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The necklace features a flawless 407.48-carat yellow diamond, hanging from a 229.52-carat white diamond necklace intertwined by 18-karat rose gold branchlets. Chopard 201 Carat Watch. Price: $25 ...
Rare in gem-quality over several carats (1 carat = 200 mg), tsavorite has been found in larger sizes. In late 2006, a 925-carat (185.0 g) crystal was discovered. It yielded an oval mixed-cut 325 carat (65 g) stone, one of the largest, if not the largest, faceted tsavorites in the world.
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 ...
Gadolinite; Gahnite; Gahnospinel; Garnet group: Pyralspite. Almandine; Pyrope; Spessartine; Ugrandite. Andradite. Demantoid; Melanite; Topazolite; Grossular ...
Nearly all tanzanite is heated at low temperatures to remove brown undertones and give a more desirable blue / purple color. [44] A considerable portion of all sapphire and ruby is treated with a variety of heat treatments to improve both color and clarity.
In fact, one fine jewelry collector says the "Demantoid is among the most expensive of all garnets" with some of the better pieces worth as much as $10,000 per carat.
Add that, plus the cost of the pendants, which were worth about $12,000 ... and you've got a whopping total of $257,000. You think that's a lot of money. Well, today, that 3-piece set is valued ...
Tanzanite is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of vanadium. [3] Tanzanite belongs to the epidote mineral group. Tanzanite is only found in Simanjiro District of Manyara Region in Tanzania , in a very small mining area approximately 7 km (4.3 mi) long and 2 km ...
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