Given a reference text about the Recording Industry Association of America (RIAA) awards, tell me how many albums need to be sold to get an award.

Context: In the United States, the Recording Industry Association of America awards certification based on the number of albums and singles sold through retail and other ancillary markets. Other countries have similar awards. Certification is not automatic; for an award to be made, the record label must first request certification. The audit is conducted against net shipments after returns, which includes albums sold directly to retailers and one-stops, direct-to-consumer sales and other outlets.

Description and qualifications

A platinum award for the album GHV2 of Madonna
A Gold record is a song or album that sells 500,000 units. The award was launched in 1958; originally, the requirement for a Gold single was one million units sold and a Gold album represented $1 million in sales. In 1975, the additional requirement of 500,000 units sold was added for Gold albums. Reflecting growth in record sales, the Platinum award was added in 1976, for albums able to sell one million units, and singles selling two million units. The Multi-Platinum award was introduced in 1984, signifying multiple Platinum levels of albums and singles. In 1989, the sales thresholds for singles were reduced to 500,000 for Gold and 1,000,000 for Platinum, reflecting a decrease in sales of singles. In 1992, RIAA began counting each disc in a multi-disc set as one unit toward certification. Reflecting additional growth in music sales, the Diamond award was instituted in 1999 for albums or singles selling ten million units. Because of these changes in criteria, the sales level associated with a particular award depends on when the award was made.

Answer: As of 1989, a song or album needed to exceed a sales threshold of 500,000 for Gold and 1,000,000 for Platinum. In 1999 after a growth in music sales, the Diamond award was introduced for songs or albums that sold over 10,000,000 units.