什麼是 CVD 鑽石?
什麼是 CVD 鑽石? 化學氣相沉積 (化學氣相沉積) 鑽石. 含碳氣體與氧氣的混合物在低於標準大氣壓力的高溫高壓下激發分解，形成活性鑽石碳原子, 沉積在基底上並交替生長成多晶鑽石 (or controlled deposition growth conditions to …
A Guide to Round Cut Diamonds
round brilliant diamonds shapeThe round shape is the most famous diamond cut as it accounts for nearly half of all polished diamonds. This is one of the great cuts named for its strong light properties. The ultimate formula for Round Brilliant was developed by Marcel Tolkowsky in 1919: all 58 facets are symmetrically cut, allowing …
鑽石是如何生長的?
Replicating what’s happening deep underground is difficult, 費時費錢, but the end result is the same as what’s been mined for centuries. 有更簡單的方法可以做到這一點, 但只有我們使用的過程, 複製自然以重新排列原子以生長出像指紋一樣獨特的美麗鑽石. We do this because we care …
What is diamond cut?
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 …
VS VVS A 級高溫高壓實驗室製造鑽石
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 …
什麼是 IIa 型鑽石?
也稱為 2a 型鑽石, a IIa 型是四種鑽石分類之一. 大約 1-2% 的鑽石被歸類為 IIa 類 (或 2a). 這些寶石純粹, 或幾乎純碳, 並被認為是最純淨和最有價值的. Type IIa diamonds have zero or …