Elegant Logo Design for GINTHOTA SUN POLISH - A Visual Identity

Create a logo with the following elements: The text 'GINTHOTA SUN POLISH' in a bold, white, sans-serif font, arranged in a semi-circular arc at the top. Below the text is a bright blue diamond shape with a glowing inner effect. Inside the diamond are the letters 'GSP' in a bold, white, geometric font. Underneath the diamond are the words 'GEM CUT & POLISH' and 'LAPIDARY' in a smaller, white, sans-serif font, stacked one above the other. The background is solid black. The diamond should have a strong, bright blue inner glow. The text should be clearly readable. The location is Colombo, Western Province, Sri Lanka, but do not add the location to the logo itself