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    

An Antique Victorian Or Edwardian Era 18ct Gold Aquamarine Or Blue Zircon RingArt Deco Vintage Estate Natural 13.40ctw Aquamarine Diamond 14k White Gold RingEstate Certified 13.61 Ct Natural Aquamarine And Diamond Ring 14k White GoldAntique Art Nouveau 10kt Yellow Gold 4ctw Aquamarine Solitaire Ring 3.2grAntique Art Deco 10k Gold Aquamarine & Diamond Ring $9.99 Diamond HeartsPretty Edwardian 9ct Gold Aquamarine Seed Pearl Lavaliere Pendant$5100 Antique Deco 18k W Gold 4ct Natural Oval Cut Aquamarine Solitaire Ring 3gVintage Estate Retro Natural 10.24ctw Aquamarine And Diamond 14k Gold EarringsGorgeous Antique Vintage Art Deco 14k White Gold Filigree Aquamarine RingLarge Antique 4.4ct Aquamarine Rose Cut Diamond 14k Gold Ring No Reserve (0430)Antique 14k White Gold Filigree Aquamarine Ring Emerald Cut Art Deco 1920's Sz 6Custom 1.72ct Santa Maria Aquamarine & Vs Diamond Ring 18k White Gold $4800 K449Estate Vintage Antique Aquamarine Diamond Ring 14k White Solid Gold 8 + CaratsVintage 14k Yellow Gold Man's Aquamarine Ring 7.5 GramsSigned Jaylen 14k Aquamarine Baguette Diamond Ballerina Estate Designer Ring Fine Vintage 14k Yellow Plumb Gold Aquamarine Drop Dangle Pierced EarringsVintage 9ct Gold & Aquamarine Pendant.Vtg Fine 14k Plumb Gold Aquamarine Diamond Ladies Designer Cocktail Ring Sz 5Fine Vintage 14k Yellow Gold Aquamarine Stud Pierced EarringsVintage Estate Sterling Silver Genuine Blue Sapphire Gemstone Ring Sz 8 3/4Estate Handsome 10k Yellow Gold 2ct Natural Aquamarine Solitaire Mens Ring 3g Antique 1950s 12ct Sun Fancy Cut Aquamarine Diamond 10k Gold Deco RingVintage 2.25 Aqua Marine Amethyst Diamond Sterling Bridal Ring Not Scrap NrAntique 10k White Gold Filigree Aquamarine Octagon Ring Art Deco 1920's Sparkle Seidengang Laurel 18k Gold Diamond Milky Aquamarine EarringsVintage 9 Ct Gold & 3 Ct Natural Aquamarine Ring - Good ColourSherman Sapphire & Aquamarine - 2" Pinwheel Cluster Motif Brooch NrVintage Estate Sterling Silver Genuine Garnet Gemstone Ring Sz 6 1/49ct Gold 75 Point Aquamarine And 12 Point Diamond Ring. London 1981.Awesome Sterling 12ctw Natural Round Cut Aquamarine Hinged Bangle Bracelet 16.3gGenuine Aquamarine 925 Solid Sterling Silver Edwardian Style Filigree Ring Sz 82ct Genuine Aquamarine 925 Solid Sterling Silver Art Deco Filigree Ring Sz 7Vintage Custom Made 14k Gold Setting For 24.88 Carat Aquamarine GemstoneGenuine Amethyst & Aquamarine 925 Solid Sterling Silver Art Deco Ring Sz 7Vtg Fine 10k Gold Aquamarine Glass Diamond Ladies Designer Cocktail Ring Sz 5.52ct Aquamarine 925 Solid Sterling Silver Victorian Style Filigree Ring Sz 82ct Genuine Aquamarine 925 Solid Sterling Silver Victorian Style Ring Sz 8Genuine Aquamarine & Opal 925 Solid Sterling Silver Victorian Style Ring Sz 6Aquamarine 925 Solid Sterling Silver Victorian Style EarringsGenuine Aquamarine & Opal 925 Solid Sterling Silver Art Deco Filigree Ring Sz 63ct Genuine Aquamarine 925 Solid Sterling Silver Art Nouveau Filigree Ring 8Genuine Aquamarine & Fire Opal 925 Solid Sterling Silver Art Nouveau Ring Sz 8Vintage 18k Solid Gold Ring With Large Aquamarine/topaz Gemstone~not ScrapAquamarine & Seed Pearl 925 Solid Sterling Silver Victorian Style Ring Sz 7Victorian 14k Gold/ Silver 18.60ct Chalcedony & Aquamarine Dangle Earrings 6grGenuine Aquamarine & Opal 925 Solid Sterling Silver Edwardian Style Ring Sz 81ct Genuine Aquamarine 925 Solid Sterling Silver Art Nouveau Ring Sz 7Genuine Aquamarine 925 Solid Sterling Silver Art Deco Filigree Ring Sz 62ct Genuine Aquamarine 925 Solid Sterling Silver Art Deco Filigree Ring Sz 73ct Genuine Aquamarine 925 Solid Sterling Silver Art Deco Filigree Ring Sz 88ct Aquamarine 925 Solid Sterling Silver Victorian Style Filigree Ring Sz 6Vintage 10k Yellow Gold Ruby Pearl Spinel Aquamarine Ring 1.7g Size 5.75 NrAntique 10k Gold Dark Aquamarine Or Blue Topaz Emerald Cut Solitaire Ring! Wow! Genuine Aquamarine 925 Solid Sterling Silver Art Deco Filigree Ring Sz 78ct Oval Blue Aquamarine Sterling Silver Vintage Revival Filigree Ring Size 6.58ct Aquamarine 925 Solid Sterling Silver Victorian Style Filigree Ring Sz 6Vintage Blue Aquamarine Clear Paste Diamond Diamante Clip On Earrings JewelleryAntique Art Deco Aqua-marine Rhinestone Budding Flower Gold 1 3/8" Vtg BroochAquamarine & Seed Pearl 925 Solid Sterling Silver Victorian Style Ring Sz 6Regency Jewels *sapphire Aquamarine* Blue Rhinestone Bracelet Harvest Repair