GOLD CENTER / DIAMOND EDUCATION
Knowledge makes brilliance personal.
Understand the details that shape a diamond’s appearance. Our guide is designed to make your next conversation more informed, not more complicated.
What is a laboratory-grown diamond?
A laboratory-grown diamond is crystalline carbon in the diamond structure, created in a controlled environment rather than through geological formation. It is not cubic zirconia or moissanite. Origin disclosure remains essential.
CVD: chemical vapor deposition
A carbon-containing gas is introduced into a low-pressure chamber. Energy activates the gas, enabling carbon to deposit on a diamond seed and grow layer by layer. Some stones undergo subsequent treatment to improve color.
HPHT: high pressure, high temperature
HPHT growth uses high pressure and temperature, generally with a metallic solvent-catalyst, to crystallize carbon on a diamond seed. HPHT can also refer to a treatment; ask about both growth method and treatments.
Laboratory-grown and natural
Both are diamonds, but their origins, growth features and market values differ. Laboratory-grown stones must not be described as natural or mined. Neither origin alone establishes quality, investment value or environmental impact.
The 4Cs
Cut describes how facets and proportions influence light performance. Color assesses body color under controlled conditions. Clarity considers internal and external features. Carat is weight: one metric carat equals 0.2 grams, not a fixed visual size.
Shapes and proportions
Round brilliant, oval, emerald, cushion, pear and marquise shapes offer different expressions. Length-to-width ratio, depth, table, symmetry and setting all influence appearance. A cut grade is not necessarily issued for every shape.
Grading and certification
A gemological grading report records observations for a particular stone. It is not a universal guarantee or a valuation. Check the issuing laboratory, report number, origin disclosure and any recorded treatments. No blanket certification claim is made here.
Choosing an engagement ring
Balance everyday wear, setting height, stone shape and ring size with your budget. Ask whether a quoted carat weight refers to the center stone or the total of all stones. Obtain the full specification before approval.
Why choose laboratory-grown?
Customers may appreciate the choice of sizes and designs available within their budget. Environmental and labor claims require supplier-specific evidence: laboratory-grown does not automatically mean sustainable, carbon-neutral or conflict-free.
Care and maintenance
Diamonds resist scratching but can chip under impact. Protect settings from knocks, avoid harsh chemicals and have loose stones or damaged clasps assessed before wearing the piece again.