Aquamarine is a type of beryl, which makes it a close cousin of the emerald. Unlike emeralds, though, aquamarines are relatively common. Dark-blue varieties are found in Nigeria and Madagascar, while the best paler-blue examples come from Mozambique and especially Brazil. In the United States, aquamarine is mined in Wyoming and Colorado, but it has been found in just about all 50 states.

Although aquamarines are often step cut like emeralds, the gemstones have greater clarity, which makes them suitable for brilliant cuts, too. The most desirable aquamarines are free of inclusions. Another characteristic of aquamarine for those who enjoy wearing fine jewelry is that the stone actually looks better under artificial light than daylight, making it a good choice for dinners and other evening events.

Most people associate aquamarines with the color blue, but many are sea green and almost all aquamarine in its natural state has some green in it. Ferric iron is responsible for the hue, so the stones are usually heat-treated, which eliminates the green and leaves a rich, blue tone. When it comes to aquamarines, tone is a major factor in price, with dark, but not too dark, blues fetching the highest prices.

Interestingly, blue has not always been the preferred color for aquamarine. Victorian Era jewelers produced rings, earrings, and necklaces using aquamarines that were greenish. More recently, in the 1980s, blue was actually the stone’s liability, as the atomic structure of colorless topaz was altered in a linear accelerator to produce a cheap alternative to true aquamarine, thus temporarily depressing the gem’s value.


Best of the Web (“Hall of Fame”)

All About Jewels Dictionary

All About Jewels Dictionary

This incredible reference dictionary on jewelry, from Enchantedlearning.com, is both beautiful and comprehensive. S… [read review or visit site]

Morning Glory Antiques and Jewelry

Morning Glory Antiques and Jewelry

Jewelry collectors, feast your eyes on this internet gem! It's a goldmine of jewelry information featuring all styl… [read review or visit site]

Cathy Gordon's Jewelry Gallery

Cathy Gordon's Jewelry Gallery

With its vast galleries featuring clear images of jewelry and style, this site really covers it all! Divided up by … [read review or visit site]

Jewel History

Jewel History

Since March of 2007, readers of Lori Ettlinger Gross’s JewelHistory blog have been treated to her weekly (sometim… [read review or visit site]



Clubs & Associations

Other Great Reference Sites

Most watched eBay auctions    

Modern Diamond 41.50ct Bi Color Aquamarine 18k Gold Wrapped Ring 20.8 Grams NrTiffany & Co Diamond Legacy Aquamarine Platinum Halo Ring NrEdwardian Antique Platinum & 15ct Gold Aquamarine Diamond Pendant Deco NecklaceAntique 1920s 3ct Natural Aquamarine 14k Yellow Gold Ring99p No Reserve Beautiful Aquamarine & White Sapphire 9ct Gold Marquise Halo RingFine 11 Carat Aquamarine Gold BraceletVintage Christian Dior By Kramer Aquamarine Crystal Cluster Spray Clip EarringsAntique Edwardian 3ct Natural Round Cut Aquamarine 14k W Gold Filigree Ring 2.4gVintage 1.46ct Santa Maria Aquamarine & Diamond Ring 14k Yellow Gold $2800 L658 Diamond 2.10ct Ruby Aquamarine 9k White Gold Heart Ring NrEstate 5.6 Ct Aquamarine Solid 18k White Gold Solitaire Ring Rectangle Sz 7 NrLarge Rebecca Collins Dallas Texas Aquamarine/amber/sterling Silver Earrings-ex!14kt Yellow 3 Stone 1.8ctw Aqua Blue Topaz Stack Band Ring 2.5gr Size 5.75 Antique French Aquamarine Dormeuse 18ct Gold Earrings No ReserveAntique Edwardian 2ct Natural Round Cut Aquamarine 14k W Gold Filigree Ring 2.5gOld 925 Dtr Jay King Desert Rose Trading 3 Strands Turquoise Aquamarine NecklaceVtg Large Blue Aquamarine Geode Azurite Sterling Silver Bead Stone Necklace 22"+5ct Aquamarine 925 Solid Sterling Silver Edwardian Style Filigree Ring Sz 8Stunning Pair Of 18k Gold Cabochon Garnet & Aquamarine 18k Gold Drop EarringsVintage Earrings 1980s Aquamarine Blue Goldtone Flowers Retro Bridal JewelleryNatural Aquamarine & Opal 925 Solid Sterling Silver Art Deco Poison Ring Sz 8Outstanding Aquamarine & Diamond Ring 10kt WgVintage 925 Sterling Silver Aquamarine Dragonfly Pin / Brooch (9.4g) - 460763Vintage 10k Yellow Gold Lot Use Or Scrap 4.3 Grams / .140 Oz Vintage 10k Yellow Gold Estate Aquamarine Hoop EarringsA Good Sterling 925 Grade Silver Pendant Set With An Aquamarine Or A Blue Topaz.Vintage Necklace 1980s Aquamarine Blue Goldtone Flowers Retro Bridal Jewellery925 Sterling Silver Aquamarine Garnet Amethyst Bracelet 7'' (10.5g) - 4789381ct Natural Aquamarine & Opal 925 Solid Sterling Silver Art Deco Ring Sz 83ct Natural Aquamarine & Fire Opal 925 Solid Sterling Silver Art Deco Ring Sz 8Vintage 925 Sterling Silver Filigree Slider Aquamarine Pendant (7.8g) - 466523925 Sterling Silver Filigree Slider Aquamarine Pendant (8.2g) - 478650Austria Bermuda & Aqua Marine Blue Glass Rhinestone Flower Leaf Pin Earrings SetVintage 14k Gold And Light Aquamarine? Clover (club Suit Shape)stick Pin10ct Aquamarine 925 Solid Genuine Sterling Silver Art Deco Filigree Ring Sz 87ct Aquamarine 925 Solid Genuine Sterling Silver Art Deco Filigree Ring Sz 7Vintage 925 Sterling Silver Filigree Aquamarine Slider Pendant (8.1g) - 4718402ct Natural Aquamarine 925 Solid Sterling Silver Victorian Style Ring Sz 72ct Natural Aquamarine 925 Solid Sterling Silver Victorian Style Ring Sz 72ct Natural Aquamarine & Opal 925 Solid Genuine Sterling Silver Style Ring Sz 72ct Natural Aquamarine 925 Solid Sterling Silver Edwardian Style Ring Sz 8Collection Antique/vintage Brooches + Hair Clip (aquamarine & Diamond Paste Etc)925 Sterling Silver Faceted Aquamarine & Marcasite Earrings (7.4g) - 478405Vintage Aquamarine Crystal Genuine Pearl Starfish Sterling Silver Necklace 10ct Aquamarine 925 Solid Sterling Silver Edwardian Style Filigree Ring Sz 8Vintage Oval Cut Blue Aquamarine Stone Birthstone March Sterling Silver Ring 81ct Natural Sapphire & Aquamarine 925 Solid Sterling Silver Art Deco Ring Sz 6Vintage 925 Sterling Silver Heavy Butterfly Aquamarine Brooch (14.2g) - 4662755ct Aquamarine 925 Solid Sterling Silver Edwardian Style Filigree Ring Sz 8Vintage 925 Sterling Silver Aquamarine Peridot Amethyst Ring Sz 8 (4.1g) -440451Vintage Navajo Yazzie Sterling Silver Aquamarine Cuff Bracelet Signed 1ctMilky Aquamarine Southwest Silver Drop EarringsVintage Art Deco Jewelry Lot Aquamarine Brooch Pink Rhinestone Mesh Necklace Vintage 925 Sterling Silver Aquamarine Butterfly Pin / Brooch (12.4g) - 4606757ct Aquamarine 925 Solid Sterling Silver Edwardian Style Filigree Ring Sz 8Czech Aquamarine Glass Flower Beads Necklace 1930s StyleNatural Aquamarine Transparent Oval Cut Loose Stone (0.38 Carats)Vintage 925 Sterling Silver Heavy Butterfly Aquamarine Brooch (12.3g) - 4663252ct Natural Aquamarine & Opal 925 Solid Sterling Silver Art Deco Ring Sz 6Vintage 14kt White Gold Natural Blue Aquamarine And Diamond Women's Ring