Ruby, a traditional gemstone in mainstream collections, can be called the king of colored gems and a long-standing general on the auction house. Buying rubies may not be difficult, but how to buy good rubies is the essence of buying. If you want to quickly grasp the key points of selecting rubies, take a look at WILLS JEWELLERY’s evaluation standards!
WILLS JEWELLERY Gemstone evaluation
Rating notes
Cutting Cutting：The cutting and polishing process used by craftsmen. The vast majority of gemstone cuts are composite, meaning they involve more than one cutting technique. Commonly seen is the brilliant cut crown(Crown)Pavilion section with stepped cutting(Pavilion)to perfectly showcase the inherent color of the gemstone.
Due to the preciousness of rubies, the cutting standards of the master responsible for cutting are: take care of them and preserve their red color. Take care, the implication is to preserve the weight of the ruby as much as possible. To preserve the red color is to display the red color of the ruby as much as possible. Because ruby has pleochroism and uneven color distribution, different cuts will affect the red color and intensity of the color of the ruby.
Generally speaking, there is no most standard cut for rubies, only the most suitable cut. The criteria for selection by experts is that they can best display the fire and color of rubies.
Origin Origin：The physical characteristics of a gemstone’s origin. Gemstones from different origins have unique local geographical structures and characteristics. Therefore, through the characterization of gemstones, the characteristics of the origin of the gemstone can be summarized.
The main producing areas of rubies are Myanmar, Thailand, Sri Lanka, Tanzania, Mozambique, etc. The origin of rubies can be identified through the inclusions and other characteristics of rubies. Usually, rubies from Myanmar are brighter red; those from Thailand are darker; and those from Sri Lanka are more transparent. Higher; the ones in Tanzania may be purple-red, orange-red, etc.; the ones in Mozambique are slightly darker; but the place of origin does not necessarily represent the quality of the ruby, so it is better to see what you believe and go with what you feel!
Color Saturation Saturation:The saturation of a gemstone’s inherent natural color. Even the same color can have different color saturations (light to dark), giving gemstones a fascinating variety.
Color Tone: The inherent natural color category of gemstones is closely related to the place of origin and is also one of the characteristics of the place of origin. The often-heard term "pigeon's blood" describes a ruby-red to purplish or pinkish red with a soft, shiny red fluorescence. Pigeon's blood ruby is the top color among rubies. Ruby from other origins such as Myanmar and Sri Lanka may produce pigeon's blood ruby.
Ribbon Zoning：Color bands are an important element in giving gemstones their inherent color. If you look closely, they look like color stripes. Most rubies have uneven distribution of color bands, so the bands are visible from certain angles. The less obvious the color band, the higher the gem value.
Inclusion: Most rubies contain inclusions, such as needle-like patterns, crystals, cicada wing patterns, etc. For example, the inclusions in the picture resemble fingerprints, which is evidence of natural rubies.
Ruby red ribbon; reference image [source: Ruby-Sapphire.com]
Fingerprint-like inclusion; refer to the picture [Source: AIG]
transparency Transparency：The density, distribution, and quality of inclusions affect the gemstone's appearance,Gems with higher transparency will show more fire color.
Heating optimization Thermal Enhancement：The traditional gem physical optimization process is to enhance the original color of the gem, making it more appreciable, thereby increasing its value; naked eye observation cannot distinguish whether the gem has been heated. All heat-optimized gemstones are natural(Natural)The professional gemological laboratory will also provide heat-treated optimized gemstones. - natural(Natural)Rating. It is worth noting that the color of the gemstone after heating is permanent.(permanent)The change, the color will not change with the passage of time.
With WILLS JEWELLERY looking out for you, you can confidently choose your favorite piece!
Further reading - Ruby Cultural Stories:
【July Birthstone - Ruby】The magnificent gemstone of marital love
【July Birthstone - Ruby】The worship since ancient times
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