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A set of brass sieves used by a pearl merchant (al-tawwash) to separate the various sizes of pearls.
20th century
Object Name: pearling seive
Period: 20th century
Date: 1900-1999
Provenance: India
Dimensions: a)2.75cmx7.55cm, weight:29.6g b)3.4cmx9.2cm, weight:44g c)3.6cmx9cm weight:34g d)3.7cmx9.25cm weight:46.8g e)3.3cmx9.69cm weight: 47g f)4cmx10.5cm weight:55.7g
Medium: copper alloy
Registration Number: a)QNM.2010.1.3.1 b) QNM.2010.1.3.2 c) QNM.2010.1.3.3 d) QNM.2010.1.3.4 e)QNM.2010.1.3.5 f)QNM.2010.1.3.6 g)QNM.2010.1.3.7
Place Of Discovery/Findspot:  Qatar
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A set of tasa used by a pearl merchant (al-tawwash) to separate the various sizes of pearls.
In order to start the negotiations with a buyer or a seller, the tawwash would scoop up a selected group of pearls and sift them through a series of sieves. In Qatar the most basic bishtakhta was commonly equipped with a series of seven different sized sieves (tasa), while a selling to a jeweler or more specialized buyer would include many more different sizes. a)Copper alloy, sheet metal sieve, with punched holes in bottom for sorting pearl sizes
was originally brass plated.19 Sieve holes, all 4.86mm in diameter.
b)Sieve hole size; 6.21 mm
c)Sieve hole size; 3.72 mm
d)Sieve hole size: 3.63 mm
e)Sieve hole size: 3.66 mm
f)sieve hole size is 6.12 mm
g)Sieve hole size: 6.06 mm
HISTORICAL CONTEXT QATAR
The Qatar Peninsula is surrounded by sea except in the south where it connects with its neighbours from the Arabian Peninsula. For hundreds of years people have shared the land, resources and knowledge inherited from their environment. With no fixed lifestyle in terms of time and place, people moved easily and freely between land and sea for trade, livestock, pearl diving, fishing, and hunting at various times throughout the year. This symbiotic relationship between the people and their environment was represented in the unity of their societies, including the exchange of knowledge, stories and the trading of available goods.

A distinctive characteristic of life on the Qatar Peninsula has long been the close association between the coast and the desert – al barr. Some desert tribes spent several months of the year in coastal cities, setting up semi-permanent residences to participate in pearl diving or fishing. Similarly, coastal residents occasionally moved to al barr during the winter to graze their livestock. This exchange of natural resources and the influence of different environments has contributed to the creation of a unique community.
HISTORICAL CONTEXT - REGION/GULF/WORLD
The presence of British, French and Dutch trading companies in the Gulf from the early 1600s brought uncertainty to the region, with unstable alliances and intense competition over trade routes. As trade flourished, however, the strength of the Arab tribes increased. Many Arab tribes moved from the interior of the Arabian Peninsula to Qatar, and by the 18th and 19th centuries, most of the major towns of the Gulf were founded. Several towns flourished on the Qatari coast, including Huwailah, Khor Hassan, Fuwairat, Ruwaida, Freiha, Al Bidda and Doha. The most notable was Al Zubara which became a hub for the Gulf pearl trade.
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