보석 뉴스

silver jewelry wholesalers What is the refractive index of colored gemstones?

게시 ~에 의해 Kingjy

The most romantic ring-Paris kiss

In gemology, the concept of “refractive index” is often mentioned, and in some places it is called “refractive index”. The refractive index is an important parameter reflecting the optical properties of gems.

When light propagates from one medium to another, reflection and refraction occur at the interface between the two media. The ratio of the sine of the incident angle and the sine of the refraction angle is a fixed value. The fixed value is the refractive index of the second medium relative to the first medium. If the first medium is vacuum (or air), the fixed value is the absolute refractive index of the second medium, which is generally referred to as the refractive index Both are absolute refractive index, which is the law of refraction.

The refractive index of the medium is related to its composition and structure. In treasure studies, the refractive index of gems has a relatively fixed value, which is an important parameter for determining gem species. When appraising gems, professionals often first measure the refractive index of the gems, and then combine other gemological characteristics to determine the species of gems.

일반적으로 말하면, a heterogeneous gemstone has a maximum refractive index and a minimum refractive index. The difference between the two is called the maximum birefringence; the homogeneous gemstone has only one refractive index.

The refractive index has a certain effect on the luster of a gem. 일반적으로 말하면, the greater the refractive index of a gem, the stronger its luster. 예를 들어, the luster of a diamond is diamond luster, indicating that its refractive index is very large. Rely on luster to select diamonds.

A radiometer is an instrument used to measure the refractive index of gems. When measuring the refractive index of a gemstone, it is generally required that the gemstone have at least a certain smooth facet or arc. For faceted gemstones, the refractive index and birefringence of the gemstone can be measured by faceting; for cambered gemstones, the approximate refractive index of the gemstone can be measured by spot measurement.

 

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.