Shivani Gems Inc. - Suppliers and Manufacturers of Marquises, Pear Shapes, Princess, and Oval Diamonds.

4Cs

The 4Cs - color, clarity, cut and carat weight - are a globally accepted standard for assessing the quality of a diamond. At Shivani Gems, we study each to create extraordinary fancy diamonds.

CUT
COLOR
CLARITY
CARAT WEIGHT

A round diamond’s cut is graded from Excellent to Poor, based on proportion, symmetry and polish. In the case of fancy shaped diamonds, there is no cut grade given on certificates. However, owing to an unparalleled cutting-process, technology and physics, a Shivani Gems fancy diamond showcases the ideal alignment of facets and angles that reflect, refract and disperse light to optimize the luster of a stone.

Natural diamonds come to life in a variety of shades from warm whites to tinges of yellow. The closer it is to colorless or Grade D, the highest grade possible, the rarer it is deemed to be.

Colorless - D to F
Near colorless - G to J
Faint - K to M
Very light - N to R
Light - S to Z

Colorless
Near Colorless
Faint Yellow
Very Light Yellow
Light Yellow

In essence, the clarity of a diamond is its rarity or purity. The natural process of its creation forms inclusions or marks, invisible to the naked eye, that place it on a clarity scale -

Flawless (FL): No inclusions or blemishes visible under 10x magnification.
Internally Flawless (IF): No internal inclusions and only minor external blemishes visible under 10x magnification.
Very Very Slightly Included (VVS1 and VVS2): Minute inclusions that are very difficult to detect under 10x magnification.
Very Slightly Included (VS1 and VS2): Minor inclusions that are difficult to detect under 10x magnification.
Slightly Included (SI1 and SI2): Noticeable inclusions under 10x magnification, but often not visible to the naked eye.

Included (I1, I2, and I3): Obvious inclusions visible under 10x magnification and possibly to the naked eye.

While carat weight measures the size of a diamond and the larger in size the more valuable it is likely to be, the other 3Cs - cut, color and clarity, influence its greater value. One diamond carat is equal to 200 milligrams. The understanding of carat weight helps select a diamond that meets design and budget.

Diamond Shapes

Rollover on diamonds to learn more.

Marquise
The marquise diamond, also called the navette cut, features an elongated shape with pointed ends. Originating in 18th - century France, it maximizes carat weight and creates the illusion of a larger stone.
Pear
Combining round and marquise cuts, the pear-shaped diamond dates back to the 1400s. Its teardrop shape offers excellent light reflection, ideal for pendants and earrings.
Oval
Introduced in the 1960s, the oval diamond enhances size appearance while maintaining the brilliance of a round cut. The shape is a modern twist on classic elegance.
Emerald
The emerald cut, popular since the 1920s Art Deco era, features a rectangular shape with step cuts. It highlights diamond clarity and creates a sophisticated hall-of-mirrors effect.
Heart
A symbol of love since the 1500s, the heart-shaped diamond requires precise craftsmanship for symmetry and brilliance. It’s often chosen for romantic jewelry like engagement rings and pendants.
Princess
Created in the 1980s, the princess cut is a square or rectangular shape with pointer corners. Known for its brilliance, it combines the fire of a round cut with modern design.
Baguette
The baguette cut, with its rectangular shape and step cuts, dates back to the early 20th century. Often used as accent stones, they add sleek, linear appeal to jewelry.
Half-Moons
Half-moon diamonds, semi-circular in shape, are used as side stones to complement a central diamond. Their modern design enhances traditional settings.
Trapezoids
Trapezoid diamonds, or trapeze cuts, have four sides with two parallels. Typically used as side stones, they provide balance and symmetry to central stones.
Epaulettes
Epaulette diamonds are triangular shapes named for their resemblance to military epaulettes. Used as side stones, they add geometric precision and enhance the main diamond’s prominence.