Gems and Precious Stones

Perlite does not have a streak color because it is a volcanic glass that does not leave a streak on a streak plate.

Yes, a real ruby can be broken if subjected to sufficient force or pressure. Rubies are relatively hard gemstones, but they can still be fractured or shattered if struck forcefully or if they have pre-existing structural weaknesses.

When shopping for precious stones, it is important to keep in mind the specifications which are used to judge the quality of the stones. Diamonds and gemstones are evaluated by a universal standard that is known as the "Four C's." Cut, clarity, color, and carat weight are the most important technical features of any precious stone. A certified jewelry dealer should reveal all of this information to customers. Without specialized optical equipment, it is difficult for a person to judge a diamond or gemstone and use the Four C's standards. Additionally, a GIA certification implies that a precious stone is authentic and meets the criteria that is used to market such jewelry.

Moderately. And that depends on the quality of the stone. They are semi-precious stones- not as expensive as diamond, ruby, emerald, but not costume jewelry either.

No. Most gems are held together largely by ionic or highly polar covalent bonds, while diamond is a covalent network. Neither of these bond types are suitable for alloys. While it is possible to alloy metals with nonmetals, such as carbon and iron in steel, the nature of the bonding is different. In the case of steel, individual carbon atoms fit into the spaces between iron atoms.

Diamonds are available in a variety of cuts that exemplify their brilliance and clarity.Baguette-cut diamonds bring straight lines and beautiful shapes to all types of diamond jewelry. The baguette cut diamonds are rectangular and have step cuts similar to that of the emerald cut. This cut generally will have 24 facets and the parallel facets are arranged to look like a terrace.

The Unit To Measure Gems And Precious Stones Is Carat.

Time Considered as a Helix of Semi-Precious Stones was created in 1968.

a diamond with a cloudy ( milky ) apearance.

These would normally be used for manufacturing because they are not valued like clear diamonds.

Diamonds are not commonly found in Louisiana. The state is not known for diamond mining or production. Natural diamond deposits are typically found in specific geological conditions and Louisiana does not have the necessary environment for diamond formation.

There are "Russian diamonds" - is the company/website name and it offer diamond simulants, not real diamonds. And there are Russian diamonds which is produced in Russian labs which are 100% real diamonds. To ensure the diamond is real ask for independent gemology certificate: GIA, EGL, IGI.

Tiffany and Co keys are typically only sold directly through Tiffany and Co stores or their official website. They are not typically available for purchase at department stores.

Topaz of Ethiopia refers to a specific variety of topaz gemstones that are found in Ethiopia, known for their unique colors and qualities. Ethiopian topaz can come in a range of hues, including yellow, blue, and colorless, and is often prized for its clarity and brilliance. The discovery of this gemstone has contributed to Ethiopia's growing reputation as a source of high-quality gemstones on the global market.

There is no hallmark for Gemstones , only for the gold or silver content. A Gemologist has to certify Gemstones.

About 800 b.c.

This ring is just costume jewelry, so it can range from approximately $10-$25 in the United States. They can be found priced as low as $15 on eBay.

I like the pun...if that was your intention. Opal rough (rock before it's cut) tends to be on the softer side than the other precious gemstones (ruby, sapphire, emerald). It has a hardness between 5.5-6.5 on the mohs scale. So opals when constantly worn could become scratched and needs to be repolished time to time