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Tsavorite or tsavolite is a variety of the garnet group species grossular, ... (1 carat = 200 mg), tsavorite has been found in larger sizes. In late 2006, a 925-carat ...
He also practiced on a 31.57 carat tsavorite, working nine to eleven hours a day for five days on the smaller stone. The actual cutting of the larger tsavorite took about a month. The entire process was thoroughly documented from beginning to end. The finished stone is a square cushion cut with 177 facets, and the final weight is 116.76 carats ...
This is a partial list of the largest non-synthetic diamonds with a rough stone (uncut) weight of over 200 carats (40 grams). [1] The list is not intended to be complete—e.g., the Cullinan (formerly Premier) mine alone has produced 135 diamonds larger than 200 carats since mining commenced.
The socio-economic dynamics of the gemstone industry are shaped by market forces and consumer preferences and typically go undiscussed. Changes in demand and prices can significantly affect the livelihoods of those involved in gemstone mining and trade, particularly in developing countries where the industry serves as a crucial source of income ...
Demantoid is the green gemstone variety of the mineral andradite, a member of the garnet group of minerals.Andradite is a calcium- and iron-rich garnet.The chemical formula is Ca 3 Fe 2 (SiO 4) 3 with chromium substitution as the cause of the demantoid green color.
The study notes that the reference dose for decaBDE is 7,000 nanograms per kilogram of body weight a day; the reference dose for a 60-kilogram (132-pound) adult, it calculated, would be 42,000 ...
There are considerable price shifts near the edges of the size bands, so a 0.49 carats (98 mg) stone may list at $5,500 per carat = $2,695, while a 0.50 carats (100 mg) stone of similar quality lists at $7,500 per carat = $3,750. Stones near the top of a size band (or rarer fancy coloured varieties) tend to be uprated slightly.
Highest listing price on eBay: $350 First introduced in the ’90s, the polar bear crystal figurine sits on top of a silver mirrored plate, adding to his shining abilities under a lighted display.