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https://www.amazon.com/Gemstones-Quality-Value-3-Jewelry/dp/4418019022
Buy the selected items together. This item: Gemstones: Quality and Value, Volume 3 - Jewelry by Yasukazu Suwa Hardcover $145.00. Only 1 left in stock (more on the way). Ships from and sold by Amazon.com. FREE Shipping. Details. Gemstones: Quality and Value, Volume 1 by Yasukazu Suwa Hardcover $75.06. Only 6 left in stock - order soon.Author: Yasukazu Suwa
https://www.amazon.com/Gemstones-Quality-Value-Yasukazu-Suwa/dp/4418999027
Just as the quality of an automobile and its corresponding value can be reflected in its price-luxury cars may cost $50,000, family sedans $20,000, and economy cars $10,000-the values of each gemstone have been separated into the three quality zones of gem quality, jewelry quality, and accessory quality. The basis of judging gemstone value lies ...4.2/5(6)
https://www.gia.edu/gia-news-research/value-factors-design-cut-quality-colored-gemstone-value-factors
Aug 09, 2018 · Photo: Robert Weldon/GIA Part 1 of 5 in the series: Value Factors, Design, and Cut Quality of Colored Gemstones (Non-Diamond) Originally published in GemGuide in 2016, this comprehensive series examines the quality factors that influence the value of colored gemstones, with a specific emphasis on the role cut quality plays in determining the value of faceted gems.
https://www.gemsociety.org/article/a-consumers-guide-to-gem-grading/
For example, a quarter-carat topaz may cost $60 per carat, or $15 total. A half-carat topaz, with the same color, clarity, and cutting grades, might cost $100 per carat, or $50 total. For a topaz one-carat and over in size, the price could reach $200 per carat. So, a one-carat stone will cost $200 total, not $60 or $100.
https://www.gemsociety.org/article/grandidierite-jewelry-and-gemstone-information/
Apr 06, 2021 · Since its discovery in 1902, most gem-quality grandidierite has been translucent. Cabochons cut from this material look very attractive and may even appear jade-like. Recent discoveries of transparent material in Sri Lanka (around 2000) and a new deposit in Madagascar (2014) have resulted in beautiful, faceted gemstones.Colors: Blue-green
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