How much is proper price of a diamond? It is proved difficult to measure. Diamond is a mineral that is chemically a crystalline form, or allotrope, of carbon. Famous diamond because it has physical properties very special, especially the hardness factor and its ability to disperse light. These qualities that make diamonds are used as jewelry such as blue diamond rings and a variety of applications in the industrial world. Diamonds mined mainly in central and southern Africa, although significant diamond content has also been found in Canada, Russia, Brazil, and Australia. Approximately 130 million “carat” (26,000 kg) of diamonds mined each year, which amounted to approximately $ 9 billion U.S. dollars.

Diamonds are the hardest material, where violence is defined as the resistance to friction and is ranked in the value of 1 to 10 (hardest) using the Mohs scale. Diamond has a hardness of 10 in this scale. Synthetic diamond hardness depends on the purity and perfection of the crystal structure. Nanocrystalline diamond produced by CVD can have a hardness level of between 30 to 75 percent of real diamonds, and the level of violence can be set with specific applications. Several synthetic single crystal diamond and nanocrystalline diamond HPHT can have a hardness level exceeds the natural diamond.

Diamonds are very hard, chemically inert, and have a high thermal conductivity low coefficient of thermal expansion. This property makes diamond an excellent material to be used as material for the optics to transmit infrared and microwave radiation. After the known properties of diamond, synthetic diamonds began to replace the zinc selenide as an optical material in the [[CO2 laser]] and gyrotron. The synthetic diamond shaped large-diameter discs (about 10 cm for the gyrotron) with a very thin thickness (to reduce the absorption of light and energy) and can only be produced by CVD techniques. The recent discovery of HPHT and CVD synthesis techniques improve the purity and perfection of the crystallographic structure of single crystalline diamond which is enough to replace silicon as optical material in the high-energy sources such as synchrotron radiation.

Diamonds sparkle is always cause admiration. The process of mining, processing, cutting through the complex, make it have exorbitant prices. Not surprisingly, many people make the diamonds to decorate themselves while lifting the prestige, such as the following seven diamonds. Because of beauty and rarity, here are seven on the list of the world’s most expensive colored diamonds.

1. Pumpkin Diamond (U.S. $ 3 million or Rp27 billion).

2. Flawless Blue Diamond (U.S. $ 9.5 million or USD 85.9 billion)

3. Sun-Drop Diamond (U.S. $ 10.9 million, or Rp95 billion)

4. Wittelsbach diamond-Graff (U.S. $ 24.3 million or Rp220 billion)

5. Diamonds Graff Pink (U.S. $ 46 million or Rp416 billion)

6. Hope Diamond (U.S. $ 250 million or Rp2, 2 trillion)

7. Diamond Spirit of de Grisogono (value unknown)

When you have a baby, that’s a happy time for parents in particular, or you want to give a present for his sister and nephew who you love, would you like to give the best and that makes this little one protected and comfortable, give him a jacket for the little one to be protected of cold air to warm the body and a safe and comfortable to the skin that little fellow, and his body because the skin is very vulnerable and sensitive by disease and bacteria. Therefore choose a baby jacket material is safe, and smooth for baby’s skin, and which can warm little body, give the best for your baby. Kids jackets can indeed make a little more cheerful, as good parents we need to know the tastes of children. Children are basically like the bright colors and cheerful motifs, particularly motif of their favorite cartoon characters. So, if you want to reward your child with a smile that kept spreading across his face, then buy a jacket that suits their preferences. In addition you must also consider the motives in terms of comfort the child, namely in terms of material selection. The materials used to make the jacket material that children should be comfortable, not hot, and can absorb sweat, so, whatever your children as active move, they will still feel comfortable.