Ariberna
We are in the Grand Mosque of Abu Dabhi.
The price for enter is free for some places, but if you go with guide or contrated travel, the cost is something. The acces is in control entrance and later you walk in a tunel and enter at the entrance. Then women on right and men on left for religion, but the coordinates are in the tourist route (both sex pass here). The religious acts are on other rooms not in the tourist walk.
The schedule of the place is from 9 to 23 hours. You must do a code of clothes: women covered all and the hair too and men with throuser with knees cover and arms covered too.
"SEMI PRECIOUS STONES
Apart from the big 4: Diamond, Sapphire, Ruby and Emerald, which are the minerals known as precious stones, there are approximately 130 other mineral species classified as semi-precious stones, we will tell you about the most important ones. What Is The Difference Between Precious Stones And Semi-Precious Stones?
In the first place, it is considered that the rarity and scarcity of a stone are determining factors in classifying it as a precious stone. Amethyst came to be considered a precious stone because it was rare, but when the mines were discovered in Brazil and it became abundant, it was no longer so.
On the other hand, the highest degrees of hardness are found in precious stones, with diamond being the mineral with the highest hardness on the Mohs scale, followed by corundum (ruby and sapphire) and emerald. A high degree of hardness is synonymous with durability.
Finally, semi-precious stones have a very different value between them and it is easier to get pure large semi-precious stones than precious stones of such characteristics."
https://joyeriainter.com/blog/piedras-semipreciosas-te-contamos-de-las-mas-importantes/
There are thousands of precious stones in this place, in addition to gold, which is not a stone but a precious soft yellow metal.
Examples that we found here:
Lapis lazulis: The colour is blue similar to sky or deep sea. The origin is Afghanistan, Italy, USA, the Middle East, Egypt and Chile. It has a variety of minerals as calcite and piryte.
Amethysts: The principal colour is violet. The main deposits are in the Urals, Germany, Australia (W), Zambia, Brasil, Uruguay, USA, India, Sri Lanka, Tunisia... It is a variety of Quartz.
Red onix: With red and brown colours. It is a variety of Agatha. Deposits are in Brazil, India, Russia and Asia Minor.
Mother-of-pearl: Provides from the pearly inner layer of pearl-producing mollusks. White colour. Provides from the sea and Australia, Tahiti, Bad, Keshi,
Aventurines: Other variety of quartz with green color. Most of this stones are from India, but USA, Southafrica, Austria have some.
To mark the earthcache as found you will have to answer some questions:To mark the earthcache as found you will have to answer some questions:
1) In the area, what is the base of the background? granite, limestone, or marble. what color?
2) How are precious and semi-precious stones different?
3) How many different stones do you see in the coordinates and names that you think that is/are (see the pictures that are in the description?
4) Do you find it curious that they make a drawing or geometric figure and what is it?
5) Is the gold a precious stone?
6) Take a short shot detail photography of a piece of a semiprecious stone.