What is hardness of cz and zircon?
Asked in Jewelry
What does the cz in cz jewerely stand for?
CZ stands for Cubic Zirconia in regards to jewelery. It is a synthetic (created in a lab) alternative to diamond. The main difference between Cubic Zirconia and actual Diamond is the weight, hardness, and the pricing. CZ weighs more than a diamond of the same size, but is a lot less hard. CZ is usually referred to as "fake" or "faux", as it is not the real thing; but CZ is a lot more affordable than diamond.
Asked in Chemistry
Does zirconium cut glass?
The metallic element Zirconium (Zr) has a Moh's hardness of 5.0, this is not hard enough to cut glass. The crystalline compound Zircon (zirconium silicate ZrSiO4) has a Moh's hardness of 7.5 7.5 is harder than Quartz and therefore Zircon will scratch glass. The crystalline compound Zirconium dioxide (ZrO2), sometimes known as zirconia (the one that looks like diamond) has a Moh's hardness of 8-8.5. This too will scratch glass.
How could you find a mineral not listed on Mohs Scale of Hardness?
Moh's Scale of Hardness # Talk # Gypsum # Calcite # Fluorite # Apatite # Orthocalse Feldspar # Quartz # Topaz # Corundum # Diamond Has only 10 minerals in it. There are literally 100s if minerals to be found in the rocks that are not used in the scale but that can have their hardness related to the scale. e.g. graphite, galena, beryl, zircon etc.
Asked in Jewelry
Is espo sterling valuable?
It's a designer of affordable jewelry. Espo, or ESPOSITO was the jeweler's name beginning in the 1950's. A solitaire clear stone isn't a diamond, but a zircon. Zircon is a natural gemstone that is very close to diamond in hardness. Has great clarity and reflects beautifully is cut correctly. It's not a fake.
Asked in The Difference Between
What is difference between cubic zirconia and zircon?
Cubic Zirconia is a synthetic man-made material, while Zircon is a natural substance dug from the earth. Also, real Zircon is more rare and expensive than cz (cubic zirconia), but it's best to take your pieces to a qualified jeweler, as 'site' appraisal of jewelry can be tricky for the consumer if you don't know how to tell the difference (and some appraisers can cheap you as well, one reason to learn about these 'gems' on your own if possible, even take a jewelry course or two.).
What does CZ diamond mean?
What does CZ stand for in terms of diamonds?
Cubic zirconia (CZ) is the cubic crystalline form of zirconium dioxide (ZrO2). The synthesized material is hard, optically flawless and usually colorless, but may be made in a variety of different colors. Hardness: cubic zirconia has a rating of approximately 8 on Mohs hardness scale vs. a rating of 10 for diamond. cubic zirconia gemstones may be cut differently from diamonds. The facet edges can be rounded or "smooth". Source: Wikipedia