This Gemstones & Collectibles Blow will be dedicated to all aspects of high value gemstones, art, antiques, coins and gold pocket watches. It will also include stories and insights about the gem miners in Colombia, Brazil, Thailand and Zambia.
If a rare piece of art is found in a garage sale this will be written about! A rare coin cache find in a field in the United Kingdom will be news too. The sunken shipwrecks with emeralds, coins and art will be researched. As will the largest gems ever found and dealers in the industry will be news too.
- How to choose the perfect diamond
Diamond is a natural mineral, the hardest on Earth. The four most well-known quality criteria for assessing a diamond are popularly called “4C”, in English for Carat (Weight), Color (Color), Clarity (Purity) and Cut (Size or Cut).
Diamonds are present in the most important moments of our lives. Each diamond is a world and unique because of its characteristics and precisely because of the interesting combination between its four variables approved by the main diamond certification body IGA (American Gemological Institute), it is internationally accepted to certify the code and value of the four variables.
The cut or size is what allows the light to reflect and refract optimally, making the diamond a light box. These are the main sizes. If you see the round is called bright because it is the one with more facets getting a higher brightness. We consider a very good quality carving when it is proportional to the brilliant ideal. Good when it goes away more than 5%. Average when the deviation is 10% and deficient when it is asymmetric.
Clarity with it measures the purity of the stone. How many and where are the stains and impurities, both inside and on the surface. They are the fingerprints that nature leaves in the diamond and help the experts to distinguish them from the synthetic ones and imitations with the magnifying glass of 10 times that the expert has. Today there are treaties, within the small quilatajes, where the impurities have been bombarded to lower their cost.
The color. The spectrum and diamond color ranges from yellow-brown to colorless, the scarcest and also the most valuable. Some have an exceptional color like green, red, blue, pink … they are fancy diamonds and more expensive than whites. The color of the diamond is graduated on a scale that starts at the letter D and goes down the more color the stone has.
The weight. It is expressed in carats, (0.20 gr) as curiosity coincides just with the weight of the seeds of the carob tree and each carat is divided into 100 points, so a diamond 25 points describes one of 0.25 carats. Know that carats do not determine the value being a feature more influenced by the four variables.
Currently we could talk about a fifth feature that prints “Character” to the diamond that can give life or turn off. They are the right proportions in the size and polish of the facets.
- Sapphire Rose, Purple Sapphire
Sapphire presents a very varied palette of colors. There are pink sapphire, purple sapphire, sunset red sapphire, white sapphire, yellow sapphire …
In this article about gems and precious stones I am going to talk about the sapphire Rose and purple Sapphire.
According to the intensity of the color, you can see more details on the same subject.
These gems exist in pastel pink shades as well as darker shades, which are closer to the rubies and carry in their name or description the prefixes of fuse or magenta to name them.
There are some of these varieties of sapphire that are directly ruby. In this debate, even the ICA (International Colored Gemstone Association) has intervened.
The most common form in which these gems are found is the oval size or the shape of the magazine, which is how you can best appreciate its qualities. Although they can also be found in other forms, as with all precious stones.
The most frequent places of origin are Australia, Madagascar, Sri Lanka, Tanzania and Thailand.
As for the variety of purple sapphire, the historical name of this gem is “oriental amethyst”. However, in the difference of the Amethyst. However, you have to compare the stones in beauty. As with the sapphire Rosa, I refer purple, it desists in several shades that are darker or lighter and close to the reddish tones. The value of these stones is based more on the personal taste of each one.
- Colombia To Host World Emerald Symposium in October
Colombia is to hold the first gathering of the world emerald industry, and is inviting all emerald producing countries to take part in the event in Bogota from October 13 to 15. The conference will be followed by a visit to the famous Muzo emerald mine.
The countries invited to attend the conference include Zambia, Brazil, Russia, Afghanistan, Pakistan and Madagascar. In addition, all relevant players are being invited, including governments, the private sector, civil society and all sectors of the emerald mining and manufacturing industry.
The conference will provide a comprehensive analysis of all elements of the emerald industry, including geology, mining, resource management, laws and regulations, manufacturing, treatments, marketing, nomenclature, labs and certification, education, origin and traceability, harmonization of the sector at the global level, relations with consumers, jewelry, branding and overall supply chain integration from mine to market.
The issues will be addressed by high-level experts from governments and the gemstone industry from a range of relevant countries, and there will also be discussions and working groups looking at the promotion of emeralds and addressing industry challenges.
The official program of events, debates and discussions is due to be released shortly. The overall aim of the conference is to boost the image of emeralds as a valuable stone and to deal with a wide range of issues, including safety in mine production and transport and emeralds as a leading global precious gemstone and store of value and to enable the global emerald industry to have a common language and unified approach.
An organized visit of delegates to the emerald mine in Muzo and surrounding area will take place on October 16.
The official organizers of the conference are: the Ministry of Mines of Colombia; Agencias Nacional e Mineria ANM (National Mining Agency); Fedesmeraldas (the Colombian Emerald Federation); ACODES (the Emerald Exporters Association); APRECOL (the Colombian Emerald Miners Association); and ASOCOESMERAL (the Colombia Emerald Dealers Association).
Source : gemstone.org/