Akoya pearls are classic saltwater cultured pearls known for their exceptional luster and near-perfect round shape. They are produced by the Pinctada fucata martensii oyster, primarily in Japan, where pearl farming techniques were first perfected in the early 20th century. Akoya pearls are prized for their mirror-like shine, elegant symmetry, and refined appearance, making them a staple in fine jewelry.
- Color range: Classic white and cream with rose, silver, or ivory overtones; also available in soft champagne and light gold hues
- Sizes: Typically range from 4 mm to 9 mm, with the most common jewelry sizes between 6 mm and 8 mm
- Shapes: Primarily round and near-round; occasionally oval, baroque, or slightly off-round
- Origin: Japan and China, with traditional high-quality pearls historically associated with Japanese farms
- Hardness: 2.5 to 4.5 on Mohs scale
- Luster: Extremely high, mirror-like luster that reflects light sharply and evenly
- Surface quality: Often very smooth with minimal blemishes compared to many other pearl types
- Nacre thickness: Known for dense, well-formed nacre that contributes to their signature glow
- Material composition: Organic gemstone composed primarily of calcium carbonate (aragonite) layered with conchiolin
