As a lady of the privy chamber, Radcliffe was in charge of the queen's jewelry from 1587, in succession to
Blanche Parry, and was usually described as "Mistress Mary Radcliffe." The jewel known as the "
Three Brethren" was placed in her keeping, among 628 jewels
inventoried by Parry. Radcliffe never married; she and Blanche Parry were the only gentlewomen attending Elizabeth I that shared the queen's famed virginity. Both Radcliffe and Blanche Parry were involved in making and maintaining headresses and veils for Elizabeth. In January 1570, Radcliffe was given black velvet and white satin to make "hoddes and habilliamentes", and in 1571, Radcliffe received fours of satin to line "crippens and habilliamentes". The word "biliment" was used for the strips of fabric at the front of a
French hood and also the jewelled gold decorations. Radcliffe made biliments for Queen Elizabeth's hoods from white satin. Radcliffe's name appears frequently in the lists of
New Year's Day gifts given to the queen, for taking receipt of jewels. On 29 June 1600 she took receipt of a jewel from Sir Thomas Egerton, which his late wife Elizabeth had borrowed. The piece was made of gold, and enamelled with five large diamonds and a pendant pearl. In July 1600 an inventory was made of the wardrobe and jewels of Queen Elizabeth. Radcliffe had custody of several suites of gold buttons, set with diamonds, rubies, or pearls, some called "true loves" or in "pea's cod" form or made like tortoises. There were several brooches or pendants, one with hands holding a sword and trowel or spade, an emblem for peace. Radcliffe also kept a pair of sleeves and a stomacher of cloth of silver embroidered with pearls. Radcliffe was still responsible for these jewels in on 28 May 1603. On 13 May 1603 Radcliffe and
Lady Katherine Howard were asked to sort and place the old queen's jewels in orderly form at
Whitehall Palace. They were to examine the jewels "which are upon dressings", used on Elizabeth's head attires. On 20 May
Auditor Gofton and others were asked to examine the jewels and inventories in her custody, selecting those suitable to be retained as crown jewels. She was given a "discharge" or receipt for jewels formerly in her custody on 26 August. On 12 January 1604, the goldsmiths
John Spilman and
William Herrick were asked to assess and make an inventory of the jewels that had belonged to Queen Elizabeth.
King James had already given several pieces to
Anne of Denmark,
Princess Elizabeth,
Arbella Stuart and to ambassadors as gifts at Christmas. The remaining jewels were transferred from the keeping of Mrs Mary Radcliffe to the
Countess of Suffolk. Spilman and Herrick had already accepted Radcliffe's instructions to repair some jewels, presumably from the late queen's collection. These included; a branch of tree with a half moon, set with diamonds, "
ballas", rubies and pearls; a branch with an opal, an opal ring to be enamelled black; two gold bodkins; a gold feather jewel set with rubies, emeralds, and pearls; five gold buttons set with pearls; and a ring "enamelled in fashion like
crayfish" with a large diamond, to be enlarged for King James. ==Later life==