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Jadeite off-cuts

Jadeite off-cuts

  • Place of origin:

    Burma (made)

  • Date:

    1950-1999 (made)

  • Materials and Techniques:

    Lavender jadeite jade, sawn using a mechanically driven, diamond impregnated blade.

  • Credit Line:

    Gift from Mr. E. Allan Jobbins

  • Museum number:

    NOT REGISTERED.41:2

  • Gallery location:

    In Storage

In China a wide variety of translucent to opaque, green stones are generically referred to as "jade", however there are only two minerals - nephrite and jadeite - that are officially accepted as such and they can occur in many colours other than green. Both are hard and durable materials that have been used to carve both decorative and functional objects. Being different minerals, they have differing chemical compositions and structures, with nephrite jade generally being composed of interlocking fibrous crystals and jadeite jade generally being composed of interlocking, more granular crystals. However, they can sometimes be very similar in appearance which then require testing to separate. In their finest qualities, jadeite jade is the more highly valued.
The dull green varieties of both nephrite and jadeite owe most of the colour to the presence of iron impurities but the bright emerald green, translucent variety of jadeite is coloured by chromium and is known as "Imperial Jade". Imperial Jade is the most highly prized of all jade and is especially treasured by the Chinese.

Physical description

Five sawn pieces of lavender jadeite jade, four being flat and rectangular with the fifth being flat and triangular. Three of the pieces have a single, partially polished face, with all other faces being unpolished.

Place of Origin

Burma (made)

Date

1950-1999 (made)

Materials and Techniques

Lavender jadeite jade, sawn using a mechanically driven, diamond impregnated blade.

Dimensions

Length: 31.5 mm Triangular piece, Thickness: 6.9 to 8.0 mm Triangular piece, Weight: 18.5 ct Triangular piece, Length: 38.2 mm Elongated rectangular piece, Width: 7.3 mm Elongated rectangular piece, Thickness: 2.7 mm Elongated rectangular piece, Weight: 12.5 ct Elongated rectangular piece, Length: 15.9 mm Short rectangular piece, Width: 8.9 mm Short rectangular piece, Thickness: 5.3 mm Short rectangular piece, Weight: 11.5 ct Short rectangular piece, Length: 21.15 mm Short, narrow, rectangular piece, Width: 6.5 mm Short, narrow, rectangular piece, Thickness: 3.65 mm Short, narrow, rectangular piece, Weight: 8.5 ct Short, narrow, rectangular piece, Length: 20.6 mm Slightly wedge-shaped, rectangular piece, Thickness: 3.5 mm Slightly wedge-shaped, rectangular piece, Weight: 6.5 ct Slightly wedge-shaped, rectangular piece

Object history note

Donated by Mr. E. A. Jobbins. Accompanying the pieces is a rectangular label with "Examples of Burmese jade. Unregistered gift from Mr. JOBBINS." in blue ink.

Descriptive line

Jadeite jade, lavender, five sawn off-cuts from the cutting process, unpolished, in a bag, Burma, 20th century

Materials

Jadeite

Categories

Gemstones; Hardstone

Collection

South & South East Asia Collection

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