ما هو الماس الأمراض القلبية الوعائية? CVD (ترسيب الأبخرة الكيميائية) الماس. The mixture of carbon-containing gas and oxygen is excited and decomposed at high temperature and pressure below standard atmospheric pressure to form active diamond carbon atoms, which are deposited on the substrate and alternately grown into a polycrystalline diamond (or controlled deposition growth conditions to …
round brilliant diamonds shapeThe round shape is the most famous diamond cut as it accounts for nearly half of all polished diamonds. هذه واحدة من القطع الرائعة التي سميت بخصائصها الضوئية القوية. تم تطوير الصيغة النهائية لـ Round Brilliant بواسطة Marcel Tolkowsky in 1919: الكل 58 يتم قطع الجوانب بشكل متماثل, allowing …
Replicating what’s happening deep underground is difficult, time-consuming and expensive, but the end result is the same as what’s been mined for centuries. There are easier ways to do this, but only the process we use, replicating nature to rearrange atoms to grow beautiful diamonds as unique as fingerprints. We do this because we care …
What is diamond cut? Excellent cut diamonds have a uniform and clear pattern of light and dark areas and provide the highest level of fire and brilliance, as nearly all incoming light is reflected through the table. Very good cut diamonds are very similar to very good cut diamonds. They provide extraordinary brilliance and fire …
Specification of Lab Grown Diamond Code # Grade Carat Weight Clarity Size 04A A 0.2-0.4ct VVS VS 3.0-4.0mm 06A A 0.4-0.6ct VVS VS 4.0-4.5mm 08A A 0.6-0.8ct VVS-SI1 4.0-5.0mm 08B B 0.6-0.8ct SI1-SI2 4.0-5.0mm 08C C 0.6-0.8ct SI2-I1 4.0-5.0mm 08D D 0.6-0.8ct I1-I3 4.0-5.0mm 10A A 0.8-1.0ct VVS-SI1 4.5-5.5mm 10B B 0.8-1.0ct SI1-SI2 4.5-5.5mm 10C …
Also known as a diamond type 2a diamond, a Type IIa is one of four diamond classifications. Around 1-2% of all diamonds are classified as Type IIa (or 2a). These gems are purely, or almost purely carbon, and are considered to be the purest and most valuable of all. Type IIa diamonds have zero or …
