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 Jewel History blog have been treated to her weekly (someti… [read review or visit site]



Clubs & Associations

Other Great Reference Sites

Most watched eBay auctions    

Fine Antique 15 Carat Gold Edwardian / Victorian Pendant Seed Pearl & AquamarineEstate 4.91ctw Natural Aquamarine And Diamond Ring In 14k White Gold **estate 14k Yellow Gold Aquamarine Diamond Pendant 2.3 Grams 4pts 8x7mm Estate 11.11ctw Natural Aquamarine And Diamond Ring In 14k White Gold Antique Vintage C 1940 Deco 14k White Gold 6.86 C Aquamarine .36 C Diamond Ring!18ct/ 18k Diamond & Aquamarine Art Deco Design Pendant On 9ct Gold Chain,750,375Antique Victorian Pinchbeck Aquamarine Paste Glass Wide BraceletEstate 6.80 Carats Natural Aquamarine And Diamond 14k Solid White Gold Ring2 Carat Aquamarine 18ct/ 18k White Gold, 750 Fine Heavy RingEstate 6.40ct Natural Aquamarine And Diamond 14k Solid White Gold EarringsFabulous Large & Heavy Art Deco Design 5.00 Carat Aquamarine 14 Ct Gold RingAntique C. 1940 Art Deco 14k Gold Amethyst Aquamarine Topaz Sputnik Earrings!9ct/ 9k Gold Diamond & Aquamarine Fine Cluster Ring, 375Estate 5.85 Carats Natural Aquamarine And Diamond 14k Solid White Gold Ring Estate 25.75ct Natural Aquamarine And Diamond 14k Solid White Gold BraceletAntique C. 1940 Art Deco 14k Gold Amethyst Aquamarine Topaz Sputnik Pendant!Estate Diamond 15.44ct Aquamarine 14k Gold Large Cocktail Ring 17.7 Grams Nr14k Emerald Cut Aquamarine Ring Yellow Gold Fine Jewelry Signed Designer Size 7Estate $2500 14k Yellow Gold 1.15 Ct Natural Lt Blue Aquamarine Diamond PendantVintage Ornate Solid 14k Gold Euro 585 3 Aquamarine & 6 Diamond Band RingAn Amazing Vintage Aquamarine Glass Sterling Silver White Sapphire Cocktail RingEstate 2.00ct Aquamarine 14k White Gold Stud Earrings NrAntique Edwardian .75ct Natural Round Aquamarine 14k White Gold Filigree RingVintage 18k Yellow Gold Aquamarine And Diamonds Ring Size 6.5**estate 10k Yellow Gold Aquamarine Ring 5x10mm 1.8 Grams Size 6.75 Stunning Antique Aquamarine 1.00tcw Approx 14k White Gold Filigree RingFine Antique 15ct Gold Natural Aquamarine Set BroochVintage Solid 14k Yellow & Rose Gold, Aquamarine & Natural Sapphire Brooch/pin$2,700 Estate 2ct Natural Round Cut Aquamarine 14k W Gold Filigree Ring 2.1gEstate 3.55 Carats Natural Aquamarine And Diamond 14k Solid White Gold RingEstate 5.46ctw Natural Aquamarine And Diamond Ring In 14k Yellow Gold Estate 5.15 Carats Natural Aquamarine And Diamond 14k Solid Yellow Gold RingEstate 14k White Gold Aquamarine And Diamond Ring Sz 6Beautiful Estate 14k Yellow Gold Aquamarine & Diamond Ring Retail $725Antique 1.28ctw Natural Aquamarine 925 Sterling Silver Filigree Ring Size 7.5Estate Sterling Silver Genuine Aquamarine Gemstone Ring Size 6 No Reserve 925Victorian Antique 9ct Gold Brooch Set With Aquamarines & Seedpearls (a23)Vintage .75ct Natural Pear Cut Aquamarine & Diamond 10k Yg Ring~2.9grams~sz 9.25Estate $800 1.50ct Natural Emerald Cut Aquamarine 14k Gold Pendant Charm925 Sterling Silver Vintage Antique Finish Aquamarine & Amethyst Ring 3g - Sz 9Vintage 18k Diamond And Aquamarine Ring By H.sternAntique 1950s 1.50ct Natural Aquamarine Diamond 10k Yellow Gold RingEstate 2ct Natural Aquamarine Sterling Silver Filigree RingEstate 1.50ct Natural Aquamarine Sterling Silver Wedding RingVintage Estate Sterling Silver Genuine Aquamarine Ring Size 7 No Reserve 9251910-1920. Very Fine Aquamarine Pendant With Original 9 Ct Gold Chain. Boxed. Pretty Antique 15ct Gold Aquamarine & Diamond Set Stick PinLovely Vintage 2.11ctw Genuine Blue Aquamarine Sterling Silver Ring Size 7.5Tabra High End Aquamarine And Mother Of Pearl Sterling Silver Charm Pendant 10grVintage Lot Of Sterling Silver Aquamarine Stick Pin,ring Murano Stickpin,ringBeautiful Vintage 1.00ctw Genuine Aquamarine Sterling Silver Stud EarringsDelightful, Vintage, Deco Style Sterling Silver Bow Ring With Aquamarine/topazAntique 2.04ctw Genuine Aquamarine 925 Sterling Silver Filigree Ring Size 6Antique Aquamarine Childs Birthstone Ring 10k GoldGold Over 925 Sterling Silver 0.45ct Natural Quamarine Solitaire Size 8 Ring Sterling Silver Vintage 925 Filigree Cocktail Aquamarine Ring Sz 8 (2.6g) 510223Estate 6.00 Carats Natural Aquamarine And Diamond 14k Solid White Gold RingEstate 2ct Natural Round Cut Aquamarine 14k Y Gold Sterling Filigree Ring 1.7gEstate 2ct Natural Aquamarine Sterling Silver Filigree RingEstate 1.25ct Natural Aquamarine Sterling Silver Mens Ring Band