1. Use a Strip of Paper: Take a strip of paper and wrap it around the base of your finger. Mark the paper where the strip overlaps. Measure the length of the paper strip in millimeters and use a ring size chart to determine your ring size.
 2. Use a Ring you Already Own: Find a ring that fits you well and measure the inside diameter of the ring in millimeters. Use a ring size chart to determine your ring size.

 1. Test with a loupe: Using a loupe or a magnifying glass, examine the stone for inclusions or blemishes. Moissanite usually does not have inclusions, while diamonds often have some. You can also look for double refraction, where the stone appears to have a double image when viewed through the loupe. Moissanite has a higher refractive index than diamond and often displays this property.
 2. Test with a UV light: Moissanite can glow a greenish-blue color when exposed to UV light. To test this, hold the stone under a UV light source and observe the color of the stone. If it glows greenish-blue, it may be moissanite.

Moissanite has a similar appearance to diamonds but has some distinct differences. Moissanite has a higher refractive index and dispersion than diamonds, which means it can have more fire and brilliance. It is also more affordable than diamonds and considered to be more environmentally friendly.

Moissanite jewelry can be cared for in a similar way to diamond jewelry. You can clean it with a soft brush and mild soap and water or use a jewelry cleaning solution. Avoid exposing it to harsh chemicals or extreme temperatures, as this can damage the stone. It's also a good idea to store it in a safe and dry place when not wearing it to prevent scratches or damage.