A stone bangkok dealers classify as ruby might be perceived as pink sapphire by us buyers because of

a. Consumer demand.

b. Cultural differences.

c. Rarity.

d. Availability.

Some US buyers perceive ruby as pink sapphire because of cultural differences.

Some gem dealers debate the borderline between ruby and pink sapphire. Historically, the word "ruby" referred to shades of red, which technically included pink. So there are cultural differences in the interpretation of ruby versus pink sapphire. In some gem-producing nations such as Sri Lanka, pink colors were always considered ruby, while in many consuming countries it is classified as pink sapphire.

If you are looking for a good ruby, it should be pure red with absolutely no browns and have a tone that is not too light or too dark. For sapphires, pure blue without any greens or greys is best. Again, tone should be balanced.

b. Cultural differences.

Explanation:

In different cultures the same object may have different names. This is the case of this gemstone, called by the Bangkok Stone dealer, classified as ruby, but also known as pink sapphire by American consumers. It is the same stone, which has different names in different cultures.