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240 Ladies Platinum Blue Star Sapphire Ring Ladies platinum fashion ring ca 1940 containing six VS1, G color 3mm x 1.5mm straight baguettes weighing approximately .30 carats total weight, 24 VS1- VS2, G color round single cut diamonds weighing approximately .30 carats total weight and one 16.5mm x 14.5mm x 12.25mm oval cabochon “Blue Star” sapphire weighing approximately 30 carats. 8.60 dwt. Size 7 Excellent condition. Sapphire is blue with gray and lavender overtones. Sapphire has some natural inclusions on the surface near the edge. Sapphire is slightly loose in mounting. $12,000 - $15,000
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243 Ladies 18 Karat and Platinum Ruby and Diamond Ring by Lebolt Ladies 18k rose gold ring with platinum top, ca 1910. Lebolt & Co. 6mm x 4mm oval cushion center ruby surrounded by 32 VS2-SI1, G color round European cut diamonds weighing approximately 1.25 carats total weight. 4.7 dwt. Size 4.5 Excellent condition. $2,000 - $3,000
241 Ladies Platinum and 18 Karat Aquamarine and Diamond Ring Ladies platinum fashion ring with 18k yellow gold prongs containing one 13.4mm x 9.6mm x 7.55mm octagon deep blue aquamarine weighing 7.31 carats and 40 SI1-SI2, G color round brilliant diamonds weighing approximately .75 carats total weight. 14.2 dwt. Size 7 New. Some small abrasions on aquamarine. $7,000 - $10,000
244 Ladies 14 Karat Tanzanite and Diamond Ring Ladies 14k yellow gold fashion ring containing one 10.6mm x 7.0mm x 4.6mm oval tanzanite weighing approximately 2.72 carats, twelve 5mm x 3mm VS1-VS2, G-H color marquise cut diamonds weighing approximately 1.80 carats total weight and 22 VS1-VS2, G-H color tapered baguette diamonds weighing approximately 3.5 carats total weight. 9.0 dwt. Size 8 Very good condition. Tanzanite has surface abrasions. Some repair work evident on prongs. $5,000 - $7,000
242 Ladies Sapphire and Diamond Three-Stone Ring Ladies 14k white gold three-stone ring containing one 7.8mm x 6.1mm x 4.0mm octagonal cut sapphire weighing approximately 2.16 carats and two SI2-I1, H-I color 5mm trillion cut diamonds weighing approximately .80 carats total weight. 2.6 dwt. Size 7.5 Good condition. $1,000 - $1,500
245 Ladies 14k Blue Topaz and Diamond Ring Ladies 14k white gold fashion ring, ca 1950 containing one 16.0mm x 10.2mm x 7.2mm pear-shaped blue topaz weighing approximately 10.0 carats and 25, SI2-I1, F-G color round full cut diamonds weighing approximately .80 carats total weight. 3.50 dwt. Size 9.5 Very good condition. $900 - $1,200
COWAN’S FINE JEWELRY AND TIMEPIECES