Grapefruit is oblate in shape, ranges in diameter from 3 to 5 inches and can weigh up to 150 g. Characteristically, it has thick, tough skin than that in the oranges. Inside, the fruit is segmented into arils as in other citrus fruits.
Nacre (/ËneÉªkÉr/ NAY-kÉr also /ËnÃ¦krÉ/ NAK-rÉ),[1] also known as mother of pearl, is an organic-inorganic composite material produced by some molluscs as an inner shell layer; it also makes up the outer coating of pearls. It is strong, resilient, and iridescent.
This is what causes that almost supernatural change of colors as a piece is tilted and viewed from different angles. Nacre colors include: 1  Mat-Mild silvery gray tone, lacking lustre. 2  Stone-Nearly white, and mildly reflective. 3  Chip-Multi-colored variety. 4  White-Very iridescent and the most widely used for jewelry. 5  Iridescent-Largely a glossy mix of pink and green.