Magnificent Jewels Including The Collection of Rosamund Kwan

$400,289per carat Lot 1958 Important ruby and diamond ring, by Cartier 5.32 ct · Burma ×0.9 high estimate Estimate USD 1.85m – 2.30m USD 2,129,535$400,289 per carat $256,055per carat Lot 1893 Rare coloured diamond, diamond and garnet brooch 5.02 ct · Fancy Intense Orangy Pink ×0.8 high estimate Estimate USD 1.02m – 1.53m USD 1,285,395$256,055 per carat $120,334per carat Lot 1965 Magnificent diamond ring 19.61 ct · D colour ×1.0 high estimate Estimate USD 1.66m – 2.30m USD 2,359,755$120,334 per carat $94,796per carat Lot 1974 Superb sapphire and diamond ring, by Bulgari 8.50 ct · Kashmir · No heat ×0.8 high estimate Estimate USD 640k – 1.02m USD 805,770$94,796 per carat $94,614per carat Lot 1954 Impressive diamond ring, mounted by Boucheron 15.37 ct · D colour · VS2 ×0.9 high estimate Estimate USD 1.15m – 1.53m USD 1,454,223$94,614 per carat $91,327per carat Lot 1892 Important coloured diamond and diamond ring 8.47 ct · Fancy Vivid Yellow · VS1 ×0.9 high estimate Estimate USD 614k – 870k USD 773,539$91,327 per carat $74,397per carat Lot 1871 Important diamond ring, by Cartier 13.43 ct · D colour · VS1 ×1.4 high estimate Estimate USD 448k – 703k USD 999,155$74,397 per carat $69,461per carat Lot 1878 Rare coloured sapphire and diamond ring 19.61 ct · Burma · No heat ×1.3 high estimate Estimate USD 640k – 1.02m USD 1,362,135$69,461 per carat $56,441per carat Lot 1972 Important emerald and diamond ring 10.85 ct · Colombia ×0.8 high estimate Estimate USD 486k – 742k USD 612,385$56,441 per carat $50,320per carat Lot 1886 Important diamond ring, by cusi 12.49 ct · H colour · VVS1 ×1.8 high estimate Estimate USD 230k – 358k USD 628,501$50,320 per carat $48,362per carat Lot 1964 Cartier diamond ring 10.33 ct · F colour · VS1 ×0.8 high estimate Estimate USD 409k – 614k USD 499,577$48,362 per carat $43,868per carat Lot 1967 Magnificent coloured diamond ring 60.79 ct · Fancy Vivid Yellow · VS2 ×0.7 high estimate Estimate USD 2.30m – 3.58m USD 2,666,715$43,868 per carat

$256,055per carat Lot 1893 Rare coloured diamond, diamond and garnet brooch 5.02 ct · Fancy Intense Orangy Pink ×0.8 high estimate Estimate USD 1.02m – 1.53m USD 1,285,395$256,055 per carat $91,327per carat Lot 1892 Important coloured diamond and diamond ring 8.47 ct · Fancy Vivid Yellow · VS1 ×0.9 high estimate Estimate USD 614k – 870k USD 773,539$91,327 per carat $43,868per carat Lot 1967 Magnificent coloured diamond ring 60.79 ct · Fancy Vivid Yellow · VS2 ×0.7 high estimate Estimate USD 2.30m – 3.58m USD 2,666,715$43,868 per carat $35,313per carat Lot 1887 Coloured diamond ring 5.02 ct · VS2 ×1.5 high estimate Estimate USD 83k – 122k USD 177,269$35,313 per carat $28,721per carat Lot 1935 Diamond and coloured diamond pendent necklace 5.05 ct · D colour · VVS2 ×0.6 high estimate Estimate USD 128k – 256k USD 145,039$28,721 per carat $19,653per carat Lot 1812 Cartier coloured diamond and diamond pendent necklace 2.87 ct · Fancy Intense Yellow · VS1 ×0.8 high estimate Estimate USD 45k – 70k USD 56,404$19,653 per carat $19,060per carat Lot 1942 Important coloured diamond ring 12.26 ct · Fancy Intense Yellow · VS1 ×1.2 high estimate Estimate USD 128k – 192k USD 233,673$19,060 per carat $13,226per carat Lot 1890 Coloured diamond and diamond ring 7.92 ct · Fancy Yellow · VVS1 ×0.9 high estimate Estimate USD 83k – 122k USD 104,750$13,226 per carat $5,797per carat Lot 1889 Coloured diamond and diamond ring 15.29 ct · Fancy Light Brown-Yellow · VS2 ×1.0 high estimate Estimate USD 61k – 87k USD 88,635$5,797 per carat $153,096price paid Lot 1814 No reserve - coloured diamond and diamond earrings Fancy Vivid Yellow · VS2 ×1.0 high estimate Estimate USD 115k – 153k USD 153,096 Lot 1966 Important coloured diamond and diamond ring 2.62 ct · Fancy Intense Purplish Pink · I1 Estimate USD 537k – 767k Not sold Lot 1888 Coloured diamond and diamond ring 1.01 ct · Fancy Vivid Purplish Pink Estimate USD 320k – 448k Not sold

$120,334per carat Lot 1965 Magnificent diamond ring 19.61 ct · D colour ×1.0 high estimate Estimate USD 1.66m – 2.30m USD 2,359,755$120,334 per carat $94,614per carat Lot 1954 Impressive diamond ring, mounted by Boucheron 15.37 ct · D colour · VS2 ×0.9 high estimate Estimate USD 1.15m – 1.53m USD 1,454,223$94,614 per carat $74,397per carat Lot 1871 Important diamond ring, by Cartier 13.43 ct · D colour · VS1 ×1.4 high estimate Estimate USD 448k – 703k USD 999,155$74,397 per carat $50,320per carat Lot 1886 Important diamond ring, by cusi 12.49 ct · H colour · VVS1 ×1.8 high estimate Estimate USD 230k – 358k USD 628,501$50,320 per carat $48,362per carat Lot 1964 Cartier diamond ring 10.33 ct · F colour · VS1 ×0.8 high estimate Estimate USD 409k – 614k USD 499,577$48,362 per carat $43,056per carat Lot 1885 Important diamond ring 6.55 ct · D colour ×0.8 high estimate Estimate USD 230k – 358k USD 282,020$43,056 per carat $1,684,443price paid Lot 1955 Impressive diamond and ruby earrings, by Moussaieff D colour · VVS1 ×1.1 high estimate Estimate USD 1.13m – 1.53m USD 1,684,443 $564,039price paid Lot 1963 Diamond earrings D colour · VVS2 ×0.9 high estimate Estimate USD 409k – 640k USD 564,039 $515,693price paid Lot 1870 Diamond earrings D colour · VVS1 ×0.7 high estimate Estimate USD 512k – 767k USD 515,693 $515,693price paid Lot 1941 Important diamond earrings F colour · VS2 ×0.7 high estimate Estimate USD 448k – 703k USD 515,693 $241,731price paid Lot 1847 Diamond earrings E colour · VS2 ×0.8 high estimate Estimate USD 192k – 320k USD 241,731 $193,385price paid Lot 1924 Diamond earrings G colour · I1 ×1.3 high estimate Estimate USD 102k – 153k USD 193,385 $153,096price paid Lot 1948 Diamond ring I colour · VS2 ×1.5 high estimate Estimate USD 77k – 102k USD 153,096 $80,577price paid Lot 1848 Diamond earrings D colour · VS2 ×0.8 high estimate Estimate USD 64k – 102k USD 80,577 $67,685price paid Lot 1866 No reserve - diamond earrings D colour · I1 ×0.8 high estimate Estimate USD 58k – 83k USD 67,685 Lot 1940 Important diamond ring 10.00 ct · D colour · VVS1 Estimate USD 640k – 1.02m Not sold Lot 1961 Diamond earrings E colour · VS1 Estimate USD 230k – 358k Not sold

$499,577price paid Lot 1923 Important Cartier Art Deco diamond bracelet ×1.6 high estimate Estimate USD 192k – 320k USD 499,577 $128,923price paid Lot 1947 Unique 19th century diamond tiara/necklace ×0.8 high estimate Estimate USD 102k – 153k USD 128,923 $112,808price paid Lot 1949 Art Deco diamond bracelet ×1.5 high estimate Estimate USD 49k – 74k USD 112,808 $93,469price paid Lot 1952 Art Deco multi-gem bracelet ×1.9 high estimate Estimate USD 36k – 49k USD 93,469 $41,900price paid Lot 1825 Cartier Art Deco diamond double-clip brooch ×1.1 high estimate Estimate USD 26k – 38k USD 41,900

$5,889,795price paid Lot 1965 A Exquisite diamond rivière ×0.8 high estimate Estimate USD 4.86m – 7.42m USD 5,889,795 $2,820,195price paid Lot 1983 'Sparkling waves on a verdant sea' magnificent jadeite, diamond and sapphire necklace, by Etcetera ×0.7 high estimate Estimate USD 2.56m – 3.84m USD 2,820,195 $2,052,795price paid Lot 1956 Stunning diamond, ruby and coloured diamond pendent necklace D colour · VVS1 ×0.9 high estimate Estimate USD 1.53m – 2.30m USD 2,052,795 $1,822,575price paid Lot 1959 Important ruby and diamond earrings ×0.8 high estimate Estimate USD 1.64m – 2.30m USD 1,822,575 $564,039price paid Lot 1981 Unique jadeite pendent necklace ×0.8 high estimate Estimate USD 486k – 742k USD 564,039 $427,058price paid Lot 1945 Important diamond necklace ×0.7 high estimate Estimate USD 384k – 640k USD 427,058 $322,308price paid Lot 1946 Important diamond bracelet ×0.8 high estimate Estimate USD 256k – 384k USD 322,308 $290,077price paid Lot 1859 No reserve - ruby and diamond necklace ×0.4 high estimate Estimate USD 448k – 703k USD 290,077 $282,020price paid Lot 1937 Impressive diamond pendent necklace ×0.8 high estimate Estimate USD 230k – 358k USD 282,020 $241,731price paid Lot 1979 Rare jadeite pendent necklace ×0.7 high estimate Estimate USD 230k – 358k USD 241,731 $241,731price paid Lot 1902 Jadeite bead and mutli-gem necklace ×0.8 high estimate Estimate USD 192k – 320k USD 241,731 $241,731price paid Lot 1932 Jadeite and multi-gem pendent necklace ×0.8 high estimate Estimate USD 192k – 320k USD 241,731 $241,731price paid Lot 1933 Jadeite and diamond pendent necklace ×0.8 high estimate Estimate USD 192k – 320k USD 241,731 $241,731price paid Lot 1900 Important jadeite and diamond ring ×1.3 high estimate Estimate USD 113k – 192k USD 241,731 $225,616price paid Lot 1957 Emerald and diamond ring ×1.0 high estimate Estimate USD 179k – 230k USD 225,616 $217,558price paid Lot 1920 Alexandrite and diamond ring ×1.4 high estimate Estimate USD 102k – 153k USD 217,558 $177,269price paid Lot 1843 Jadeite carving ×1.2 high estimate Estimate USD 102k – 153k USD 177,269 $177,269price paid Lot 1939 Diamond necklace ×1.2 high estimate Estimate USD 102k – 153k USD 177,269 $23,699per carat Lot 1865 Diamond ring 5.10 ct · D colour · VS2 ×0.8 high estimate Estimate USD 102k – 153k USD 120,866$23,699 per carat $14,468per carat Lot 1943 Important diamond earrings 8.02 ct · T colour · VS1 ×0.8 high estimate Estimate USD 102k – 153k USD 116,031$14,468 per carat $116,031price paid Lot 1978 Pair of jadeite bangles ×0.8 high estimate Estimate USD 102k – 153k USD 116,031 $104,750price paid Lot 1936 Diamond bracelet ×1.0 high estimate Estimate USD 64k – 102k USD 104,750 $100,721price paid Lot 1950 Exclusive ruby and diamond bracelet ×1.0 high estimate Estimate USD 64k – 102k USD 100,721 $19,803per carat Lot 1815 Mikimoto diamond necklace 4.72 ct · VS1 ×1.2 high estimate Estimate USD 51k – 77k USD 93,469$19,803 per carat $80,577price paid Lot 1938 Diamond ring ×0.8 high estimate Estimate USD 64k – 102k USD 80,577 $36,626per carat Lot 1875 Tourmaline and diamond ring 2.20 ct · Brazil · Heated ×1.1 high estimate Estimate USD 51k – 77k USD 80,577$36,626 per carat $25,419per carat Lot 1925 Diamond ring 3.17 ct · D colour · VVS2 ×1.1 high estimate Estimate USD 51k – 77k USD 80,577$25,419 per carat $77,354price paid Lot 1975 Pair of jadeite saddle rings ×0.9 high estimate Estimate USD 61k – 87k USD 77,354 $77,354price paid Lot 1944 Artistic diamond ear hoop ×1.0 high estimate Estimate USD 49k – 74k USD 77,354 $72,519price paid Lot 1977 Pair of jadeite bangles ×1.0 high estimate Estimate USD 49k – 74k USD 72,519 $18,801per carat Lot 1845 Diamond ring 3.60 ct · D colour ×0.8 high estimate Estimate USD 61k – 83k USD 67,685$18,801 per carat $64,462price paid Lot 1931 Jadeite and diamond brooch ×1.3 high estimate Estimate USD 36k – 49k USD 64,462 $56,404price paid Lot 1926 Diamond necklace ×0.9 high estimate Estimate USD 38k – 64k USD 56,404 $54,792price paid Lot 1840 Set of jadeite and diamond jewellery ×0.9 high estimate Estimate USD 38k – 64k USD 54,792 $51,569price paid Lot 1858 No reserve - ruby and diamond ear clips ×2.2 high estimate Estimate USD 15k – 23k USD 51,569 $48,346price paid Lot 1927 Diamond bangle ×0.8 high estimate Estimate USD 38k – 64k USD 48,346 $11,140per carat Lot 1934 Diamond pendent necklace 4.34 ct · I colour · VS2 ×1.3 high estimate Estimate USD 26k – 38k USD 48,346$11,140 per carat $41,900price paid Lot 1896 Jadeite and diamond ring ×1.3 high estimate Estimate USD 20k – 32k USD 41,900 $41,900price paid Lot 1836 No reserve - jadeite and diamond earrings ×4.1 high estimate Estimate USD 6k – 10k USD 41,900 $33,842price paid Lot 1909 Multi-gem clutch, lighter and cigarette holder ×0.9 high estimate Estimate USD 23k – 36k USD 33,842 $32,231price paid Lot 1809 No reserve - diamond and coloured diamond bracelet ×1.0 high estimate Estimate USD 20k – 32k USD 32,231 $15,009per carat Lot 1808 Diamond ring 2.04 ct · D colour · VS1 ×1.3 high estimate Estimate USD 15k – 23k USD 30,619$15,009 per carat $29,008price paid Lot 1907 Louis vuitton 'Tambour spin time' diamond and ruby wristwatch ×0.8 high estimate Estimate USD 26k – 38k USD 29,008 $29,008price paid Lot 1827 Diamond bracelet ×0.8 high estimate Estimate USD 23k – 36k USD 29,008 $29,008price paid Lot 1921 No reserve - boghossían 'Merveilles icicle' diamond earrings ×4.5 high estimate Estimate USD 4k – 6k USD 29,008 $24,173price paid Lot 1894 No reserve - jadeite and diamond ring and brooch ×1.6 high estimate Estimate USD 10k – 15k USD 24,173 $22,562price paid Lot 1832 No reserve - jadeite and diamond ring ×1.5 high estimate Estimate USD 10k – 15k USD 22,562 $22,562price paid Lot 1895 No reserve - jadeite and diamond ring ×1.5 high estimate Estimate USD 10k – 15k USD 22,562 $20,950price paid Lot 1839 No reserve - jadeite and diamond pendant and pendant/brooch ×0.9 high estimate Estimate USD 15k – 23k USD 20,950 $20,950price paid Lot 1915 No reserve - diamond bracelet ×1.4 high estimate Estimate USD 10k – 15k USD 20,950 $20,950price paid Lot 1828 Diamond brooch ×3.3 high estimate Estimate USD 4k – 6k USD 20,950 $17,727price paid Lot 1830 Jadeite and diamond brooch ×2.8 high estimate Estimate USD 4k – 6k USD 17,727 $17,727price paid Lot 1834 Jadeite, diamond and coloured diamond brooch ×2.8 high estimate Estimate USD 4k – 6k USD 17,727 $16,115price paid Lot 1837 No reserve - set of jadeite and diamond jewellery ×1.6 high estimate Estimate USD 6k – 10k USD 16,115 $16,115price paid Lot 1829 No reserve - set of jadeite and diamond jewellery ×2.1 high estimate Estimate USD 5k – 8k USD 16,115 $16,115price paid Lot 1806 No reserve - gold belt ×15.8 high estimate Estimate USD 767 – 1k USD 16,115 $15,310price paid Lot 1912 No reserve - emerald and diamond necklace ×1.0 high estimate Estimate USD 10k – 15k USD 15,310 $15,310price paid Lot 1826 Diamond brooch ×2.4 high estimate Estimate USD 4k – 6k USD 15,310 $14,504price paid Lot 1910 No reserve - de beers diamond pendent necklace ×0.9 high estimate Estimate USD 10k – 15k USD 14,504 $14,504price paid Lot 1831 No reserve - jadeite and diamond ring ×1.2 high estimate Estimate USD 8k – 12k USD 14,504 $12,087price paid Lot 1835 No reserve - jadeite and diamond earrings ×1.9 high estimate Estimate USD 4k – 6k USD 12,087 $11,281price paid Lot 1898 No reserve - two jadeite and diamond pendent necklaces ×1.6 high estimate Estimate USD 4k – 7k USD 11,281 $10,475price paid Lot 1838 No reserve - jadeite and diamond ring ×1.0 high estimate Estimate USD 8k – 10k USD 10,475 $8,863price paid Lot 1918 No reserve - diamond earrings ×2.3 high estimate Estimate USD 3k – 4k USD 8,863 $8,058price paid Lot 1817 No reserve - opal and diamond ring ×0.8 high estimate Estimate USD 6k – 10k USD 8,058 $7,735price paid Lot 1899 No reserve - two jadeite and diamond pendent necklaces ×1.2 high estimate Estimate USD 4k – 6k USD 7,735 $6,768price paid Lot 1911 No reserve - coloured diamond and diamond earrings ×1.8 high estimate Estimate USD 3k – 4k USD 6,768 $6,768price paid Lot 1833 No reserve - group of jadeite and diamond jewellery ×4.4 high estimate Estimate USD 1k – 2k USD 6,768 $4,512price paid Lot 1906 No reserve - meyers multi-gem 'Lady diamond' chronograph wristwatch ×2.4 high estimate Estimate USD 1k – 2k USD 4,512 $3,545price paid Lot 1897 No reserve - jadeite and gold pendent necklace ×1.1 high estimate Estimate USD 2k – 3k USD 3,545 Lot 1905 Superb jadeite bangle Estimate USD 3.20m – 4.48m Not sold Lot 1982 Magnificent jadeite carving Estimate USD 1.15m – 1.66m Not sold Lot 1980 Pair of jadeite bangles Estimate USD 358k – 486k Not sold Lot 1901 Set of jadeite and diamond jewellery Estimate USD 281k – 409k Not sold Lot 1891 Coloured diamond and diamond ring Estimate USD 192k – 320k Not sold Lot 1883 Rare alexandrite and diamond ring Estimate USD 153k – 230k Not sold Lot 1976 Pair of jadeite saddle rings Estimate USD 153k – 230k Not sold Lot 1841 Jadeite bead necklace Estimate USD 102k – 153k Not sold Lot 1846 Diamond ring 5.03 ct · E colour · VS1 Estimate USD 102k – 153k Not sold Lot 1842 Jadeite carving Estimate USD 15k – 23k Not sold