Gemologists divide diamonds into two types based on the levels of nitrogen in the stone’s chemical structure. Type IIa diamonds are the most scientifically pure and are noted for their clarity. A 5-carat Type IIa diamond will be featured in the upcoming Fine Jewels auction, offered by Fortuna Auction. The diamond is placed in an 18-karat white gold ring and is flanked by two smaller diamonds. Another ring presented in the sale comes from the Harry Winston jewelry house. The pear-shaped piece follows the jeweler’s preference for elevating gemstones above metals.
Other brands represented in this auction include Tiffany & Co., Cartier, and Rolex. A Tiffany & Co. drop necklace is among the featured lots. Diamonds and aquamarines are alternated with morganite, a pink variation of beryl that resembles emeralds. The alternating pink-and-blue stones are ringed with small, brilliant-cut diamonds. Notable watch lots include a Rolex President Daydate in white gold and a vintage Piaget watch with a silver and gold Florentine finish. Explore the full catalog and register to bid on Bidsquare.
Lot Categories:Jewelry (181), Bracelets & Bangles (25), Earrings (24), Necklaces & Pendants (30), Brooches & Pins (21), Rings (73), Watches & Clocks (19)
# of Lots:191
Price Range:$1,000 - $220,000
Interesting lots include:
|Item Image||Item Name||Estimate|
|5.00-Carat Marquise-Cut Diamond Ring, D/IF Type IIa||
|Harry Winston 4.51-Carat Pear-Shaped Diamond Ring||
|Tiffany & Co. Aquamarine Morganite and Diamond Drop Necklace||
|13.05-Carat Ceylon Unheated Color Change Sapphire||
|Rolex President Daydate Ref. 118239 in 18K White Gold Diamond Dial||
|Victorian Diamond Pendant Necklace||
- Bracelets & Bangles
- Brooches & Pins
- Necklaces & Pendants
- Objects de Vertu
- Pocket Watches
- Sets & Demi-Parure
- Watches & Clocks
- Cut Diamond Ring
- Diamond Drop Necklace
- Diamond Jewelry
- diamond rings
- Harry Winston
- Luxury Jewelry
- Tiffany & Co
- Vintage Jewelry
Excellent Fall Estates Auction
Born in 1757, Aaron Willard was considered one of the most significant horologists of his time....
Cincinnati Collections: Online Auction
The upcoming Cowan’s Auctions online sale showcases a selection of American, English, and European artifacts. It...