In daylight hours, medium blue fluorescence can on occasion make a diamond appear barely whiter or brighter, specifically in lower coloration grades. this is due to the fact the blue fluorescence can counteract any yellowish tints inside the diamond, improving its visual attraction. however, in some lighting situations, together with under severe daylight or UV light, the diamond would possibly showcase a mild blue glow. For most people, this impact is subtle and can even decorate the diamond's beauty, even though personal alternatives range widely.