Recently, the National Jewelry Quality Supervision and Inspection Center (NGTC) Hong Kong Laboratory, Beijing Laboratory, Shenyang Laboratory, NGTC Beijing Jewelry Research Institute, and GOLDWAY TECHNOLOGY LTD. (GW), together to De Beers (DE BEER'S) synthetic diamond jewelry "LIGHTBOX JEWELRY" samples were subjected to detailed gemological properties testing and data collection and finishing work.
LIGHTBOX JEWELRY is a synthetic diamond jewelry brand launched by DE BEER's in 2018. The brand officially released its first collection in September 2018, including three synthetic diamonds – pink and blue. Color, colorless. The impact of LIGHTBOX JEWELRY synthetic drilling in the market is not yet known. NGTC will pay close attention to actively carry out frontier research on industry dynamics and use science and technology services to protect industry and consumer safety.
sample discription
The NGTC diamond research team collected 4 sets of LIGHTBOX JEWELRY synthetic drill samples (as shown in Figure 1). The sample main stone size is about 0.25CT-0.50CT, and the colors are orange pink, pink, colorless, blue, and the clarity reference. Natural diamond grading standards can reach the VVS level.
Four sets of LIGHTBOX JEWELRY samples collected by NGTC. The size of the four sets of main stones is about 0.25CT-0.50CT, and the colors are orange-pink (SD-1), pink (SD-2), and colorless (SD-3). Blue (SD-4), the clarity of the natural diamond grading standard can reach the VVS level.
Microscopic magnification observation
The magnified sample shows that there are two laser marks on the main stone, as shown in Figure 2. One is located on the waist and engraved with the words "LIGHTBOX LABGROWN". The other is under the countertop, the LIGHTBOX logo, which is easily identifiable under the microscope but not visible to the naked eye. The GW experts learned through microscopy that the LIGHTBOX logo was engraved at a depth of about 200 microns under the countertop.
Microscopically enlarged photo of the laser marking of the LIGHTBOX JEWELRY sample located on the waist (left) and under the table (right)
Spectroscopy and luminescence test results
NGTC carried out detailed spectroscopic and luminescence tests on the main stone and the stone of the four sets of samples, including infrared spectrum, ultraviolet spectrum, photoluminescence spectrum, and DIAMOND VIEWTM luminescence image observation. The test results show that the main stone of LIGHTBOX JEWELRY is chemical vapor deposition (CVD) synthetic diamond, the stone is high temperature and high pressure (HPHT) synthetic diamond, and after the synthesis has undergone one or more treatment methods, and finally obtained the existing s color.
Solar Street Light,Led Street Light,Led Street Garden Lamp,High Power Led Street Light
JIANGMEN MOSCOT OPTOELECTRONIC TECHNOLOGY CO.,LTD. , https://www.zjsensorsled.com