Lab Grown Blue Diamonds
Blue Cultured Diamond Introduction
Cultivation Methods
Blue cultured diamonds are mainly grown via HPHT and CVD. In the HPHT process, carbon sources are subjected to high temperature (around 1500°C) and high pressure (about 50,000 – 70,000 atm) to form crystals. The addition of boron atoms imparts the blue color. In CVD, carbon – rich gases like methane decompose in a vacuum chamber, with boron – containing gases added to grow blue – hued diamonds on substrates.
Color Grading
Blue diamonds are graded from Faint Blue (the palest, barely noticeable) to Very Light Blue, Light Blue, Fancy Light Blue, Fancy Blue (moderately saturated), Fancy Intense Blue (vivid and highly saturated), Fancy Deep Blue (deep and rich), and the rarest Fancy Vivid Blue (extremely bright and saturated).
Advantages
They are more affordable than natural blue diamonds, making blue diamond jewelry accessible to more consumers. Their production is environmentally friendly as it avoids large – scale mining. Moreover, the quality is controllable, ensuring high – clarity stones.
Application Scenarios
Blue cultured diamonds are popular in jewelry, used in rings, necklaces, etc., adding a unique touch. They also hold potential for collectors, especially high – grade ones. In industry, their hardness and optical properties make them suitable for some specialized applications like high – end optical component manufacturing.