Forming part of Phillips’ leading ladies is a truly exquisite unheated Burmese Mogok ruby ring flanked with diamonds. This ring features a centre stone of blood red ruby in an astonishing 5 carats, sourced from Mogok Valley in Myanmar where the world's finest rubies can be found. 

The spectacular ring can be matched—if you so desire—with a very fine, matching pair of 3.50 and 3.24-carat earrings crafted from the same spectacular gemstones. 

Also on the auction rostrum is a vintage Art Deco "Tutti Frutti" double-clip brooch by Cartier. Based on Indian influences, the delightfully colourful piece is meticulously designed featuring exotic gemstone materials from India and was handmade by the legendary Henri Picq, who was also the craftsman that created the first "Tutti Frutti" jewel by Cartier. 

Also by Cartier, a marvellously elegant natural seed pearl and diamond sautoir necklace circa 1910 is a wonderful demonstration of Cartier's delicate craftsmanship from that era. 

A stunning pair of 9.07 and 8.09-carat unheated Burmese sapphire and diamond earrings by Bvlgari will also be on offer. Matching in shape and size, both sapphires are free from heat and have been certified by world-leading gemmological laboratory SSEF to be "Royal Blue" in colour, making them extremely desirable. 

For Hollywood fans, 17 pieces from the estate of Warner Bros. heiress, Betty Warner Sheinbaum, will be up for auction featuring charming vintage jewellery pieces from the scion’s personal collection. 

This includes an Art Deco diamond bracelet set with three oval cabochon rubies against a backdrop of spectacular baguette-cut diamonds, circa the 1930s. Another beautiful piece from this particular collection is an Art Deco 6.21-carat Columbian emerald and diamond ring, circa 1925.

When it comes to jadeite, a true collector will know that colour, texture and translucency all come into play when determining the quality and value. Phillips' jadeite pieces for this auction not only meet, but transcend, even the highest of these standards. 

A stand-out piece, which is destined to be sought after by the world's most discerning collectors, is a very fine glassy jadeite cabochon and diamond demi-parure is set with 33 perfect even-coloured jadeite cabochons, which is extremely difficult to come by.  The necklace is complemented by a matching set of earrings of equal quality.

Phillips Hong Kong's Jewels and Jadeite auction will take place at the Mandarin Oriental Hong Kong on May 28, 2018, following the public viewing from May 24 to 27. Find out more at phillips.com