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How diamonds are made

diamond.jaydip.me

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Re: How diamonds are made

#61

Post by blueone »

asdfasvea wrote: post #55
blueone wrote: post #47

Earlier quoted context omitted.

> Most of diamond purchases are for engagement rings. Nobody wants to appear cheap. The expense and rarity is the point. I relate to this. I wasn’t born rich and grew up poor. My parents started a business when I was in my teens, so I worked two jobs, and technically still do because I help them out. My parents instilled a work ethic in me that’s helped me get to where I am in life. When it came time for me to buy an…

>>>Spending 18x to 20x more on something that looks exactly the same and serves the same purpose just wasn’t logical to me. That's up there with people who brag about only smoking when they drink and vegetarians for moral reasons who eat fish. You framed a feelings based, adherence to tradition, no basis of actual functionality as a rational, logical decision, just because there was a worse decision to be made.

[flagged]

Re: How diamonds are made

#63

Post by Kirby64 »

ridgeguy wrote: post #40
cassepipe wrote: post #33

> From here, there are two rounds of sorting: gem quality and industrial grade. Most of mined diamonds never become jewellery. They go to cutting tools, drill bits, and grinding equipment. For industrial use synthetic diamond is actually quite cheap now. The vast majority of industrial diamonds used today are synthetic and they've been affordable since the 1950s (?). Industrial-grade synthetic diamond grit or powder…

Diamond grit for polishing and grinding is now a cheap commodity. In 10,000 ct. lots, I pay from 5¢/ct. to 30¢/ct. depending on specific grit properties. I haven't searched for it, but diamond sandpaper should be a thing at these prices.

Diamond abrasives are definitely a thing. But for sandpaper, you rarely need anything more than the typical ceramic or silicon carbide abrasives. They pretty much are relegated specialized tooling for polishing, cutting, or abrading ceramics, concrete, tile, etc.

Re: How diamonds are made

#64

Post by jdsane »

cwillu wrote: post #56
jdsane wrote: post #35

Earlier quoted context omitted.

hello, I'm the author of article. I've tried my best to use accessibility patterns. If there's anything that i can improve lmk :)

I affirm what the other comment says, but I additionally want to note that whatever you're doing to defeat reader-mode should be avoided: it's there for a reason! Additional notable bug: scrolling around simply breaks the transitions, leaving me scrolling around vast completely blank vertical sections until I get back to the very bottom, and then the very top.

It should have a reader mode now. for scrolling i think js didn't load for that instance leaving with blank gaps. If it still persists lmk

Re: How diamonds are made

#65

Post by ridgeguy »

Terr_ wrote: post #57
ridgeguy wrote: post #40

Earlier quoted context omitted.

Diamond grit for polishing and grinding is now a cheap commodity. In 10,000 ct. lots, I pay from 5¢/ct. to 30¢/ct. depending on specific grit properties. I haven't searched for it, but diamond sandpaper should be a thing at these prices.

> diamond sandpaper should be a thing I wonder, do diamond abrasives create any unusual safety/environmental issues when used around the house? I can't imagine it being any more chemically-objectionable than tungsten carbide, but the structure and behavior of dusts could be different, etc. The answer is probably that other things are still cheaper.

Unknown at present (nobody sells diamond sandpaper yet that I know of), but not likely. Diamond is as bioinert as gold, fluorocarbons, and similar materials in not provoking inflammatory responses when implanted in tissue. Your point about unexpected behavior of dust is a good one. AFAIK, the worst dust hazards (aside from outright chemical or radiological toxicity) are from spiky, acicular particles like asbestos. Diamond dust is either well-formed small crystals or blocky fragments, depending on how it's made. It doesn't exist in needle-like forms that trigger pathological responses from otherwise nontoxic materials.

Re: How diamonds are made

#66

Post by jayanmn »

mlmonkey wrote: post #32

Since this is HN, as an aside, Surat (the city mentioned in the article where the gems are polished) holds the dubious record of being the last major city in the world to have had an epidemic of the bubonic plague[1] back in 1994. They took the opportunity to really clean up the place after that. Today, Surat is known for another distinction: the world's largest office building[2] (even larger than the Pentagon). [1]…

https://np.reddit.com/r/UrbanHell/s/lkNfafhwoa

The project is failure so far.

Re: How diamonds are made

#67

Post by mlmonkey »

jayanmn wrote: post #66
mlmonkey wrote: post #32

Since this is HN, as an aside, Surat (the city mentioned in the article where the gems are polished) holds the dubious record of being the last major city in the world to have had an epidemic of the bubonic plague[1] back in 1994. They took the opportunity to really clean up the place after that. Today, Surat is known for another distinction: the world's largest office building[2] (even larger than the Pentagon). [1]…

https://np.reddit.com/r/UrbanHell/s/lkNfafhwoa The project is failure so far.

That is irrelevant to the discussion. It is the largest office building in the world currently, regardless of whether it's fully occupied or not.
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