However, while moissanite stones do create sparkle, some think it is actually too much for everyday wear, especially when compared to natural diamonds. (Remember the disco ball reference?) Also, moissanite and other lab-created gems might be more environmentally friendly than some diamonds, ...
Apochromatic refractors use either multiple-lens designs or lenses made of other types of glass (such as fluorite) to prevent chromatic aberration. Apochromatic refractors are much more expensive than achromatic refractors. Refractors have good resolution, high enough to see details in planets and...
Apochromatic refractors use either multiple-lens designs or lenses made of other types of glass (such as fluorite) to prevent chromatic aberration. Apochromatic refractors are much more expensive than achromatic refractors. Refractors have good resolution, high enough to see details in planets and...
General Geology: Articles about geysers, maars, deltas, rifts, salt domes, water, and much more! Geology Store: Hammers, field bags, hand lenses, maps, books, hardness picks, gold pans. Earth Science Records: Highest mountain, deepest lake, biggest tsunami and more. Diamonds: Learn about th...
If you know much aboutdiamonds, you know that diamonds are graded according to what is commonly known as the "Four Cs." The Four Cs consist of: Cut, which affects a diamond's brilliance, as brilliance relies on light optics and the ideal angles to produce the maximum effect. A deeply ...
Don't want to spend much on a scope that you're casually using around the house or ranch? A generic, cheap spotting scope is sometimes the best option when your budget is tight but you can't afford to go without the optic. The Huicocy spotting scope is just that....
left is one but right is two. you should delete one of right. 0 Likes Reply GaryHeathcote Fluorite | Level 6 Re: How do I correct an "Invalid argument to sqrt" problem? Posted 01-02-2025 06:07 AM (1286 views) | In reply to Ksharp Thank you. In fact, I...
The process of calculating these SMDs is much more involved than doing it for variables with only two levels. 0 Likes Reply amandiyliwo Fluorite | Level 6 Re: How to calculate standard difference of 4-level predictor variables with aggregate data Posted Thursday (244 views)...
Much of the ore from which gold is mined in modern times is not the “nugget-laden” ore one imagines from the old days of the gold rush, but is low grade ore. A ton of low-grade gold ore may only yield on average 6.5 grams of gold – however the high value of the gold still...
Selenite is a soft stone mineral and dissolves in water within minutes, so you will certainly not want to use the Pure Water Cleanse on this precious crystal. If your Selenite gets dirty, or you would like to clean it physically, a quick rinse will not hurt it too much, though you will...