The 4Cs of Diamonds

Color Grade: With the exception of fancy-colored diamonds, the most valuable diamonds are those with the least color. Although many people think of gem quality diamonds as colorless, completely colorless diamonds are very rare. The diamond color scale ranges from D (colorless) to Z (light yellow or brown). A diamond’s color is determined by a[…..]

Platinum vs. White Gold

PLATINUM VS. WHITE GOLD Platinum and white gold are two very different metals. The biggest differences between platinum and white gold are that platinum is a naturally white metal, and is more dense and durable. The difference in cost is primarily due to platinum’s rarity and higher level of purity in platinum jewelry. When comparing costs, keep[…..]

About Gold

About Gold Pure gold (fine gold) is softer than pure silver but harder than tin. Its beauty and luster are unmatched by any alloyed golds. The extreme malleability, ductility, and softness of pure gold make it practically useless for jewelry applications. Alloying elements (other metals) are added to gold to increase the toughness and hardness[…..]

Anniversary Stones

1st Anniversary – Peridot
2nd Anniversary – Garnet
3rd Anniversary – Pearls, Jade
4th Anniversary – Blue Topaz, Blue Zircon, Amethyst
5th Anniversary – Sapphire, Pink Tourmaline
6th Anniversary – Amethyst, Turquoise
7th Anniversary – Yellow Sapphire[…..]

Gemstone Care

Caring for your Gemstone from AGTA Gems are among the most durable of nature’s creations. With a little care, they will be as beautiful for generations to come as they are today. Keep in mind these gem care tips. The best way to clean your gemstone jewelry is in a bowl of water with a[…..]

AGTA Codes

Any traditional process other than cutting and polishing that improves the
appearance (color/clarity/phenomena), durability or availability of a gemstone.