in warm warmer then into the fridge for 1/2 hour

great tutorial.

Thank you, this has cleared alot up for me!!!!✌🤠✌

Hey Roy, if you watch a movie called " the return of Captain invincible" staring Alan Arken , about half way into it shows an apartment with a GIANT hunk of carved boulder opal. It's spectacular and must now be worth a few hundred grand of it still exists. It's worth scanning for if the movie doesn't entertain you enough to watch it. It is mind blowing

good info mate

i bought a flat lap its a game changer

i just thought of mixing cerium oxide and aluminum oxide together for polish. could there be any benefits of this? i will try it for shure. thanks for all your videos. very helpful as a beginner. top informations you share! :-) greetings from Switzerland

Have you tried tumbling any with AO before ? I had a go some time back but used CO for the polish and they all just stayed dull haha not sure i want to go theough a month of pain again 😅

Saya tidak mengerti kenapa batunya tidak bagus setelah digosok....

Koroit, the boulder opal that eats diamonds.

Hi what is the burr, is it just a cloth one

Main issue: can't seem to find anyone selling alu-oxide to Sweden, or, we found one company but they wanted 70-80 dollars for shipping of a small bag. Any suggestions? :-) And yea, I'm gonna try avoid polishing the sandy areas in the future, its just eating up my nova tips.