보석 뉴스

925 gold price per gram Baolong Sharing: Tourmaline

게시 ~에 의해 Kingjy

The mineral tourmaline is called “전기석” by the Chinese and “multicolor stone” by the Westerners. It is a very popular gemstone.

In ancient times, residents along the Mediterranean coast already knew about this magical gem. ~ 안에 1703, the Dutch introduced tourmaline from Sri Lanka to Europe.

According to legend, on a very hot summer day in the 18th century, in a place in the Netherlands, a few children were taking the stones brought back by voyagers. They found that the two ends of these stones could be “charged” and attract or Repel light objects like dust, grass clippings, 등. 그러므로, later people also called tourmaline as “ash-absorbing stone”.

The chemical composition of tourmaline is complex, so far no synthetic products have been available.

The main producing areas of tourmaline include Brazil, Afghanistan, 호주, 미얀마, 인도, 마다가스카르, Mozambique, Namibia, Pakistan, 러시아 제국, 스리랑카, Tanzania and the United States.

The main types are: Achroite, which is very rare. The refractive index is 1.62～1.64, the birefringence index is 0.018, and the dichroism is not obvious and.

Red tourmaline (Rabellite) is pink to red, sometimes purplish red, among which red tourmaline is the most valuable. 굴절률은입니다 1.62 에게 1.64, the birefringence index is 0.018, and the dichroism is clear.

Blue Tourmaline (Indicolite) Blue or dark blue, if the color is too dark, heat treatment can be used to make it lighter. 굴절률은입니다 1.62-1.64, the birefringence index is 0.018, and the dichroism is strong.

Multicolor tourmaline (Watermelon) crystals, if viewed from a cross section, have a slightly triangular shape, with pink in the center and green at the edges. The pink “flesh” with green “skin” is like the cut and polished surface of a watermelon, so it is called “watermelon tourmaline”.

Green tourmaline (Verdelite) 또한 호출됩니다 “green stone”. Some experts classify tourmaline crystals according to their chemical composition and origin, such as lithium tourmaline (Elbaite), iron tourmaline (Schorl), manganese tourmaline (Tsilaisite), magnesia tourmaline (Uvite), calcium tourmaline (Liddiocoatite) 등.

Other gemstones that are easily confused with tourmaline include amethyst, andalusite, rutile, stone, green spodumene, purple spodumene, pink beryl (Morganite), olivine, 루비, 에메랄드, 황옥, talisman Mountain stone, zircon and glass imitation products, 등.

 

OEM/ODM 보석 제조업체 디자인 사용자 정의 보석

시작합시다 : mo@kingjy.com

 

광저우 징징 맞춤형 도매 반지 목걸이에 중점 925 보석류,스털링 실버 골드는 18K로 도금되었습니다,14케이,24K 옐로우 골드,화이트 골드와 로즈 골드.,고객의 요구 사항에 따라 레이저 조각으로 로고 브랜드 또는 기타 단어.

월별 생산 능력은 최대입니다 50,000 조각 팔찌 목걸이 귀걸이 링 보석.,보석 체인점,콘센트 상점,보석 도매기,트레이더 및 보석 브랜드 회사,Professional은 고품질의 맞춤형 보석 및 대량 생산을 제공합니다. 925 스털링 실버 보석 서비스.