Opal is an opal in mineralogy, a gemstone with a color-changing effect, and an aqueous amorphous silica. The chemical composition is SiO2·nH2O, and the water content is generally 3%-10%. Amorphous body. The interior has a spheroidal structure, and the aggregates are mostly grape-shaped and stalactite-like. The background color is black, milky white, light yellow, orange and so on. Translucent to slightly transparent. Glass luster, pearl luster, protein luster. With a color change effect. The refractive index is 1.37-1.47, no birefringence, and the dispersion is very weak. The hardness is 5.5-6.5 and the density is 2.15-2.23 g/cm3. Sexually brittle, easy to dry, shell-like fracture. Different types of opal emit different colors of fluorescence under long-wave ultraviolet radiation. Opal, the appearance is bright and splendid, and its beautiful and charming color is amazing. It has a flame ruby, emerald and purple bright purple crystal emerald green, ruby set of bright, amethyst and emerald charming luxury in one. In Europe, Opal is a lucky representative. The ancient Romans called it the son of "Cupid". It is a beautiful angel in love and is considered a symbol of hope and purity. According to Pliny, the Norni veteran was rather exiled, and he was not willing to give his opal to Anthony (the ancient Roman leader of 83-30 BC) who longed for this gem. The Orientals regard it as a sacred gem that symbolizes loyalty. Most Americans like red and orange opal. Japanese people generally love blue and green opal. The Chinese people are fond of the festive red tones of warm colors. The international gemstone industry listed Opal as the "October Birthstone", a stone of hope and happiness. Smithsonian College of the United States treasures the world's largest precious opal, weighing 355.19 carats. Idomuk Opal weighed 205 carats. In 1954, the Australian government put it on a necklace and gave it to the Queen of England. Brass Screw in Handle is available for easy installation and removal
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ITEM
Gear Ratio
Ball Bearing
Line Capacity(mm/m;Lbs/yds)-Standard
KMA1000
5.2:1
1BB-7BB/2+1BB-9+1BB
0.20/310 0.25/200 0.30/140; 6/340 8/220 10/150
KMA2000
5.2:1
1BB-7BB/2+1BB-9+1BB
0.20/390 0.25/250 0.30/170; 6/420 8/270 10/185
KMA3000
5.2:1
1BB-7BB/2+1BB-9+1BB
0.30/250 0.35/200 0.40/110; 8/270 10/185 12/120
KMA4000
5.2:1
1BB-7BB/2+1BB-9+1BB
0.35/180 0.40/140 0.45/110; 10/200 12/145 15/115
KMA5000
5.2:1
1BB-7BB/2+1BB-9+1BB
0.35/310 0.40/240 0.45/190; 10/340 12/260 15/207
KMA6000
5.2:1
1BB-7BB/2+1BB-9+1BB
0.35/350 0.40/270 0.45/210; 11/380 13/295 15/230
Gear Ratio
5.2:1
Bearings
1BB--7BB
Bearings
2+1
9+1
Opal's chemical knowledge
Opal's English name is pal, which is derived from the Latin Opalus, meaning "the beauty of the gemstone ", or from the Sanskrit Upala, meaning "precious gem". The word "Opo" in China is based on English transliteration.