Black Astrum has launched the Signature Card, a line of diamond encrusted business cards. The cards are made using a combination of modern and traditional techniques and Swiss materials, and decorated with diamonds of the highest quality.

Sufian Khawaja, Black Astrum’s concept director, says they’ve had several requests from celebrities businessmen, but cards are offered by invitation only.

Their cost varies since the cards are custom made, but the average selling price per card is about $1,550. The cards come in sets of 25, 50 and 100 cards.