Synthetic Yellow Diamond
Origin of the Yellow Color
The tone and saturation
of color gives our diamonds
their natural beauty
and range of color.
Generally speaking, the more nitrogen in a diamond, the more saturated the yellow color. If the diamond contains too much nitrogen it shows a yellowish brown color, which is common with industrial-quality diamonds. During growth, it is possible to capture the nitrogen in substances other than the diamond lattice, limiting the yellow color centers. These substances are called 'getters' and allow better control over the resulting diamond color. By limiting the amount of nitrogen in the growth cell, and capturing the excess with getters, we are able to produce desirable gem-quality colors.
Many lab diamonds are available with an orange or yellow-orange color. This color is the result of a now outdated technology due to a type of a specific metal solvent used, and limited control over the diamond growth. The diamond is grown in a molten metal solution composed of various solvents necessary to create proper growth conditions. The orange color comes from solvents being trapped in the diamond lattice, along with the nitrogen, creating orange or orange-yellow color centers, depending on the concentrations.
While we still have some in-stock, we are not actively producing diamonds with an orange modifying color.
Typical canary yellow color.
Nitrogen helps the diamond to grow quicker than without. One machine cycle for a yellow diamond typically runs five to six days and will create one rough that could be cut into a one to two carat diamond.
Lab-grown yellow diamonds
cost about 1/4th the price
of their mined counterparts.
Mined yellow diamonds are most commonly available in the pale yellow colors and normally sell between $10,000 and $50,000 for a one carat.
Rough yellow diamond grows in a truncated octahedral shape. This rough shape has the highest yield when cut into square shapes such as radiant, princess, cushion, emerald and asscher. Because of the larger sizes possible and demand, rounds are commonly available. Elongated shapes such as marquise and pear typically have low yields since the size is determined by the longest dimension of the squarish rough. For this reason, elongated shapes are not normally made.
All synthetic yellow and orange diamonds are type Ib.