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Dafina One Carat

Dafina Jewelry® has introduced Dafina One Carat based on the two most demanded gemstones for an engagement ring:

  • 6.5± mm (diameter) brilliant cut (round) diamond
  • 6.5± mm (diameter) brilliant cut (round) sapphire

To reach the best choice in premium quality vs. budget, and to eliminate confusion, Dafina has optimized all important characteristics of the above gemstones in one standard set, and offers only these center stones as "Dafina One Carat":

Dafina One Carat Diamond

6.5± mm (diameter) brilliant cut (round) diamond

A Dafina One Carat Diamond is an optimum diamond, picked with equal attention to all parameters and factors affecting its quality, and will be set into your chosen Dafina engagement ring to last your life long journey.

The GIA certificate for each Dafina One Carat center diamond is enclosed in the package when you receive your ring.

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Summary
Carat Weight 1 - 1.05
Color G
Clarity VS2
Cut Excellent - Very Good
Polish Excellent - Very Good
Symmetry Excellent - Very Good
Depth % (For round) 60 - 62.5
Table % (For round) 55 - 60
Depth % (For princess) 68 - 73
Table % (For princess) 66 - 74
Culet None
Florescense None - Faint
L/ W Ratio (For princess) 1:1 - 1:1.05
Certificate GIA
Treatment Natural. No treatment

Dafina One Carat Sapphire

6.5± mm (diameter) brilliant cut (round) sapphire

A Dafina One Carat Sapphire is an optimum sapphire, picked with equal attention to all parameters and factors affecting its quality, and will be set into your chosen Dafina engagement ring to last your life long journey.

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Watch the Blue Sapphire

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View Center Stone Education

Summary
Carat Weight 1.2 - 1.41
Color Intense Premium Blue or Pink
Tone Medium to Medium Dark
Cut Excellent - Very Good
Clarity Eye Clean
Origin Ceylon
Treatment Natural. Heat Treated Only

Table is the biggest facet of a symmetrically cut gemstone, which is its top surface. The size of a diamond's table is expressed as a percentage of its average diameter.

Table % is the other key and sensitive parameter that affects the light performance and play of light in a diamond.

Ideal Excellent Good Fair Poor
Table % 53 – 58 58.1 – 60 60.1 – 64 64 - 70 >70

The weight of a 6.5± mm round diamond ranges from 1.0 to 1.05 carat, depending on the cut of that specific diamond. (6.5± mm diamond and 6.5± mm sapphire have different carat weights because they have different molecular densities)

"White diamonds" range from absolutely colorless to pale yellow.

Different tones of color exist because of specific conditions in which diamonds are formed under the earth’s surface. The color grading of white diamonds starts with letter D and continues down to letter Z in alphabetical order.

Diamonds with grades D, E, F are considered colorless (most expensive/ rare), while grades G, H, are considered near colorless (grade G is closest grade to colorless). The tone of yellow starts to be noticeable from grade I, and at grade J and below, the diamond is considered pale yellow.

Clarity refers to the degree of inclusions or impurities that are visible in or on a diamond.

Inclusions could be the result of presence of foreign microscopic materials that are trapped in the diamond when it was forming, or structural imperfections such as cracks, chips, or shades/ clouds.

Most demanded diamonds are the ones with the least inclusions.

Gemologists categorize diamonds into 5 main groupings in regards to inclusions:

FL/ IF: Flawless (no inclusions inside or on the surface of diamond)/ Internally Flawless (no inclusions inside the diamond). These diamonds are extremely rare.

VVS1/ VVS2: Very very slightly included under X10 magnification. Inclusions are not visible to the naked eye.

VS1/ VS2: Very slightly included under X10 magnification. Inclusions are not visible to the naked eye.

SI1/ SI2: Slightly included. Inclusions are visible under X10 magnification, and most likely to naked eyes.

I1/ I2/ I3: Included.

Cut refers to the proportion and sizes of facets, and alignment of width, length, depth, and diameter of a diamond. The more precisely all these sizes and facets are aligned, the stronger light reflection a diamond will produce, which results in nicer appearance and more brilliance.

Gemologists categorize diamonds into 5 groupings in regards to cut:

Excellent or Ideal cut: With this accuracy of cut, almost all the light that enters the diamond is going to be reflected back as sparkles. Excellent cuts are rather rare.

Very good cut: Produces almost the same level of sparkle as the excellent cut, at a lower price.

Good cut: Produces less sparkle than "excellent" and "very good" cuts; however for a much less price.

Fair cut: Although there are still some sparkles, but the diamond won’t shine as much as a good cut diamond.

Poor cut: Diamond looses most of the light that enters it due to bad proportions and symmetry. Diamonds that are too deep, or too shallow are considered poor cut diamonds.

Shows how clean and smooth every facet of a diamond is finished. Diamonds that are well finished have less lines and scratches visible on their facets and more defined edges where the facets meet. Polish affects the amount of shine and brilliance each diamond generates, and is graded as: E/ Excellent, VG/ Very good, G/ Good, F/ Fair, P/ Poor.

The exactness of shapes and arrangements of facets and overall alignment of a diamond is its symmetry. In a symmetrical diamond, the table is exactly centered at the top of the gemstone, table and girdle lines are parallel when viewed from the side, and culet is in the center of the table facet when viewed from the top. Symmetry is graded as: E/ Excellent, VG/ Very good, G/ Good, F/ Fair, P/ Poor.

The height of a diamond, measured from the culet to the table is called depth. The depth of a diamond is expressed as a percentage of its average diameter.

Depth % is one of the key and sensitive parameters that affects the light performance and play of light in a diamond.

Ideal Excellent Good Fair Poor
Depth % 58 – 60 60.1 – 62 62 – 64 64 - 66 <57,>66

The height of a diamond, measured from the culet to the table is called depth. The depth of a diamond is expressed as a percentage of its average length of one side.

Depth % is one of the key and sensitive parameters that affects the light performance and play of light in a diamond.

Premium Ideal Excellent Very Good Good Fair Poor
Depth % 65 – 70 63 – 70 62 – 73 62 – 75 56 – 82 55 – 86 <55,>86

Table is the biggest facet of a symmetrically cut gemstone, which is its top surface. The size of the diamond's table is expressed as a percentage of its average length of one side.

Table % is the other key and sensitive parameter that affects the light performance and play of light in a diamond.

Ideal Excellent Very Good Good Fair Poor
Table % 65 – 72 62 – 74 57 – 78 55 – 85 57 – 89 <57,>89

Culet is the lowest point of a diamond underneath the pavilion, where all facets meet. In a very well cut diamond culet is graded as "None" meaning it is so sharp that it’s undetectable by naked eyes. This also indicates that the cut and light performance of the diamond are very precise.

Culet can distract light reflections and interfere with light performance of a diamond and make it weaker.

Fluorescence is the diamond’s tendency to emit a pale glow when subjected to ultraviolet light. Usually this glow is unnoticed but in some cases this can give the diamond a milky or oily look when viewed from the top. Grades of fluorescence are: None, Faint, Medium, Strong, and Very Strong, with "None" being the most desirable.

Length (L) divided by Width (W) is the Length-to-Width ratio. This shows how evenly "square" a princess cut diamond appears when viewed from the top. The best light performance is at 1 : 1 ratio.

The weight of a 6.5± mm round sapphire ranges from 1.2 to 1.41 carat, depending on the cut of that specific sapphire. (6.5± mm diamond and 6.5± mm sapphire have different carat weights because they have different molecular densities)

Sapphires are found in a wide range of colors including: blue, pink, yellow, green, and white.

Other than color, attributes such as tone and intensity of color also influence the value of sapphires.

Tone is referred to shades of darkness in one specific color. These shades could be very minimal and make the color very pale at one extreme, or they could be strong and bring the color closer to black at the other extreme.

The most desired tone in sapphires is a medium to medium dark tone that is constant throughout the gemstone.

Sapphires unlike diamonds don’t have a standard grading system for their cut.

Each colored gemstone is very unique in regards to its color distribution, intensity, and consistency; therefore the best cut for each gemstone is the one that amplifies its unique brilliance and color/ tone attributes.

Nevertheless, in an excellent cut sapphire, all facets and surfaces must be extremely clean, sharp and aligned. If the gemstone is round, the diameter should be the same in all places with no asymmetry, and the table which is the biggest facet on top of the gemstone, must be exactly centered and symmetrical when view from the top; also the table and girdle lines must be parallel when gemstone is viewed from the side.

When looked from the side, the culet (lowest point of the gemstone underneath the pavilion) must be exactly in the middle with no leaning towards left or right, and the general profile of the gemstone must be symmetrical and proportionate with no bulging.

The girdle line is another area to pay attention to, which should not be too thick or too thin.

Clarity refers to the amount of inclusions visible in a sapphire. Because the environment in which sapphires naturally form is usually rich with other elements and minerals, they are often trapped in a sapphire crystal in the form of inclusions. These mineral inclusions are called needles since they mostly form long thin lines.

In general, inclusions lower the value of a sapphire and if they are not visible to naked eyes, the gemstone is considered “eye-clean” which falls into premium quality.

Sapphires are mined in many different places in the world including: Africa, Australia, India, Thailand, Sri Lanka, China, and Madagascar.

The best sapphires usually come from Sri Lanka (known as Ceylon Sapphires) and are unique in color, clarity and luster compared to sapphires from other countries.

As a common industry practice, most sapphires are heat treated to improve their color and clarity.

GIA stands for Gemological Institute of America, the most reputable diamond grading laboratory in the world. GIA examines diamonds using very sensitive and advanced instruments to determine their grade and issue a certificate/ identification document for them, which is internationally accepted and referred to.

The GIA certificate accompanies the certified diamond everywhere it goes as its ID document.