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    

Antique Diamond 7.83ct Aquamarine 18k White Gold Large Ring 13.8 Grams NrAntique Retro 10k Rose Gold 30ct Natural Amethyst Solitaire Fleur De Lis Ring 100% Natural 53.00ctw Aquamarine & Multi-colored Tourmaline 14k Gold Necklace Enzo Luccati 18k White Gold Aquamarine & Diamond Cocktail Ring Size 7 No ReserveVintage 14k Solid Yellow Gold Ring With Oval Aquamarine And Diamonds14k Aquamarine Pearl Ring Victorian Vintage Cocktail Boxed Fine Huge 9.75 CaratsEstate Diamond 5.21ct Blue Topaz Aquamarine Gold Halo Ring 6.7 Grams NrArt Deco Vintage Natural Santa Maria Aquamarine 18k White Gold Filigree RingTested Solid 14k Gold Aquamarine & Amethyst Gemstone Ring~size 7Estate Diamond 14.10ct Blue Topaz Aquamarine 18k Gold Ring 15.5 Grams NrArt Deco Platinum 2.10ct Diamond 19.00ct Natural Aquamarine Line Bracelet Vintage 10k Yellow Gold Aquamarine Cocktail Ring 1.25ct No ReserveStunning Vintage 9ct Gold & Aquamarine Set Ornate Chain Bracelet 6.5" Long 3.5gDelicate Stunning! Antique Art Deco 1920's Sterling Aquamarine Drippy Earrings3ct Natural Aquamarine 925 Solid Sterling Silver Art Deco Filigree Ring Sz 7Estate, 9k Solid Yellow Gold Aquamarine & Diamond Ring. (sz 7.25).Vintage Solid 14k Gold Opal Cross Pendant Aquamarine 6.1gm Unusual Jewelry5ct Blue Aquamarine* Sterling Silver 925 Edwardian Floral Filigree Ring Size 7Vintage Sterling Silver Faceted Aquamarine Square Ring Sz 8 (7.5g) - 4082102ct Natural Aquamarine 925 Solid Sterling Silver Art Deco Filigree Ring Sz 8Vintage Sterling Silver Aquamarine Popcorn Bracelet 7.5'' (15.6g) - 416821Gorgeous Estate Vintage Baguette Cut Natural Aquamarine Sterling Silver Ring Nr!Vintage 9ct Gold Diamond & Aquamarine Set Ornate Ring Uk Size O Usa 7.5Vintage Estate Sterling Silver Genuine Aquamarine Gemstone Bracelet Nr 925Vintage Sterling Silver Faceted Aquamarine Ring Size 6.5 (7g) - 417060 Vintage 10k Yellow Gold 4.89ct Natural Aquamarine Solitaire Ring (sz 5.75) Sterling 925 Vintage Topaz Aquamarine Gemstone Pendant Necklace Filigree 50642ct Natural Sapphire & Aquamarine 925 Solid Sterling Silver Art Deco Ring Sz 73ct Aquamarine & Opal 925 Solid Sterling Silver Art Nouveau Filigree Ring Sz 6Lady's Formal Wear, Antique Aquamarine Ring, Size 7, 41 Carats, Set In Sterling14k 585 Vintage White Gold Large 17ct Aquamarine Gem Stone Cocktail 2ct Natural Aquamarine 925 Solid Sterling Silver Art Deco Filigree Ring Sz 82ct Natural Aquamarine & Seed Pearl 925 Solid Sterling Silver Filigree Ring Sz 7Vintage 925 Sterling Silver Faceted Aquamarine Ring Size 8 (4.7g) - 417020Natural Aquamarine & Fire Opal 925 Solid Sterling Silver Art Deco Ring Sz 62ct Natural Aquamarine & Pearl 925 Solid Sterling Silver Art Deco Ring Sz 72ct Natural Aquamarine 925 Solid Sterling Silver Art Deco Filigree Ring Sz 6Natural Aquamarine 925 Solid Sterling Silver Victorian Style Band Ring Sz 8.251ct Natural Aquamarine 925 Solid Sterling Silver Victorian Style Ring Sz 6Vintage Stunning 3.0 Ct. Aquamarine Diamond 14k Gold Ring - Holiday Gift BoxDesigner Diamond Sapphire & Aquamarine Leopard 14k Yellow Gold RingVintage Ornate Sterling Silver Seven Aquamarine Stone Bracelet1ct Natural Aquamarine & Pearl 925 Solid Sterling Silver Art Deco Ring Sz 73ct Natural Aquamarine & Fire Opal 925 Solid Sterling Silver Art Deco Ring Sz 6Vintage Sterling Silver Navajo Aquamarine Charm Pendant (3.8g) - 402031Natural Aquamarine & Pearl Genuine 925 Solid Sterling Silver Art Deco Ring Sz 72ct Natural Aquamarine & Fire Opal 925 Solid Sterling Silver Art Deco Ring Sz 82ct Natural Aquamarine 925 Solid Sterling Silver Edwardian Style Ring Sz 792.5 Sterling Silver Natural Beautiful Aquamarine Double Stones Studs Earrings Natural Aquamarine & Pearl 925 Solid Sterling Silver Art Deco Filigree Ring Sz 63ct Natural Aquamarine 925 Solid Sterling Silver Edwardian Style Ring Sz 81ct Natural Aquamarine 925 Solid Sterling Silver Art Nouveau Filigree Ring Sz 72ct Natural Aquamarine 925 Solid Sterling Silver Art Deco Filigree Ring Sz 76ct Aquamarine Genuine 25 Solid Sterling Silver Art Deco Filigree EarringsNatural Aquamarine 925 Solid Sterling Silver Victorian Style Filigree Ring Sz 63ct Aquamarine & Fire Opal 925 Solid Sterling Silver Edwardian Style Ring Sz 8New 9ct Solid Yellow Gold Trillion Aquamarine & Diamond RingMermaid Ring .925 Sterling Silver Sim Aquamarine Size 7, #827Vintage 925 Sterling Silver Faceted Aquamarine Ring Size 9 (2.5g) - 416851Unique Vintage Gold Tone Blue Rhinestone March Aquamarine Childs Bracelet! 5626j