North American Auction Company
Live Auction

Fine Montana Collector Sale - April 2023

Sat, Apr 22, 2023 11:00AM EDT
Lot 207

Brilliant Tanzanite & Diamond Platinum Necklace

Estimate: $23,000 - $32,000

Bid Increments

Price Bid Increment
$50 $10
$100 $25
$500 $50
$1,000 $100
$2,000 $250
$5,000 $500
$10,000 $1,000
$50,000 $2,500
Featured in this lot is a brilliant tanzanite and diamond platinum necklace. The necklace is wonderfully and professionally crafted platinum construction that shows a 'Oscar Freidman' and shows a 'PT950' mark next to the hallmark. The center stone is is a pear cut tanazanite stone that measures 15.56 x 10.06 x 7.34mm and shows a blueish violet coloration and a total weight of 8.32 carats. The centerstone is profusely decorated by a total of 62 round brilliant cut diamonds that shows a clarity of VS2 - SI2 and a coloration of G - H and a total weight of 2.38 carats. Tanzanite is a very rare precious gemstone that is only found in the Usumburu Mountains that border the Umba Valley of northern Tanzania. It was originally discovered in 1967 by Tiffany & Company, who named the stone Tanzanite. This example is unique due to its exceptional pleochroism (an optical phenomenon in which a stone has different colors when observed at different angles). The measurement from clasp to clasp is 18". NK014795*

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