The Crown to Width (C/W) ratio gives you the size of the crown, from the girdle to the table. You measure the width (w) on the short side of an oval shape.
I'm always impressed by these Stones that are not valueted enough here in Brazil. That tipe of Aqua is always CUT with low quality cuts, by free hand. How many amazing rough was ruined for speedy gem cutting? But these lower gems dominate or market
Hello.. Tell me please, what kind of immersion liquid do u use... Because the most of them are very hazardous... So the pure warer is solution((( Maybe u have other ideas.. Thank u in advance!
I use REFRACTOL. The person who created Refractol passed away many years ago and never disclosed the receipt on how to make it to anyone. There are at least two refractol like liquids on the market. I have not seen any information on these two products to indicate they are very hazardous, so I can't say. Some cutters use wintergreen oil, cinnamon oil or some other substances, and some cutters use oil. I find that water is not as good as any of these alternatives, but it is better than nothing.
@@mikesackos2208 yes.. refractol is very hazardous.... U have to wash your hands after it very carefully and use the very effective ventilation... moreover it is restricted to touch the liquid by fingers.. only with equipment... Take care, Mike Thank u very much
@@evgenyk.4681 I appreciate your view and I know that some other gem cutters share your opinion. However, to date, I have never had anyone actually state the ingredient or ingredients contained in the mixture which they claim to actually be 'hazardous'. It's always just been the opinion of some cutter...total opinion. But the bottom line is, if you feel it is safest to just use water to help you identify if there are or are not internal issues in a piece of gem rough, great! Rough dealers normally don't have an issue with you dropping their rough into water to evaluate it...some have an issue if you coat their rough with anything else, even just oil...so if you want to use water...great! Do what works for you. .
@@timmsmiithgm557 Yes, the original Refractol is no longer available. The 'inventor' took the 'receipt' to the grave with him. But I have enough to last me forever, so I will continue to use it. There are some copy-cat products out there, I saw two being sold at the USFG "Franklin Frolic" last year...but again, YES, the original by "Bob-a-Lou" rocks is no longer available...that I know of.
That could be. No matter what the intent was, the original design provides a way to cut gemstones that are more shallow than 'normal'. I have no issues with the original design. Mr. Long and Mr. Steele created some amazing designs! However, I personally really like having a ''picture framed' table so for my personal preference, I tweeked the design.
I modified the 6th row on the crown. It was a 6 degree cut. I changed it to a 15 degree cut so that it was make more of a noticeable 'picture frame'. In the original design this is the final tier or row. I added a table to that. So Now i have a 'framed' table, which is an effect I personally like. Having a long angle at 6 degrees or a short angle at 15 degrees is not going to add much, if anything, to the total depth of the gemstone.
Adding the table & framing it like you did, really makes the thin cut really sparkle.
Thanks! I like that style of a table...a framed table.
well done Mike !!!
Thanks Paul!
Very sparkly, I hint it’s nice and would love to try it out
Thank you. If you do give it a try, let me know how it turns out.
Looks great, I really like your videos. Thanks.
Question : If you have oval shape stone which side you measure for crown. The long side or the short. Divided buy C/W ?
The Crown to Width (C/W) ratio gives you the size of the crown, from the girdle to the table. You measure the width (w) on the short side of an oval shape.
Thank you. You are most kind 👍🏻@@BOPIESDiamondsFineJewelry
Aquamarin is my favorite ston
I like cutting Aquamarine as well! Thanks!
I'm always impressed by these Stones that are not valueted enough here in Brazil. That tipe of Aqua is always CUT with low quality cuts, by free hand. How many amazing rough was ruined for speedy gem cutting? But these lower gems dominate or market
Thanks for that information. I have bought rough in Brazil before and I did notice some amazing prices.
Hello..
Tell me please, what kind of immersion liquid do u use...
Because the most of them are very hazardous...
So the pure warer is solution(((
Maybe u have other ideas..
Thank u in advance!
I use REFRACTOL. The person who created Refractol passed away many years ago and never disclosed the receipt on how to make it to anyone. There are at least two refractol like liquids on the market. I have not seen any information on these two products to indicate they are very hazardous, so I can't say. Some cutters use wintergreen oil, cinnamon oil or some other substances, and some cutters use oil. I find that water is not as good as any of these alternatives, but it is better than nothing.
@@mikesackos2208 yes.. refractol is very hazardous....
U have to wash your hands after it very carefully and use the very effective ventilation... moreover it is restricted to touch the liquid by fingers.. only with equipment...
Take care, Mike
Thank u very much
@@evgenyk.4681 I appreciate your view and I know that some other gem cutters share your opinion. However, to date, I have never had anyone actually state the ingredient or ingredients contained in the mixture which they claim to actually be 'hazardous'. It's always just been the opinion of some cutter...total opinion. But the bottom line is, if you feel it is safest to just use water to help you identify if there are or are not internal issues in a piece of gem rough, great! Rough dealers normally don't have an issue with you dropping their rough into water to evaluate it...some have an issue if you coat their rough with anything else, even just oil...so if you want to use water...great! Do what works for you. .
I use cinnamon oil - it's not too expensive, smells really nice, and is available. Refractol is famously great, but I hear is no longer available.
@@timmsmiithgm557 Yes, the original Refractol is no longer available. The 'inventor' took the 'receipt' to the grave with him. But I have enough to last me forever, so I will continue to use it. There are some copy-cat products out there, I saw two being sold at the USFG "Franklin Frolic" last year...but again, YES, the original by "Bob-a-Lou" rocks is no longer available...that I know of.
It seems to me that the intent of the original design was to avoid windowing in a table, which I think was introduced by the alteration.
That could be. No matter what the intent was, the original design provides a way to cut gemstones that are more shallow than 'normal'. I have no issues with the original design. Mr. Long and Mr. Steele created some amazing designs! However, I personally really like having a ''picture framed' table so for my personal preference, I tweeked the design.
Can you clarify why you chose to modify the angles on the third tier of the crown to be steeper?
I modified the 6th row on the crown. It was a 6 degree cut. I changed it to a 15 degree cut so that it was make more of a noticeable 'picture frame'. In the original design this is the final tier or row. I added a table to that. So Now i have a 'framed' table, which is an effect I personally like. Having a long angle at 6 degrees or a short angle at 15 degrees is not going to add much, if anything, to the total depth of the gemstone.