Live data from Hacker News

How diamonds are made

diamond.jaydip.me

31–40 of 67 posts

Re: How diamonds are made

#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://en.wikipedia.org/wiki/1994_plague_in_India

[2] https://en.wikipedia.org/wiki/Surat_Diamond_Bourse

Re: How diamonds are made

#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 can cost as little as a few dollars per carat. This makes it far cheaper than mining natural diamonds for the same applications.

Re: How diamonds are made

#34

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]…

true, I am the author of article. Surat's SMC does very good job keeping it clean.

Re: How diamonds are made

#35
post #18

I wish articles/domains like this one, which are accessible, playful, informative, short, and with images would be easy to identify in HN. That would be something worthwhile to share with children aged 8-12 who love learning new things.

Playful yes, but it is anything but accessible.

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 :)

Re: How diamonds are made

#36
post #9

Earlier quoted context omitted.

I'm often reminded of this classic tweet: > it's actually crazy we figured out how to grow real diamonds that are cheaper and better quality than the real thing and so many people are still like, no thanks the suffering is what makes it special. https://x.com/missmayn/status/1612892354624786444

It’s kind of surprising that diamonds still have appeal as jewelry at all given the rise of lab-grown. I always assumed that people liked them because they were rare and expensive.

People liked them because they’re colorless, sparkly, and hard.

Re: How diamonds are made

#37
post #9

Well, that goes for some diamonds. There's another kind that are made by man. In recent years -- over the past four or five years -- there has been an explosion in synthetic diamond production, largely driven by factories in China and India. There are a lot of those factories (spurred by the relatively easy availability of the necessary production-line equipment) and they're all in cutthroat competition with each oth…

I'm often reminded of this classic tweet: > it's actually crazy we figured out how to grow real diamonds that are cheaper and better quality than the real thing and so many people are still like, no thanks the suffering is what makes it special. https://x.com/missmayn/status/1612892354624786444

That’s a silly way to look at it. Surely people can realize that something made through natural processes has more of an appeal than something made in a factory?

That said, most of the gems I’ve purchased in my life have been lab grown.

Re: How diamonds are made

#38
post #20

Well, that goes for some diamonds. There's another kind that are made by man. In recent years -- over the past four or five years -- there has been an explosion in synthetic diamond production, largely driven by factories in China and India. There are a lot of those factories (spurred by the relatively easy availability of the necessary production-line equipment) and they're all in cutthroat competition with each oth…

Could you distinguish between them if you weren't told?

DeBeers has been working on systems to do that.

Re: How diamonds are made

#39
post #20

Well, that goes for some diamonds. There's another kind that are made by man. In recent years -- over the past four or five years -- there has been an explosion in synthetic diamond production, largely driven by factories in China and India. There are a lot of those factories (spurred by the relatively easy availability of the necessary production-line equipment) and they're all in cutthroat competition with each oth…

Could you distinguish between them if you weren't told?

There are some applications, such as IR optics, where natural diamonds aren't pure enough.

Re: How diamonds are made

#40

> 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.
Post reply on HN