Maya stelae (singular stela) are monuments that were fashioned by the Maya civilization of ancient Mesoamerica. They consist of tall, sculpted stone shafts and are often associated with low circular stones referred to as altars, although their actual function is uncertain.
This part of the world is famed as the source for an astonishing variety of rare and enchanting precious stones: agate and turquoise ; jasper and obsidian ; amber from the Chiapas caves and the legendary Mexican fire opal . Many of these stones are unusual and some unique to deposits in the region.
The twelve sacred gemstones of Revelations are Jasper, Sapphire, Chalcedony, Emerald, Sardonyx , Sardius, Chrysolite , Beryl , Topaz, Chrysoprasus, Jacinth , and Amethyst . Many also believe that there is a clear association between the twelve apostles and the twelve gems from the walls of Jerusalem.
Since it is just a strong and durable stone , there should be no scratches. If there are nicks or bubbles on the stone , then it is most likely a fake gem. Another way you can tell if a sapphire is real or fake is to look for imperfections. This is not to be confused with scratches.
Obsidian , igneous rock occurring as a natural glass formed by the rapid cooling of viscous lava from volcanoes. Obsidian is extremely rich in silica (about 65 to 80 percent), is low in water, and has a chemical composition similar to rhyolite.
The Mexican Fire Opal is named for its brilliant red to orange body color which is partly due to iron oxide. Mined in Mexico , this opal is lighter weight than other opal . These Mexican Fire Opals tend to have one body color and do not usually contain the flashes of light and color typical of other opals .
The four most sought-after precious gemstones are diamonds , sapphires , emeralds , and rubies .
Twelve Stones ( twelve מצבות (matzevot) or standing stones ) was a common form of marking a spectacular religious event in the days of Kingdom of Judah before the time of King Josiah (Deuteronomy 27:1–8). Hence, use of a Twelve – Stone monument became a form of marking a spectacular event.
Bezoar stones come from indigestible material that accumulates in the digestive tract of ruminants. Bezoars were worn in rings or placed in goblets to protect against poison . This item, often made of precious metals, had suspended from it ten or more stones with a capacity to detect or neutralize poison .
The largest Russian gems weigh about 30 carats. However, the vast majority of alexandrites weigh under one carat. Stones over five carats are very rare , especially with good color change.
Alexandrite is one of the varieties of Chrysoberyl, a mineral, whereas amethyst is a naturally occurring gemstone. Alexandrite is found in red and green varieties though it has the ability to turn purple in incandescent light. Alexandrite is harder than amethyst .