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Gemstone Education

Evaluate Precious Gemstones

EVALUATING PRECIOUS GEMSTONESGem Color A gemstone’s color is described by its natural tone and hue. For most stone types, an intense, heavily saturated color of medium tone is attributed the highest value. Many gems are enhanced to improve their colorations, a treatment that’s become accepted in the industry.Gem Cut For a majority of gemstones, a superior cut is marked by the stone’s ability to reflect light, its symmetrical appearance, and the lus

Gemstone Education

COLOR Color is the most obvious and attractive feature of gemstones. The jewelry industry recognizes the highest quality gemstones by purity of their hue, the depth of tone, and the color saturation. The best value are gemstones that may include "slight" traces of other colors, are not too light or dark, and have a lot of saturated color. Ronaldo Designer Jewelry, Inc. offers some of the highest-quality colored gemstones available. Nearly all gemstones today have been treated to enhance t

Gemstone Education

We have a stunning selection of the highest quality gemstones including Amethyst, Aquamarine, Black Onyx, Blue Sapphire, Blue Topaz, Citrine, Emerald, Fire Opal, Green Tourmaline, Iolite, Peridot, Pink Sapphire, Pink Tourmaline, Red Garnet, Ruby, Tanzanite, White Sapphire and Yellow Sapphire. If you are looking for a gemstone that you do not see here, please let us know!


Learn what to look for in a gemstone's clarity.


Learn what to look for in a quality-cut gemstone.


Learn why carat weight is not necessarily an accurate gauge for the gemstone size.


Learn what enhancements are accepted by the jewellery industry.


Learn about a gemstone's hue, tone, and saturation.