May birthstone is Emerald. Emerald is a precious gemstone and a variety of the mineral beryl colored green by trace amounts of chromium and sometimes vanadium.Beryl has a hardness of 7.5–8 on the Mohs scale. Most emeralds are highly included.

Emeralds, like all colored gemstones, are graded using four basic parameters–the four Cs of connoisseurship: color, clarity, cut and carat weight. Normally, in the grading of colored gemstones, color is by far the most important criterion. However, in the grading of emeralds, clarity is considered a close second. A fine emerald must possess not only a pure verdant green hue as described below, but also a high degree of transparencyto be considered a top gem.

In the 1960s, the American jewelry industry changed the definition of emerald to include the green vanadium-bearing beryl. As a result, vanadium emeralds purchased as emeralds in the United States are not recognized as such in the UK and Europe. In America, the distinction between traditional emeralds and the new vanadium kind is often reflected in the use of terms such as "Colombian emerald".

In gemology, color is divided into three components: hue, saturation, and tone. Emeralds occur in hues ranging from yellow-green to blue-green, with the primary hue necessarily being green. Yellow and blue are the normal secondary hues found in emeralds. Only gems that are medium to dark in tone are considered emeralds; light-toned gems are known instead by the species name green beryl. In addition, a fine emerald will be saturated and have a hue that is bright (vivid).

Emeralds tend to have numerous inclusions and surface breaking fissures. Unlike diamonds, where the loupe standard, i.e. 10× magnification, is used to grade clarity, emeralds are graded by eye. Thus, if an emerald has no visible inclusions to the eye (assuming normal visual acuity) it is considered flawless. Stones that lack surface breaking fissures are extremely rare and therefore almost all emeralds are treated ("oiled", see below) to enhance the apparent clarity. Other treatments, for example the use of green-tinted oil, are not acceptable in the trade. The relative non-uniformity motivates the cutting of emeralds in cabochon form, rather than faceted shapes. Faceted emeralds are most commonly given an oval cut, or the signature emerald cut, a rectangular cut with facets around the top edge.

Talisman with Embrald and Moonstones Necklace

Designer: Lori Swartz

Tags

Shipping Date

Shipping Date

More in this Collection

Dyed Nylon Faux White Pearl Ring

Jahyun Rita Baek

Tiny Enamel Pendant

Kokkino

Raw Ring in Bronze

Olivia Shih

Acorn Stud Earrings Sterling Silver with 18k Gold Accent

Shimara Carlow

Small Target Studs

Kokkino

Large Target Studs

Kokkino

Murano Glass Pendant with Vario Clasps

Marcel Roelofs

Mod Stackable Pearl Ring with White Acrylic

Annie Tung

Small Acorn Cup Pendant in Sterling Silver with 18kt Gold Accent

Shimara Carlow

Medium Enamel Silver Pendant

Kokkino

Ball Earrings with Large Metallic Baroque Pearls Gold-filled Ear Wire

Anchovy

gold and silver wrap earrings- sterling silver and 18ct gold

Shimara Carlow

Maple Seed Drop Earrings

Kelim Jewelry

Flute Earrings (Small)

Kelim Jewelry

Enamel Small Stud Earring

Kokkino

14k Yellow Gold 2 mm Half Round Classic Wedding Band with Silk Finish

Lireille

14K Gold Tiny Freshwater Cultured Pearl Post Earrings

Interworld Designs

14k Gold Bezel Set Oval Turquoise Post Earrings

Lireille

Freshwater Heart Pearl Bracelet with Nylon String

Anchovy

Yellow Brass Center Ring Wrapped in Sterling Silver

Lori Swartz

Nylon Mesh Ring

Lireille

Twin Necklace with White and Black Pearls on Gold-filled Box Chain

Anchovy

Cloud Necklace in Perspex and Oxidized Sterling Silver

Jahyun Rita Baek

18k Gold Oxidized Acorn Cup Wrap Stud Earrings

Shimara Carlow

Medium Drop Enamel Earring

Kokkino

Enamel Large Studs Earrings

Kokkino

Tread Hoops Earrings XL 2.25" to 2.75"

Lori Swartz

Forged Silver Bangle Bracelet

Peg Fetter

18k Yellow Gold 2 mm Half Round Classic Wedding Band with Brushed Finish

Lireille

Mini Rose Petal Necklace

Kelim Jewelry

14k Bumble Bee Post Earrings

Lireille

Sterling Silver Oxidized 8.7mm Beveled Cable Chain Bracelet with Nautical-style Clasp

Lireille

Bedrock Stacking Set

Jenny Reeves

18K Rose Gold PVD 6 mm Hammered Texture Tungsten Band

Lireille

18k Gold Acorn Cup Triple Ring Set

Shimara Carlow

Dyed Nylon Mesh Ring

Jahyun Rita Baek

14k Gold and Oxidized Steel Wrap Ring

Peg Fetter