Natural and untreated gemstones for your custom jewelry. Aquamarine, birthstone for March.
Top Koroit Boulder Opal 15.23 ct, double sided. This beautiful Unheated Gemstone shows an amazing pattern, this stones has a perfect hig lgoss polished on both sides. It is perfect for jewellery. Every Opal piece is Unique.
WEIGHT : 15.23 ct
SIZE : 21.24 * 14.48 * 6.37 mm
SHAPE : Cab. Oval
CLARITY GRADE : Opaque
TREATMENT : Untreated
HARDNESS : 5.5 - 6.5
The Opal is associated with good luck, it is the birthstone for October and the gem fo 14th wedding anniversaries.
The name for the opal comes from the Sanskrit word "Upala", meaning precious stone or stone par excellence.
The Greek word "opallios" means "to see a change of colors".
The opal is an amorphous substance that belongs to the silica group. It is formed by a series of spherical microscopic structures of various sizes, which diffract light to show a beautiful play of colors.
We took several photos:
We take photos with daylight (no lightbox and no extra lighting at all).
And we take photos and videos on mirror in a light box with extra lighting (this kind of photos clearly show the quality of the cut and the clarity of the gem).
Our shipping Options.
MdMaya Gems uses the following clarity scale when grading gemstones.
Setting aside translucent and opaque gemstones, the first classification to take into account is:
EYE CLEAN: Appears clean to the unaided eye. (Type 1, 2 and 3)
Type 1: Minute inclusions difficult to see with the unaided eye.
Type 2: Minor inclusions easy to see with the unaided eye.
Type 3: Noticeable inclusions apparent to the unaided eye.
Type 1: Minor inclusions somewhat easy to see with the unaided eye.
Type 2: Noticeable inclusions apparent to the unaided eye.
Type 3: Obvious inclusions very apparent to the unaided eye.
HEAVILY included: prominent inclusions that have a negative effect on appearance or durability.
SEVERELY INCLUDED: prominent inclusions that have a severe effect on appearance or durability or both. (Type 1, 2 and 3).
All our gemstones have been analyzed by a qualified gemologist. Each precious stone comes with a gemological certificate to guarantee its authenticity, as well as describing its unique characteristics.
Pictures in this website might not reflect the intensity and brightness of the real color of the gemstone. Additionally, the pictures might not properly represent the real size of the gem (provided in millimeters). Do not hesitate in requesting more graphic documentation of the precious stone for any clarifications. This will be provided shortly to accommodate your needs.
The photographs of the inclusions, if any, are a distinctive sign NATURAL origin.
If you are interested in obtaining more information about this gemstone, CONTACT US and we will respond as son as possible.