Segmentation by Types classifies CVD lab‑grown rough diamonds according to intrinsic attributes that determine downstream processing and pricing. The first dimension, Carat Weight, is split into sub‑ranges: <0.5 ct (high‑volume, low‑margin), 0.5–1 ct (core market), and >1 ct (premium segment), each contributing proportionally to volume and value generation. The second dimension, Color Grade, includes D‑F (colorless), G‑J (near‑colorless), and K‑M (faintly tinted) categories; colorless stones command the highest price premium, while faintly tinted stones expand the accessible market for cost‑sensitive buyers. The third dimension, Clarity Grade, comprises IF (internally flawless), VVS (very, very slightly included), VS (very slightly included), and SI (slightly included) sub‑types; higher clarity correlates with lower defect rates in cutting, influencing overall profitability. By quantifying the share of each subtype within the total production mix, analysts can forecast shifts in supply chain dynamics, assess margin differentials, and evaluate the impact of technological advancements on market growth.