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http://www.bjbead.com/coral/792.html
Jun 16, 2010 · Wearing coral is become more and more popular, so many people want to buy them for their teachers or friends or parents or others, but when they buy it, you don’t know which real coral, so the following is about how to Identify genuine and fake coral gemstone jewelry . 1. If the coral is faked, you will find that there is an obvious vertical texture, color, single, and more important is: it gives a feeling of not living, not the unique pore characteristics of coral.
https://oureverydaylife.com/tell-coral-jewelry-real-14940.html
One way to test your coral item is to see how it reacts with acid. Pick a part of your coral jewelry that isn’t easily exposed (say the underside of a ring or inside of a bracelet) and swab it gently with lemon juice to see if tiny bubbles form on the coral’s surface.
http://www.bjbead.com/coral/coral-identification/
There are hundreds of coral species, many with different colors, growth forms, and colony sizes. Meanwhile there are so many different styles of coral jewelry, so we should know the basic coral idenfication so that we can pick the real coral. View Coral Identification gallery
https://www.leaf.tv/articles/how-to-tell-if-coral-jewelry-is-real/
Coral jewelry has been found in ancient grave sites from as far back as 10,000 B.C. and was especially popular during Victorian times and in the 1920s. But there are some pretty convincing fakes out there. Plastic, bone, shell, fossil ivory, howlite and onyx are some of the materials used to make imitation coral.
https://www.eredijovon.com/en/blog/news/italian-red-coral-jewelry-genuine-how-to-recognize--n12
May 27, 2017 · Genuine Italian red coral jewelry: four things to do to recognize it. Look carefully at the little balls of a necklace: the pearl must have imperfections! Real Coral is not perfect, plastic is! Rough coral resembles a transversally cut tree that shows the concentric circles of repeated settlements.
https://www.gemsociety.org/article/coral-jewelry-and-gemstone-information/
The International Gem Society (IGS) has a list of businesses offering gemstone appraisal services. Coral values are based on hue, saturation, size, cut, and polish. Top values for calcareous coral go to red, pink, and orange pieces. Other colors are graded separately.
https://www.wirejewelry.com/jewelry-making-blog/2434/testing-real-coral/
Jun 16, 2010 · Most of the affordable coral on the jewelry maker’s market today, including much of Wire-Sculpture’s coral beads and coral cabs, is 100% legal bamboo coral, and comes from the Philippines. This is a type of coral, not a type of bamboo! Bamboo coral’s natural color is gray, which means that most of the red coral available today has been dyed.
https://www.gemstoneuniverse.com/which-tests-to-identify-real-red-coral-from-fake-coral.php
Chemical tests for a Red Coral. Since Coral is made up of Calcium Carbonate it will react with HCL ( Hydrochloric Acid) to give a effervescent bubbling action. Genuine Coral shall react with HCL to produce CO2 ( Carbon Di Oxide) and shall react with lime solution to form white limestone. This chemical reaction is a method to identify a real coral from other materials such as plastic or bone.
https://www.thebeadtraders.com/blogs/news/natural-dyed-coral-beads-how-to-spot-the-difference
Jun 03, 2019 · Purchase a piece of fresh, raw turmeric and rub it against the coral’s surface. If you notice any red marks on the turmeric, it is an imitation gemstone. True coral stones will not alter turmeric’s surface. The acetone test; To test whether your coral bead was dyed, take a small cotton swab dipped in acetone and rub it across the gem’s surface.
https://www.medicinemangallery.com/native-american-art/indian-jewelry/identify-native-american-indian-jewelry-hallmarks
Native American Indian Jewelry Hallmark Identification; ... Carlos Diaz - Mexican Coral and Handmade Sterling Silver Pin/Pendant and Clip-On Earrings Set c. 1960s (J91046-0220-004) $ 260.00. Carlos White Eagle (1937-2013) (Apache) - Turquoise, Diamond, and 14K Gold Ring c. 1980s, size 5 …
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