A Diamond and Platinum Ring, circa 1920

With a graduated quintet motif centering an old European-cut diamond weighing approximately 1.15 carats, between pairs of smaller old European-cut diamonds, within a finely pierced and bombé knife-edge bar filigree ground accented by small rose-cut diamonds, mounted in platinum

Hammer Price: $1,800

A Pair of Diamond and White Gold Ear Pendants

The articulated pendants composed of graduated pavé-set bombé diamond discs between circular links, mounted in 18k white gold

Hammer Price: $900

A Diamond and Gold Daisy Brooch, Paloma Picasso, Tiffany & Co.

From the Paloma Picasso collection, the stylised daisy centering a pavé-set diamond pistil amid wirework petals, mounted in platinum and 18k gold, signed Tiffany & Co., Paloma Picasso

Hammer Price: $2,000

A Diamond and Platinum Ring

Centering a round diamond weighing approximately 0.70 carat, between a pair of trilliant-cut diamonds, amid a scalloped border and shoulders of small round diamonds, mounted in platinum

Hammer Price: $1,700

A Pair of Jadeite, Ruby and Gold Ear Pendants

Suspending a pair of jadeite beads measuring approximately 14.4 mm, from a line of tiny rubies, mounted in 18k gold

Hammer Price: $400

A Jadeite, White Gold and Sterling Silver Pendant Necklace

Suspending a circular jadeite disc measuring 38.00 mm by 3.00 mm, within a conforming frame decorated with foliate details, mounted in 18k white gold, together with a curb linking sterling silver necklace

Hammer Price: $300

A Ruby, Diamond and Gold Convertible Ring

The slightly tapering eternity band designed with a central course of rubies on one side and the reverse with a series of diamonds, between two hinged bands of graduated round diamonds, the diamond borders to be worn accenting either central course, mounted in 18k gold

Hammer Price: $750

A Lapis Lazuli, Turquoise and Gold Necklace

The double strands of lapis lazuli beads, joined to turquoise beads alternated with lapis lazuli discs, mounted in 18k gold

Hammer Price: $600

A Sapphire, Emerald and Diamond Torsade Necklace

Comprising twelve facetted bead strands composed principally of sapphires and emeralds, joined to an 18k gold clasp inset with small diamonds

Estimate CDN: $2,400 - $3,000

An Enamel and Gold Butterfly Brooch

Designed as a butterfly with hinged plique-a-jour polychrome enamel wings and ruby eyes, mounted in 18k gold

Estimate CDN: $700 - $1,100

A Diamond Solitaire and Gold Ring

Set with an old European-cut diamond weighing approximately 1.15 carats, mounted in platinum and 14k gold

Estimate CDN: $4,000 - $6,000

A Ruby, Emerald, Diamond and White Gold Ring

The wide band encircled by two rows of round diamonds, the openwork centre panel accented in a random pattern by bezel-set rubies, emeralds and diamonds, mounted in 19k white gold

Estimate CDN: $2,200 - $2,400

An Aquamarine and White Gold Ring

Set with a cushion-shaped aquamarine weighing approximately 16.00 carats, mounted in 14k white gold

Hammer Price: $850

A Diamond and Gold Ring, Mauboussin

The curving band decorated with a "Toit" motif, the peak's sides accented by round diamonds weighing approximately 0.45 ct, mounted in 18k gold, signed Mauboussin, Paris, 25594

Hammer Price: $850

A Diamond and Gold Ring

Of hammered texture, designed with a wide bombé dome randomly accented by round diamonds, mounted in highly polished 18k gold, signed Ippolita

Hammer Price: $1,700

A Diamond and White Gold Eternity Ring

The fitted band encircled by thirty-nine baguette-cut diamonds weighing approximately 1.95 carats, mounted in 18k white gold

Hammer Price: $1,200

An Enamel and Gold Snake Ring

Designed as a coiled snake with diamond eyes, embellished with white and blue enamel, mounted in 18k gold

Hammer Price: $1,300

An Antique Emerald, Diamond and Enamel Pendant, circa 1905

Centering a rectangular emerald weighing approximately 1.40 carats, within an openwork surround accented by green and red enamel and rose-cut diamond floral motifs, mounted in platinum and 18k gold

Hammer Price: $950

A Diamond and White Gold Bangle Bracelet

The oval hinged hoop of openwork design set with round diamonds weighing approximately 4.00 carats, mounted in 14k white gold

Hammer Price: $2,900

A Lapis Lazuli, Cultured Pearl and Gold Necklace

Composed of seventeen cultured pearls measuring 7.1-7.3 mm, alternated with lapis lazuli beads and textured 18k gold links

Estimate CDN: $2,400 - $3,400

A Midsize Stainless Steel 'Oyster Perpetual' Wristwatch, Rolex, circa 1991

Automatic movement, black dial, applied baton numerals, sweep seconds, joined to a Rolex Jubilee bracelet, with original guarantee certificate

Hammer Price: $1,700

A Diamond and Gold Ring

Designed with a double upper shank, the lower band accented by a row of small round diamonds, and the top band decorated by raised crossover swirls centering a round diamond weighing approximately 0.65 carat, mounted in 18k white and yellow gold

Hammer Price: $750

A Sapphire Bead and Gold Necklace

The single strand comprising 314 petite sapphire beads graduated from 6.8 mm to 2.1 mm, joined to a 14k gold clasp

Estimate CDN: $300 - $500

A Diamond Solitaire and White Gold Ring

Set with an emerald-cut diamond weighing 1.32 carats, mounted in 19k white gold

Hammer Price: $3,600

An Antique Amethyst and Split-Pearl Pendant

Set with a round amethyst weighing approximately 13.00 carats, surrounded by a graduated row of split-pearls, topped by a small bail further set with split-pearls, mounted in 14k gold, 19th century

Hammer Price: $550

A Diamond and Platinum Ring

Set with a round diamond weighing 2.18 carats, flanked by a pair of tapered baguette-cut diamonds, mounted in platinum

Hammer Price: $16,000

A Pair of Mabe Pearl and Gold Ear Clips

The circular forms centering a pair of mabe pearls measuring 10.0 mm, within a scalloped quilted frame, mounted in 18k gold

Estimate CDN: $900 - $1,200