These are the main gemstones in the market.

Global Appraisal Group works with all this stones.

ALEXANDRITE

Green in sunlight. Red in lamplight. Color-changing alexandrite is nature’s magic trick.

AMBER

Amber is nature’s time capsule. This fossilized tree resin contains remnants of life on earth millions of years ago.

AMETHYST

The essence of the color purple, amethyst is beautiful enough for crown jewels yet affordable enough for class rings.

AMETRINE

This transparent quartz has colors of both amethyst and citrine, and is called ametrine or amethyst-citrine.

AQUAMARINE

Named after seawater, aquamarine’s fresh watery hue is a cool plunge into a refreshing pool.

CITRINE

Citrine is the transparent, pale yellow to brownish orange variety of quartz.

DIAMOND

Diamonds are among nature’s most precious and beautiful creations.

FANCY COLOR DIAMOND

Dazzling brilliance. Captivating color. The planet’s most valued gems are fancy color diamonds.

EMERALD

Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine.

GARNET

Garnets are a set of closely related minerals forming a group, with gemstones in almost every color.

IOLITE

According to legend, Vikings used iolite slices to reduce glare when checking the sun’s position.

JADE

Jade is actually two separate gems: nephrite and jadeite. In China, a pierced jade disk is a symbol of heaven.

KUNZITE

Collectors love kunzite for its color range, from delicate pastel pink to intense violetish purple.

LAPIS LAZULI

Lapis is a beautiful rock; an aggregate of several minerals, mainly lazurite, calcite, and pyrite.

MOONSTONE

A ghostly sheen moves under the surface of this feldspar, like moonlight glowing in water.

MORGANITE

Morganite is the pink to orange-pink variety of beryl, a mineral that includes emerald and aquamarine.

OPAL

Fireworks. Jellyfish. Galaxies. Lightning. Opal’s shifting play of kaleidoscopic colors is unlike any other gem.

PEARL

Perfect shining spheres. Lustrous baroque forms. Seductive strands, warm to the touch. Pearls are simply and purely organic.

ROSE QUARTZ

Rose quartz is a quartz variety that gets its name from its delicate pink color.

RUBY

Ruby is the most valuable variety of the corundum mineral species, which also includes sapphire.

SAPPHIRE

The name “sapphire” can also apply to any corundum that’s not ruby, another corundum variety.

SPINEL

The Black Prince’s Ruby. The Timur Ruby. For centuries, spinel, the great imposter, masqueraded as ruby in Europe’s crown jewels.

SUNSTONE

Sunstone’s phenomenal varieties show a distinct and lively glitter called aventurescence.

TANZANITE

Poised between lush blue, vibrant violet, and rich purple, exotic tanzanite is found in only one place on earth, near majestic Mount Kilimanjaro.

TOPAZ

Honey yellow. Fiery orange. Cyclamen pink. Icy blue. In warm or cool tones, topaz is a lustrous and brilliant gem.

TOURMALINE

Tourmalines have a variety of exciting colors with one of the widest color ranges of any gem.

TURQUOISE

Azure sky, robin’s egg blue: Vivid shades of turquoise define the color that’s named after this gem.

ZIRCON

Zircon is a colorful gem with high refraction and fire that’s unfairly confused with cubic zirconia.