Power of Gemmology By Prachur Singhal

WHERE DOES THE WORD EMERALD COME FROM: When I did some research, most sources said it came from the ancient Greek word for green: smaragdus. But some speak about the origins in the Semitic languages (origins in Afro-asiatic language family, today the biggest Semitic languages are Arabic, Amharic, Tigrinya, Hebrew and Maltese) Faberge and Gemfields, created this fairtrade necklace called  ....the Romanov collier LET’S START FIRST WITH SOME FACTS BEFORE GOING TO MYTHS AND STORIES! Emerald is found and mined in many places around the globe. Most famous, perhaps, are the mines in Colombia. Other countries are f.e. Zambia, Afghanistan and Brazil. Emerald is always green. The deeper the color, the more valuable the stone. Piaget Emerald and diamond ring, Moksh Zambian emerald and diamond earrings, stunning necklace by  Narayan Jewellers Emerald has always some inclusions. If it’s without any inclusion, it’s more likely to be a synthetic version. Emerald is tre...

The Chinese retail market has been cooling off, but  jade  mining in the Kachin province of Myanmar has been on the increase, causing a massive inventory buildup, according to a report by the Ash Center for Democratic Governance and Innovation of Harvard University. The report is based on information from government sources and traders in Hpakant, Kachin province, the 30-square-mile source for nearly all jadeite. The authors noted that production began to expand in 2015 and jade dealers in Hong Kong corroborated the report’s observation of large and growing stockpiles of the gem in warehouses near the Myanmar border and dealers’ safes. It does not estimate the size of jade stocks, but interviews with others involved in or monitoring the jade trade agree it is extremely large. “If China wanted to whittle down their stockpiles, they probably could do without (newly produced) jade for five to 10 years,” said one Myanmar-based official with close connections to dealers and the go...

JEWELRY CARE TIPS Always: Apply lotion, cosmetics, hairspray and perfume before dressing in jewelry. When undressing, wipe each piece with a clean soft cloth to remove oils and perspiration. Store in a fabric-lined box, separately or individually-wrapped in tissue to prevent scratches. Never: Never wear jewelry when doing physical work such as housekeeping, gardening or exercise. Never expose jewelry to household cleaning products. Never expose jewelry to chlorine swimming pools or hot tubs. Tips for Cleaning: Follow the instructions appearing on the label or box. Clean in a secure location, not the rim of a sink where a piece may slip down the drain. Use only a soft brush, never sharp or hard objects, to remove dirt or particles. Clean your jewelry often; lotions, soaps and skin oils alter the optical properties of diamonds and gemstones, causing them to look dull. Seriously soiled jewelry should be cleaned professionally. Clean diamond jewelry with ...

Check list to help you make Gemstone's best buying decision: 1. Always take a gemstone’s certificate provided by an internationally recognized laboratory. 2. Look for the status of treatment (heated or unheated) carefully in the certificate. 3. Conversion of carat and ratti should be clear. Carat is the international unit for weight of gemstones, calculate and buy in carats. 4. For a genuine purchase decision stay with a professional or a jeweller with serious gemological training. 5. You must take a detailed bill of your purchase; it works as an undisputed future reference document. Conversion from Carat and Ratti to mg 1 Carat = 200 mg 1 Ratti = 121.5 mg (in ayurveda this Rati is used) or 1 Ratti = 182.25 mg In India people generally buy and sell gemstones according to Rati weight, but it is advised to buy them according to Carat weight because carat is a standard measurement. Ayurvedic Ratti 1 tola = 11.664 gms 1 tola = 12 masha 1 masha = 8 ratti 1 tola ...

Figure 1. These 23 HPHT-grown synthetic diamond melee, ranging from 0.002 to 0.012 ct, were identified recently at GIA’s Hong Kong lab.  In recent years, significant amounts of colorless to near-colorless HPHT-grown synthetic diamond melee have been produced for the jewelry industry. As a result, the separation of natural from synthetic melee diamonds has become increasingly critical. GIA offers melee diamond screening services using conventional gemological techniques and analytical methods such as photoluminescence and infrared absorption spectroscopy. In September 2016, GIA’s Hong Kong laboratory received 135 melee diamonds for identification service (see figure 1). Of these, 131 were confirmed to be HPHT synthetics and four were natural diamonds. It is interesting to find natural diamonds mixed in HPHT-dominated groups as “contamination.” The tested melee were colorless to near-colorless round brilliants, ranging from 0.002 to 0.012 ct. Infrared absorption spectroscopy per...

This emerald contains a brown crystal of the rare mineral parisite. There is also an oil-filled cavity showing a blue and orange flash effect, along with two large trapped gas bubbles. This inclusion suite verifies the natural origin of this emerald; it also confirms that the stone, which shows signs of clarity enhancement, is from Colombia.  This short introduction accompanies a chart illustrating some of the characteristic inclusions and other internal features seen in emerald (see above). Over the past 50 years, the observation of inclusions in colored gemstones, particularly emerald, has become an essential foundation for identification, quality analysis, and origin determination. This chart contains a selection of photomicrographs of natural, synthetic, and treated emeralds. It is by no means comprehensive; photomicrographs of features not seen here can be found in many gemological textbooks. The images show the visual appearance of numerous features a gemologist might ob...

Commitment to Service, Quality & Excellence D&G is an international standard Gemological Laboratory certified by ISO 9001:2008 and registered under trademark act ,with state of the Technology & Expertise to perform scientific & precise analysis of each & every variety of stone(loose or studded). D&G has a team of professionally qualified Gemologists, with the proliferation of imitation, synthetic & treated Gemstones in the market, the need is to look for independent, unbiased and expert opinion. With its reliable & quality services over the year, today D&G has become a trusted name for Testing & certification of Diamonds & Gemstones. So, whenever you buy a Gemstone, Diamond or Jewellery, always insist on D&G Laboratory Reports. Our customers value us not only for our expertise and experience, but for our impeccable customer service. With its consistent, reliable & quality service over the years, today D&G has become a trus...