Tangentially related: Does anyone in the HN community have a recommendation for a reputable place for obtaining a lab-grown diamond for an engagement ring?
If you’re in San Francisco stop in at Derco. They’re underneath the Airbnb building.
Synthetic diamonds are now purer, more beautiful, and cheaper than mined
361–370 of 511 posts
Re: Synthetic diamonds are now purer, more beautiful, and cheaper than mined
#362Earlier quoted context omitted.
A diamond the size of a moon? Does that mean it's a single molecule of pure carbon the size of the moon? I wonder what effects gravity has at that scale
The density of diamond is about 3.5 g/cm^3. The Earth's moon has a density of around 3.3 g/cm^3, so if you replaced it with a diamond of about the same size, it actually wouldn't be all that different in terms of gravity. Solar eclipses would be pretty wild though.
Was more thinking about whether there are any interesting gravitational effects on the internal chemistry of a giant crystal. Say it is one single crystal, how would its centre differ from the surface?
Re: Synthetic diamonds are now purer, more beautiful, and cheaper than mined
#363Earlier quoted context omitted.
The density of diamond is about 3.5 g/cm^3. The Earth's moon has a density of around 3.3 g/cm^3, so if you replaced it with a diamond of about the same size, it actually wouldn't be all that different in terms of gravity. Solar eclipses would be pretty wild though.
Was more thinking about whether there are any interesting gravitational effects on the internal chemistry of a giant crystal. Say it is one single crystal, how would its centre differ from the surface?
Earth, Moon, or Big Fine Diamond, the gravity at the surface is 1 unit (for whatever normalised radius, density to get a 1 works) while the gravity at the centre is 0.
Re: Synthetic diamonds are now purer, more beautiful, and cheaper than mined
#364Earlier quoted context omitted.
Maybe we can have diamond-based scratch protection on smartphones?
Gorilla glass is already some percentage of "Prince Rupert's Drop" in strength. This is not sufficient? https://en.m.wikipedia.org/wiki/Prince_Rupert%27s_drop
gorilla glass with olephobic layer would be really helpful unless am missing some product that has already implemented this.
Re: Synthetic diamonds are now purer, more beautiful, and cheaper than mined
#365Earlier quoted context omitted.
Maybe we can have diamond-based scratch protection on smartphones?
Gorilla glass is already some percentage of "Prince Rupert's Drop" in strength. This is not sufficient? https://en.m.wikipedia.org/wiki/Prince_Rupert%27s_drop
Gorilla glass is easily scratched by sand, whereas sapphire or diamond stays flawless for decades.
Re: Synthetic diamonds are now purer, more beautiful, and cheaper than mined
#366Mostly irrelevant when it comes to the value, sadly. Especially for engagements.
This seems to be an American phenomenon. Americans--women in demanding it, and men in acquiescing to it--are keeping this commercially confected "tradition" alive through a vanity bred and reinforced by corporate greed and consumerism. It's not that a diamond ring is bad per se. It's the artificial and frankly socially destructive stipulations around them. It's almost as if the marriage and future spouse were an afte…
It's not an American phenomenon.
Re: Synthetic diamonds are now purer, more beautiful, and cheaper than mined
#367Earlier quoted context omitted.
I am actually.surprised you arent getting any responses With the current focus on PFOS and just amount of garbage materiel used to prepare our foods, I think some innovation is just around the corner.
> some innovation is just around the corner It's already here! Stainless steel for pots, carbon steel for pans. Once I got my first carbon steel pan (not cast iron) I knew it was game over for the teflon pans in my house. I'm now gradually replacing the teflon pans with carbon steel, and then I'll never have to replace another pan in my lifetime. The upcoming PFAS ban in Europe will probably accelerate this transitio…
I replaced my téflon pans with carbon steel. I find the transition and learning curve to be much more difficult than téflon.
Cooking an egg is a big no-no, I need to think about when to squeeze a lemon or when to put my tomato sauce otherwise I might damage the seasoning. Nothing blocking but definitely a lot of things I don't want to think about.
Re: Synthetic diamonds are now purer, more beautiful, and cheaper than mined
#368Odd that an article about aesthetics does not include one photo/picture of an actual, supposedly more beautiful, synthetic diamond.
Re: Synthetic diamonds are now purer, more beautiful, and cheaper than mined
#369Tangentially related: Does anyone in the HN community have a recommendation for a reputable place for obtaining a lab-grown diamond for an engagement ring?
Ritani or Loose Grown Diamonds.
Re: Synthetic diamonds are now purer, more beautiful, and cheaper than mined
#370Earlier quoted context omitted.
I believe Apple tried to get sapphire for phones screens at some point, but their supplier folded.
They did however manage to get Sapphire on the watch display (at least on the stainless steel LTE edition of the apple watch series 4 and 8, which I'm aware of). The difference between my watch (which was 4 years old at the time) and a colleagues almost brand new apple watch (without the sapphire) was really telling, is his was lightly scratched on the edges despite him being quite careful, and I was exceedingly reck…
I have a Series 5 with the Saphire glass but my clumsy ass dropped it in the kitchen onto a stone floor. The edge of the glass shattered and while I still use it to this day, it's an ugly reminder of my clumsiness. The repair offer from Apple was to get a new one with a very slight discount.
Long story short, it is more scratch resistant but also more prone to break. So be careful.