Abstract in simplified Chinese:本文所揭示之实施例系关于使用谐振超音波光谱术之技术检查包含经切割/抛光及粗糙之钻石之宝石。谐振频率借由使用一扫掠正弦振荡器机械地引起石头振动、传感谐振及显示光谱以产生描述石头之一图案而获得。谐振特征可用于追踪一个别石头以验证其完整性或对一粗糙石头分级以确定潜在价值。
Abstract:
The embodiments disclosed herein relate to the examination of gemstones including diamonds, both cut/polished and rough, using the technology of Resonant Ultrasound Spectroscopy. The resonant frequencies are obtained by mechanically causing the stone to vibrate using a swept sine oscillator, sensing the resonance vibrations, and displaying the spectrum to yield a pattern describing the stone. The resonance fingerprints can be used to both track an individual stone to verify its integrity or to grade a rough stone to establish potential value.
Abstract:
The present invention comprises systems, apparatuses and methods for measuring and analyzing gem color in a way which reliably and consistently simulates visual color analysis methodology. The preferred system embodiment of the present invention comprises several aspects, including the use of daylight approximating lamps, such as daylight-approximating fluorescent tubes or halogen lamp boosted with a filter to approximate daylight, and a light detector which directs light of a specific angle such that the system approximates visual analysis methodology. In the case of diamond analysis, in one embodiment, the system of the invention includes three major elements: a daylight-approximating light source that illuminates the pavilion side of the diamond, a light detector which detects light coming out at a specific angle from the pavilion side of the diamond, and an optical measurement device which measures the light detected by the light detector. In a preferred embodiment of the system, the daylight-approximating light source illuminates the pavilion side of the diamond through a diffuser. In another preferred embodiment, the light detector detects light which is coming from a rotating diamond.
Abstract in simplified Chinese:一种分级钻石切割之系统利用许多外观量度来为影响切割品质之许多切割要素产生计分。此等切割要素包括亮度(brightness)、火光(fire)、闪光(scintillation)、超重、耐久性、磨光度及对称性。该切割分级系统使用一切割分级算法,该切割分级算法处理为该等切割要素所获得之个别计分来为钻石产生一总体切割等级。该计分方法及该切割分级算法经设计以仿真实际观测分级从而使得该总体切割等级表示钻石之切割品质的公正指示。在一可行之实施例中,该切割分级系统系完全自动化且由电脑实施的。