Fascination with the Jazz Age is endless, and even today jewelry designers continue to be inspired by authentic Art Deco jewelry and watches.
The Art Deco period, encompassing the 1920s and ’30s, ushered in a very distinct look in the design of jewelry. There were many influences on the jewelry of the era that actually began to take shape prior to the 1920s. In 1909, Serge Diaghilev brought the Ballet Russes to Paris, and women went wild for the company’s exotic and vibrant costumes It’s no wonder, then, that jade, lapis lazuli, coral, turquoise and other bright gemstones became all the rage. There already existed a fascination with the East, particularly China and Japan, and motifs consisting of fans and masks started to show up in Art Deco jewelry.
However, the event that had the greatest influence on Deco was the excavation of the tomb of King Tut in 1922. When the world saw what was hidden in Tut’s burial chamber, it sent just about everyone into a frenzy. Pierre Cartier wrote in 1923 that “the discovery of the tomb will bring some sweeping changes in fashion jewelry.” And he couldn’t have been more right. “Egyptomania” left an indelible mark on all of the major jewelry houses, from Cartier to Van Cleef & Arpels, Boucheron and Georges Fouquet. (Cartier created some of the most iconic jewelry designs that defined this era.)
While a lot of Art Deco jewelry was black and white — the black coming from the use of onyx or black enamel and the white from rock crystal and diamonds — there is plenty of color in jewelry of the era. A perfect accent to diamonds in platinum settings were blue sapphires, emeralds and rubies, and these stones were also used in combination with each other.
Many designers employed coral, jade and lapis lazuli, too. In fact, some of the most important avant-garde jewelers of the period, like Jean Després and Jean Fouquet (son of Georges), would combine white gold with ebony and malachite for a jolt of color.
A lot of the jewelry produced during this time nodded to current fashion trends, and women often accessorized their accessories. The cloche hat was often accented with geometric diamond brooches or double-clip brooches. Backless evening dresses looked fabulous with sautoir necklaces, and long pearl necklaces that ended with tassels, popular during the Edwardian period, were favored by women everywhere, including Coco Chanel.
Find unique Art Deco necklaces, earrings, bracelets and other jewelry on 1stDibs.
$100Sale Price / item|50% Off
Natural Blue Topaz Tier Cluster Promise Ring for Mother in Solid Silver
Located in New York, NY
Natural Blue Topaz Tier Cluster Promise Ring for Girlfriend in sterling silver. You shall need these cluster ring to make a statement with your look. These cluster ring create a spar...
Topaz, Blue Topaz, Silver, Sterling Silver
$2,896Sale Price|20% Off
6.67Ct Yellow Beryl Diamond Ring in 18 Karat White and Yellow Gold
Located in Hong Kong, HK
Behold the beauty of the 6.67Ct Yellow Beryl and 0.59ct Diamond Ring in 18 Karat White and Yellow Gold. The breathtaking yellow beryl stone shimmers with a rich, golden hue, accentua...
Diamond, Yellow Beryl, 18k Gold, White Gold, Yellow Gold
Art Deco Cabochon Emerald and Diamond Ring
Located in Weston, MA
This delicate Art Deco ring features a vibrant Columbian cabochon emerald in a platinum openwork mount set with diamonds and emeralds. The central stone is positioned between two pa...
Diamond, Emerald, Platinum
Art Deco 7.24Ct Sleeping Beauty Turquoise Mother of Pearl Diamond Ring in 18K
Located in Hong Kong, HK
Celebrate timeless elegance with this extraordinary piece of artistry. This ring features a captivating 7.24-carat turquoise, radiating vibrant hues of blue that evoke tranquility ...
Turquoise, Diamond, Yellow Gold, 18k Gold, White Gold
$3,560Sale Price|20% Off
4.29 Carat Pink Tourmaline Turquoise Malachite Diamond Cocktail Ring
Located in Hong Kong, HK
Dazzle and inspire with this remarkable 4.29 carat tourmaline cocktail ring, a sparkling tribute to the beauty of precious gems. At its heart sits a stunning 4.29-carat pink tourmali...
Turquoise, Tourmaline, Malachite, Diamond, Yellow Gold, 18k Gold
GIA Certified 2.62 Carat Oval Green Alexandrite & Diamond Platinum Vintage Ring
Located in Miami, FL
GIA Certified 2.62 carat oval cut natural green alexandrite measuring 8.6 x 7.5mm is set in a four-prong platinum 900 mounting flanked by stepped baguette diamond clusters on each sh...
Alexandrite, Diamond, Platinum
Dainty Vintage 10K High Set Diamond Cluster Ring Size 6
Located in Webster, SD
This beautiful, vintage, dainty, high-set ring is 10k gold. It features a cluster of 7 round cut, 3mm diamonds with an estimated .21 ctw. These are not high end diamonds but its stil...
Diamond, 10k Gold
Circa 1920s Yellow Gold Wedding Band - VHK#781
Located in Hicksville, NY
Year: 1920s Item Details: Ring Size: 6 (Sizable) Metal Type: 10K Yellow Gold [Hallmarked, and Tested] Weight: .5 grams Band Width: 2.1mm Condition: Excellent Art Deco
Gold, 10k Gold, Yellow Gold
Art Deco Burmese Ruby and Diamond Ring In Platinum, GIA Certified.
Located in New York, NY
This captivating ring centers on a vibrant, natural unheated Burmese ruby of exceptional color and clarity weighing approximately 1.50 carats , the octagonal step cut ruby radiates a...
Diamond, Ruby, Platinum
1931 Nordic Ring 0.9 ct Emerald 0.8 ctw Diamonds 18K Gold Silver ØUS9.75/5.3gr
Located in SE
Nice Renaissance-styled cluster Ring with the carved band, shoulders, and parts of the crown in solid 18ct Yellow Gold. Silver clusters hold natural Emerald stone and 10 rose- cut Di...
Diamond, Emerald, 18k Gold, Silver
Art Deco Style Sugar Loaf Aquamarine Gold Diamonds Black Enamel Cocktail Ring
Located in Bangkok, TH
28 Carat Sugar Loaf Aquamarine cab ( 16,5 mm. x 13 mm.x17 mm.) ,12 round full cut diamonds of 0,05 ct. each,for total diamonds weight of 0,6 carat.4.7 grams of 14 kt. white gold,blac...
Aquamarine, Diamond, Gold, 14k Gold, Enamel
$2,560Sale Price|20% Off
Natural Baguette Diamonds Art Deco Style Band/ Bridal Ring Set in 18K White Gold
By JEWEL HUB
Located in Hong Kong, HK
A very beautiful and wearable Diamonds Bang Ring set in 18K White Gold. The combined weight of the Diamonds is 1.40 carats. Net Gold weight is 9.52 grams. The dimensions of the ring...
Diamond, 18k Gold, White Gold
Art Deco Diamond 9 Carat Gold and Platinum Panel Ring
Located in Chipping Campden, GB
This is an art deco panel ring. Modelled in 9 carat gold and stones set in platinum. The diamond total of this ring is approx 22pts. Ring Size: M 1/2 or 6 1/2 Panel Dimensions: 7x7...
Diamond, Gold, Platinum
Art Deco White Gold Lohengrin Cinderella Band, Size 5.25, 14K
Located in Upland, CA
About This Ring: This Blancard & Co. wedding band features delicate flower engravings encircling the entire band, embodying timeless elegance. Inside, it is stamped with "Cindere...
White Gold
Clyde Duneier CID 10 Carat Blue Topaz Ring 6 Diamonds 14 Karat Gold Cocktail
Located in New York, NY
THIS IS A MAGNIFICENT Clyde Duneier CID, 10 CARAT EMERALD CUT FINE BLUE TOPAZ RING WITH 6 GORGEOUS ROUND BRILLIANT CUT DIAMONDS SET IN A STUNNING DESIGN IN 14 KARAT YELLOW GOLD. TH...
Diamond, Topaz, Blue Topaz, Gold, 14k Gold, Yellow Gold
Antique Platinum, 1920s Art Deco Three Stone Oval Shaped Diamond Ring
Located in Brighton, GB
Antique Oval Diamond Ring Platinum Tested Circa 1920s Step back into the elegance of the 1920s with this exquisite Art Deco diamond ring....
Diamond, Platinum
$680Sale Price|20% Off
Bochic “Orient” Red Ruby & Green Tourmaline Ring Set 18K Yellow Gold & Silver
By Bochic
Located in New York, NY
Bochic “Orient” Red Ruby & Green Tourmaline Ring Set 18K Yellow Gold & Silver Natural Red Ruby - 1,50 carats Natural Green Tourmaline - 1,00 carats Pearls This Ring is from t...
Ruby, Tourmaline, 18k Gold, Gold Plate, Yellow Gold, Silver
Art Deco diamond 18k white gold engagement ring
Located in Beverly Hills, CA
This charming Art Deco diamond engagement ring is a beautiful piece from the 1930’s, crafted in 18k white gold with a delicate and timeless silhouette. At the center rests a transiti...
Diamond, Gold, 18k Gold, White Gold
$1,110Sale Price|20% Off
Vintaged Style 0.82Ct Burma Unheated Ruby ring With Diamond
Located in Singapore, SG
Features : Main Gemstone (1pc) - Ruby Total Carat Weight (1pc) - 0.82Ct Natural Diamonds (18pcs) - 0.16Ct Measurement of ruby - 6.8x6.2mm ( Approx) Cut - Mixed Oval Cut Clarity...
Ruby, Diamond, 18k Gold
8.46 carat Diamond and sapphire target ring, circa 1920.
Located in London, GB
8.46 carat Diamond and sapphire target ring. Centrally set with a cushion shape old mine cut diamond, O-P colour, SI1 clarity with a weight of 8.46 carats, in an open back rubover se...
Diamond, Sapphire, Platinum
$967Sale Price|25% Off
Bochic “Orient” Vintage Ruby Cocktail Ring Set In 18K Gold & Silver with Certifi
By Bochic
Located in New York, NY
Bochic “Orient” Vintage Natural Ruby Cocktail Ring Set In 18K Gold & Silver with Certificate Natural Center Ruby - 8.00 Carat Natural Round Brilliant Rubies Cluster - 12.00 Car...
Ruby, 18k Gold, Silver
Vintage Art Deco Priscilla Wedding Band, 14K & Platinum, Size 6.25
Located in Upland, CA
About This Ring: Upgrade your jewelry collection with this sophisticated Vintage 14K white gold & platinum eternity band by Priscilla. The intricate flower design wraps around the b...
White Gold, Platinum
Art Deco Nine Carat Amethyst Ring 14 Karat White Gold Antique Filigree
Located in New York, NY
This is an extraordinary antique Art Deco Amethyst 14 Karat White Gold Ring with a stunning oval faceted natural Amethyst of approximately 9.2 Carats in a gorgeous filigree open work...
Amethyst, Gold, 14k Gold, White Gold
Important Early Art Deco Trifari Suite
By Alfred Philippe for Trifari
Located in New York, NY
Important Early Art Deco Trifari Suite composed of cuff, dress clip and cocktail ring. Each design centers around a large faux emerald and is studded wit...
Gilt Metal
$100Sale Price / item|50% Off
Tiny Everyday Oval Green Peridot with CZ Gift Ring for Women Gift in 925 Silver
Located in New York, NY
Tiny Everyday Oval Green Peridot with CZ 925 Silver Ring in sterling silver. You shall need these statement ring to make a statement with your look. Each piece features dazzling cubi...
Peridot, Zircon, Silver, Sterling Silver
Art Deco 13 Carat Black Opal Ring 14 Karat Gold Antique Cocktail Statement Ring
Located in New York, NY
Indulge in a stunning Black Opal Antique Art Deco ring with a gorgeous 13.5 Carat Black Opal with radiant fire set in a 14 Karat Gold setting of great beauty. The spectacular oval o...
Opal, Black Opal, Gold, 14k Gold, Rose Gold, Yellow Gold
Antique Alliance Ring 1.3 ctw Diamonds solid 18K Gold Platinum Ø5.25US/2.9gr
Located in SE
Fine old German Alliance 5-stones Ring featuring natural brilliant and old European cut Diamonds mounted in Platinum clusters on solid 18K Yellow Gold band. Openwork crown is 17 mm...
Diamond, 18k Gold, Platinum
Art Deco Old European Diamond 18K White Gold Vintage Stepped Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 0.40 carat - H color with VS2 clarity Bead set in a square form head and flanked by stepped geometric shoulders Accented ...
Diamond, Gold, 18k Gold, White Gold
Art Deco Aquamarine Old Mine Diamond Ring 18 Karat White Gold Engagement Ring
Located in New York, NY
This is a stunning antique Art Deco 2.6 Carat Aquamarine and Old Mine Cut Diamond Ring in an 18 Karat White Gold filigree open work setting of great beauty. The Engagement Ring, Wed...
Aquamarine, Diamond, Gold, White Gold, 18k Gold
Art Deco 0.90 Carat Old European Cut Ring. Diamond Accent Ring Platinum L VS1
Located in New York, NY
**Other Details:** Primary Stone: Diamond Center Diamond Weight: Approximately 0.90 Carats Center Diamond Cut: Old European Cut Center Diamond Color: L Color Center Diamond Clar...
Diamond, Platinum
Bochic “Vintage” Fancy Chocolate, Greenish Diamond 18K Rose Gold Band Ring
By Bochic
Located in New York, NY
Bochic “Vintage” Fancy Chocolate, Greenish Diamond 18K Rose Gold Band Ring Bochic “Vintage” Fancy Greenish Gray Diamond Ring — 6.75 Carats Total — Set in 18K Rose Gold, Circa 1990 ...
Diamond, Rose Gold
Art Deco 2.05 carat diamond platinum geometric ring
Located in Beverly Hills, CA
This exceptional Art Deco diamond ring is a bold and beautifully structured 1930’s design, showcasing the clean geometry and refined craftsmanship that define the era. At its center ...
Diamond, Platinum
Art Deco Asscher Cut Diamond Platinum Engagement Ring GIA 2.9ct D IF
Located in Fairfield, CT
Art Deco Asscher Cut Diamond Platinum Engagement Ring GIA 2.90ct D IF This Art Deco engagement ring is centered by a GIA-certified 2.90-carat Asscher-cut diamond graded D color and ...
Diamond, Platinum
Platinum Art Deco Ring with 3.54 Carat Mixed Cut Diamonds Size 6 H-VS2 GIA
Located in New York, NY
Detailed Description: Elevate your collection with this minimalist and edgy Art Deco platinum ring. Featuring a stunning 2.39 carat Old European Cut diamond at its center, this piece...
Diamond, Platinum
Antique Art Deco 18ct Gold Ruby & Diamond Ring, Circa 1920
Located in Brighton, GB
Vintage Ruby & Diamond Ring 18ct Gold Stamped Circa 1920s A striking Art Deco ring set with six French-cut rubies and seven single-cut diamonds, mounted in platinum. The stones a...
Diamond, Ruby, Gold, 18k Gold
5.33 Carat Turquoise Diamond Yellow Gold Art Deco Style Ring
By Roshe Jewels
Located in Los Angeles, CA
5.33 Carat Turquoise Diamond Yellow Gold Art Deco Style Ring Beautiful Turquoise Diamond Cabochon Art Deco Style Cocktail Ring! The Oval Cut Cabochon Turquoise is 4.81 Carats and ha...
Diamond, Turquoise, 14k Gold, Yellow Gold
Rossella Ugolini 24kt Yellow Gold Plated Rose Quartz Onyx Cocktail Ring
Located in Rome, IT
Rossella Ugolini 24kt Yellow Gold Plated Rose Quartz Onyx Cocktail Ring One of a Kind Cocktail ring. Dimension: Ring Size 6.5 USA Length: 26mm Rose Quartz: 20mm x 20mm Bold and comfo...
Onyx, Quartz, Yellow Gold, Sterling Silver, 24k Gold, Gold Plate
$305Sale Price / item|50% Off
925 Sterling Silver Brilliant Moissanite Engagement Ring for Fiance Gift Jewelry
Located in New York, NY
Moissanite Engagement Ring in sterling silver. You shall need these engagement ring to make a statement with your look. These Moissanite engagement ring create a sparkling, luxurious...
Other, Silver, Sterling Silver
Platinum 2.94 Carat Natural Orange Tourmaline & Diamond Double Halo Ring
Located in Hua Hin, TH
Platinum 2.94 Carat Natural Orange Tourmaline & Diamond Double Halo Ring An exceptional 2.94-carat natural Orange Tourmaline from the renowned Umba River Valley, Tanzania, maste...
Diamond, Tourmaline, Platinum
GIA Certified 1.08 Carat Old Mine Brilliant I S2 Natural Diamond Engagement Ring
Located in Baltimore, MD
GIA Certified 1.08 Carat Old Mine Brilliant I S2 Natural Diamond Engagement Ring GIA report number: 2235888300 Diamond: 1.08 carat old mine brilliant I SI2 natural diamond Metal: 14k...
Diamond, 14k Gold, Yellow Gold
Bochic Orient Vintage Emerlad & Amethyst Ring, 18K Gold & Silver, 1998
By Bochic
Located in New York, NY
Bochic “Orient” Vintage Natural Ruby & Amethyst Ring Set In 18 K Gold & Silver Natural Emeralds 2.00 Carat Natural Amethyst, 13.00 Carats Signed Masterpiece • Exceptional Gem Wei...
Amethyst, 18k Gold, Silver
Art Deco 0.52 Ct Diamond 18k White Gold Filigree Antique Engagement Ring, 1920s
Located in North Attleboro, MA
Unique antique Art Deco diamond 18k white gold engagement ring with a finely detailed shank. The Old European cut diamond solitaire is placed in an octagonal setting. The shoulders and shank have impressive milgrain and openwork filigree that transition to hand-engraved vines down the band. Marked 18K with the maker's hallmark of the capital letter B in a diamond-shaped cartouche. Circa 1920s. Approx. 0.52ct Old European cut solitaire diamond...
Diamond, Gold, 18k Gold, White Gold
Art Deco 1.18CTW Diamond Three Stone Vintage Engagement Ring in Platinum
Located in Boston, MA
Aston Estate Jewelry Presents: An exquisite engagement ring featuring a trio of European-cut diamonds, each meticulously set in an intricate design. The primary diamond is 0.40 car...
Diamond, Platinum
Art Deco .5 Carat Diamond Wedding Engagement Stack Ring 14K White Yellow Gold
Located in New York, NY
This is a stunning Antique Art Deco - Edwardian Diamond Wedding Engagement Stacking Ring set with a spectacular approximately 1/2 Carat Old Mine Cut Diamond with six accent diamonds ...
Diamond, Gold, 14k Gold, White Gold, Yellow Gold
Georg Jensen Carnelian Deco Ring
By Georg Jensen
Located in New York, NY
Elegant Georg Jensen Carnelian Deco Ring from the 1940's. Oval Cabochon carnelian set in Deco setting in 830 grade silver. Marked "Georg Jensen,...
Carnelian, Sterling Silver
$512Sale Price|20% Off
Art Deco Platinum Colombian Emerald Ring, 0.35ct, Women's Size 6.5
Located in Singapore, SG
Features : Main Gemstone - Colombian Emerald Total Carat Weight (14pcs) -0.33Ct Measurement of gemstone - 2.2~2mm Natural diamonds (1pc) - 0.03 (approx) Measurement of gemstone...
Emerald, Platinum
$1,176Sale Price|20% Off
Bochic “Orient” Vintage Diamond, Sapphires & Pearl Ring Set In 18K Gold & Silver
By Bochic
Located in New York, NY
Bochic “Orient” Vintage Diamond, Sapphires & Pearl Ring Set In 18K Gold & Silver Natural Center Blue Sapphire 4.00 Carat Natural Diamonds 1.00 Carats Natural Multi Color...
Diamond, Pearl, Sapphire, Blue Sapphire, Pink Sapphire, 18k Gold, Silver
$100Sale Price / item|50% Off
4.61 Carats Statement Red Garnet Ring in 925 Sterling Silver Christmas Gifts
Located in New York, NY
4.61 Carats Statement Garnet Cluster Ring for Mom in sterling silver. You shall need these cluster ring to make a statement with your look. These cluster ring create a sparkling, lux...
Garnet, Silver, Sterling Silver
Art Deco Aquamarine Solitaire Filigree Vintage Ring in 18 Karat White Gold
Located in Boston, MA
Aston Estate Jewelry Presents: A striking solitaire ring featuring a 4.00 carat oval aquamarine, exuding a serene blue hue. The aquamarine is elegantly set in a detailed 18k white ...
Aquamarine, 18k Gold, White Gold
Art Deco black opal, emerald, and sapphire ring
Located in New York, NY
An Art Deco pear-shaped black opal ring flanked by graduated horizontal rows of alternating buff-top sapphire and emerald, in platinum. France #022715. Atw opal 3.6 cts. * Free ship...
Emerald, Blue Sapphire, Black Opal
Art Deco 14 Karat Gold 0.30 Carat Ruby 0.35 Carat Rose Cut Diamond Cocktail Ring
Located in Vilnius, Vilniaus apskr.
This is an Art Deco cocktail ring crafted in 14K gold. Circa 1930. The piece features: - 1 ruby, round cut, 0.30ct, slpR 5/2, SI - 16 diamonds, rose cut, TW 0.35ct, RW+/W, VS-P1 ...
Diamond, Ruby, Gold, 14k Gold
Engraved Oval Shape Natural Pink Opal Oval Emerald Cab Yellow Gold
Located in Bangkok, TH
Unique ring with a big Engraved Oval Shape Pink Opal ,measuring 28 mm. x 24 mm x 8mm. and weighing 38 Carats with a nice Oval Emerald Cabochon measuring 6 mm x 8 mm set in 14 kt yell...
Emerald, Opal, 14k Gold, Yellow Gold
$1,875Sale Price|25% Off
Art Deco 14k White Gold Hand Engraved Diamond Ring with Old European Cut Diamond
Located in Los Angeles, CA
Specifications: Pre-Owned (Great condition) Metal: 14K Gold Weight: 3.7 Gr Main Stone: .34ct Old European Cut Diamond G VS2 Side stones: 2 triangle sapphires .10pts. Size: 8 US
Diamond, 14k Gold, White Gold
GCS Art Deco Diamond and Onyx Cocktail Ring, 3 Carats, Platinum, circa 1920
Located in Poole, GB
Art Deco diamond and onyx ring, set with two principal old European cut diamonds within a finely pierced platinum mount, enclosed by an oval onyx border and an outer frame of old cut...
Diamond, Onyx, Platinum
Art Deco Style GIA 1.78 Carat Colombian Emerald and Diamond Ring
Located in Nashville, TN
We made this Art Deco style setting and it sat empty for a bit until the right stone came along. And boy, did it come along! This ring is centered by an absolutely luminous 1.78 car...
Diamond, Emerald, Platinum
Bochic Capri Vintage 10ct Yellow & 2ct Blue Sapphire Ring in 18K Gold & Silver
By Bochic
Located in New York, NY
Bochic “Capri” Vintage Natural Yellow Sapphire & Blue Sapphire Ring — 18K Gold & Silver Signed Masterpiece • Exceptional Gem Wei...
Blue Sapphire, Yellow Sapphire, 18k Gold, Silver
Vintage 14K Yellow Gold Gypsy-Set Rhodolite Garnet Ring, 0.92 ct
Located in Palm Desert, CA
This elegant vintage ring is crafted in solid 14-karat yellow gold and features a classic gypsy-style setting with a richly textured bark finish. At its center is a beautifully bezel...
Garnet, Rhodolite, Yellow Gold
Set in 18K Gold, 7.28 carat Morganite, Tanzanites & Diamonds Engagement Ring
By JEWEL HUB
Located in Hong Kong, HK
A very gorgeous and beautiful, modern style, Morganite & Tanzanites Cocktail Ring set in 18K White Gold & natural Diamonds. The weight of the Morganite is 7.28 carats. The weight of ...
Diamond, Morganite, Tanzanite, 18k Gold
1920's Art Deco French Five Stone Diamond Ring 18K Solid Gold Size 7 US
Located in EINDHOVEN, NB
A stunning expression of French Art Deco elegance, this original 1920s ring embodies the era’s refined geometry and timeless glamour. Handcrafted in high-carat gold, it features five...
Diamond, White Gold
Ring with pearl and rose cut diamond 0.20 ct, 18k bicolour gold 8.4 grams
Located in The Hague, ZH
18k bicolour gold ring set with pearl and old cut diamond 0.20 ct J/K -P - ring size US 7.25 - EU 17.5 (55) Detailed description: the top of the ring is 1.3 cm wide weight: 8.4 gr...
Diamond, Pearl, Gold, 18k Gold
Learn about these antique jewelry styles, then choose a design that speaks to you.
Ready to rock? Some of our favorite jewelry designers and dealers share indispensable advice for choosing that most important ring.
Will your beloved be enchanted by an Edwardian ring or a trendy Art Deco piece? We clue you into period styles and tips for finding the perfect ring.