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Jewellery Care

Tuesday, June 23, 2015 3:07:44 PM Asia/Calcutta


Jewellery CareCare for Jewellery at home
While the proper selection of jewellery is important, even more important is its care, which alone can preserve its beauty and ensure its long life. Thankfully, caring for your jewellery is no longer tedious. You can now clean your jewellery right at home with no weight loss of the jewellery or damage to your hands.

Know your jewellery
Keep gold and gems glittering. Jewellery loses it's glitter and beauty by the accumulation of dirt due to neglect. Skin oils, soap, cosmetics, cooking grease etc. Several precious stones, especially diamonds, have an affinity to grease and so must be cleaned once a month to keep them shining. While dressing up, jewellery should be worn last, so that it does not come in direct contact with cosmetics perfumes and oils. Resist the temptation to use a perfume spray just before leaving. The effect of these, especially on organic gems like pearls and corals, can be very damaging. They must therefore; be wiped clean before they are put away after use.

Easy care of jewellery
Threaded jewellery of pearls and corals can be cleaned with soft and damp cloth. Most jewellery can be washed clean in plain water. One can use mild detergent or soap to clean stubborn dirt. A clean diamond reflects light better than one that's been dulled by skin oil, dirt and cooking greases. Diamond jewellery can be boiled in soap water for about 2 to 5 minutes and then washed in clean water with a soft toothbrush.

Now a days, specialised cleaning liquids from Holland based company 'Hagerty' are available in the market. Like 'Jewel Clean' for diamonds and gold jewellery, 'Pearl Clean' for pearls are available.

A Warning: Closed set jewellery or Madras styled setting where the stones are set with a closed back should only be wiped or brushed clean. It should never be immersed in liquids for the liquid can percolate into the setting through microscopic pores and dull the appearance of the stones.

Store Properly
Jewellery should be stored in suitable cases in such a manner that; no two pieces rub against one another because friction causes tiny scratches which dull the polish of the metal. Also the stones might loose it's setting. A diamond, though the hardest substance known to man, can be chipped by a hard blow.
0 Comments | Posted in jewellery By Lagubandhu

Semi-Precious Gemstones

Tuesday, June 23, 2015 3:06:38 PM Asia/Calcutta


A purple coloured stone from Quartz family and thus not very costly.


This pale blue stone looks like sea water, hence the name. Comes from 'Beryl' family.


This is a yellow-to-golden member of the quartz mineral group. A deep golden variety from Madiera Spain can resemble the costly imperial topaz gem stone.


It is fluorine aluminium silicate and comes in yellow, yellow-brown, honey-yellow, flax, brown, green, blue, light blue, red and pink ... and sometimes it has no colour at all. The most common among them are Blue Topaz and Yellow Topaz.


A white gemstone with iridescent rainbow flashes, however, it does also come in different kinds such as fire opal which is red/orange combination. The precious opal has a rainbow iridescence, which changes with the angle of observation.


This olive green stone is used by August-born.


Lapis LazuliLapis Lazuli
This Blue opaque stone comes from Copper ore mine. It contains gold particles.


This is really hardened rubber. When rubber trees got buried due to lava flows, they came under high pressure forming hard stones. Thus many times fossils are found trapped inside them.


This is also called kidney stones and is supposed to cure kidney diseases. It has bands of shades of green in concentric pattern.


Another opaque blue stone. Comes from Persia and is considered very holy by the Tibetans.

0 Comments | Posted in jewellery By Lagubandhu

Gemstones (Navagrahas)

Tuesday, June 23, 2015 3:04:54 PM Asia/Calcutta


The gem of all gems, is in fact nothing but absolutely pure crystalline carbon. Hardness is its forte. This gives it the ability to reflect maximum amount of light and thus maximum brilliance, when perfectly cut. There are four 'C's of a diamond which determine it's value. 
  • Cut: The better a diamond is cut, the greater will be its brilliance and sparkle.
  • Colour: The closed a diamond is to colourlessness, the greater is its value.
  • Clarity: Flawless or cleaner the diamond, the greater is it's value.
  • Carat: A diamond is weighed in 'carat'. A carat equals 200mg in standard metric system. Each carat is further divided into 100 points.


Emeralds come from the family called Beryl. Stones like Aquamarine, Morganite are also from the same family. Emeralds can be found in shades of light to very dark green. Emerald being comparatively soft, it is very rarely found to be free of inclusions or defects. Many a times, better quality or transparency makes the stone look light in colour. Very fine lustre as well as dark colour is rare. It is found mainly in Columbia, Brazil, Zambia, and Zimbabwe.


Ruby and Emerald are the most popular gemstones after Diamond and fall in the next price level as well. The pigeon blood red is supposed to be the best colour for the ruby. But shades from Pink (Sri Lanka) to dark red (Thailand) are also found. More the transparency, better the quality. Best variety comes from Burma. Tanzania and Kenya also produce good rubies. Spienel, an another gemstone, looks very similar to ruby and has physical properties very near to it and is also found in the same mines. Rubies found in India are not of very fine quality and come very cheap.


Yellow SapphireYellow Sapphire
The most popular gemstone in India. Generally mistaken with Topaz or Citrine and also the yellow coloured American Diamond (Cubic Zirconia). The Blue Sapphire and Ruby along with the Yellow Sapphire form the Corundum family. They have the same basic crystalline systems. Different pigmenting elements give various colours and hence the names. E.g. iron causes yellow colour, chrome causes red (ruby) and combination of iron and titanium gives blue colour. Best varieties are found in Srilanka and Thailand.


Blue SapphireBlue Sapphire
Generally the term 'Sapphire' refers to blue sapphire. This stone is not as popular in India as in Europe and America; where it is set along with diamonds and looks very beautiful. Best varieties are found in Sri Lanka, Burma, Thailand and Australia. Many other blue coloured gemstones like Blue Topaz, Iolite; Spinel, Tanzanite, Tourmaline, Zircon look similar and are used as substitutes.


Like Pearls, Coral is also a sea –product. It also consists of calcium carbonate. Often we hear about coral reefs near shallow sea- fronts. The tree like branches of coral are calcified skeleton remains of sea creatures, called polyps. Corals of deep red colour are most valuable. But one can find shades ranging from pure white to black. Various shapes are carved out of good quality corals.


Gomed (Hessonite Garnet)Gomed (Hessonite Garnet)
This stone is a part of the garnet family. This stone is found in Sri Lanka and Orissa. The reddish brown colour like the ‘Gomutra’ (cow urine) gives it it’s popular named Gomed.


Cat's EyeCat's Eye
Cat's eye effect is an optical effect which looks like a cat's eyeball. This is caused by inclusions arranged in a parallel manner. Thus, more transparent variety will show the less of the effect. The basic is called Chrysoberyl. Other natural stones like Appetite, Moonstone, Tourmaline etc. also show cat?s eye effect. The best variety comes from Kerala and Orissa.


Pearl is an organic product consisting of calcium carbonate. A seashell produces pearls by depositing layers around a nucleus. There are three basic types of pearls,
  • Basara / Venezuela Pearls: This is genuine seawater pearl which is generally shapeless. It is the most durable variety.
  • Cultured Pearls (Mikimoto Pearl): It is same in nature as Basara Pearl. Only it is produced under controlled conditions, to get perfectly spherical shape. The process of culturing was developed by Mr. Mikimoto of Japan and even today cultured pearls are known as Mikimoto Pearls.
  • South Sea Pearls: This is a variety of cultured pearl having sizes necessarily larger than 10 mm. It comes from North coast of Australia.
  • Tahiti Pearls: This variety of big cultured pearls is produced in Tahiti, Islands in Pacific Ocean. Black & Grey colour is its speciality.
  • Mabe Pearl: these are composite half round pearls having an attached base made of pearls shell.
  • Fresh water Pearls: These pearls are produced in fresh water (mainly in china) and these pearls have largest wholesale market in Hyderabad. These are rice like or flattened or totally shapeless. But due to lack of hardness they ware out very fast and lost lustre.
  • Czeco, Tissue, Semi–cultured: These are all imitations of pearls made from synthetic material coated with ‘Pearl Paint’.
0 Comments | Posted in jewellery By Lagubandhu

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