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The necklace contained over 250 carats (50 g; 1.8 oz) of diamonds, among them a 16 carats (3.2 g; 0.11 oz) D-color Flawless clarity marquise cut. The Graff Pink of 24.78 carats, graded Fancy Intense Pink colour and with a November 2010 Sotheby's auction pre-sale estimate price of US$27 million to US$38 million (£17 million to £24 million).
As a teenager, Diana wore a gold choker with a 'D' pendant. [9] In 2017, a sterling silver 'D' necklace owned by the princess as a teenager sold at auction for around US$8,000. [10] [9] Diana was photographed wearing her initial necklace as a nursery assistant while still dating Charles. For her 16th birthday her friends gifted her a gold ...
This gold-plated pendant (it comes in white, yellow or rose gold) holds an oval-cut simulated diamond crystal surrounded by sparkly chips on an 18-inch hypoallergenic chain. The made-in-the-USA ...
Virtually all blue topaz, both the lighter and the darker blue shades such as "London" blue, has been irradiated to change the color from white to blue. Most green quartz (Oro Verde) are also irradiated to achieve the yellow-green color. Diamonds are mainly irradiated to become blue-green or green, although other colors are possible.
Detailed view of the recreated great Golden Fleece of king Louis XV of France. Below the 107 carats (21.4 g) spinel Côte de Bretagne hangs the French Blue diamond and the fleece itself, set with hundreds of yellow diamond replicas. The Tavernier Blue was the precursor diamond to the Blue Diamond of the French Crown (aka the French Blue).
Color grading of diamonds was performed as a step of sorting rough diamonds for sale by the London Diamond Syndicate. As the diamond trade developed, early diamond grades were introduced. Without any co-operative development, these early grading systems lacked standard nomenclature and consistency. Some early grading scales were; I, II, III; A, AA, AAA; A, B, C. Numerous terms