Rooted in centuries of history of adornment dating back to the ancient world, modern jewelry reimagines traditional techniques, forms and materials for expressive new pieces. As opposed to contemporary jewelry, which responds to the moment in which it was created, modern jewelry often describes designs from the 20th to 21st centuries that reflect movements and trends in visual culture.
Modern jewelry emerged from the 19th-century shift away from jewelry indicating rank or social status. The Industrial Revolution allowed machine-made jewelry using electric gold plating, metal alloys and imitation stones, making beautiful jewelry widely accessible. Although mass production deemphasized the materials of the jewelry, the vision of the designer remained important, something that would be furthered in the 1960s with what’s known as the “critique of preciousness.”
A design fair called the “Exposition Internationale des Arts Décoratifs et Industriels Modernes” brought global attention to the Art Deco style in 1925 and gathered a mix of jewelry artists alongside master jewelers like Van Cleef & Arpels, Mauboussin and Boucheron. Art Deco designs from Cartier and Van Cleef & Arpels unconventionally mixed gemstones like placing rock crystals next to diamonds while borrowing motifs from eclectic sources including Asian lacquer and Persian carpets. Among Cartier’s foremost design preoccupations at the time were high-contrast color combinations and crisp, geometric forms and patterns. In the early 20th century, modernist jewelers like Margaret De Patta and artists such as Alexander Calder — who is better known for his kinetic sculptures than his provocative jewelry — explored sculptural metalwork in which geometric shapes and lines were preferred over elaborate ornamentation.
Many of the innovations in modern jewelry were propelled by women designers such as Wendy Ramshaw, who used paper to craft her accessories in the 1960s. During the 1970s, Elsa Peretti created day-to-night pieces for Tiffany & Co. while designers like Lea Stein experimented with layering plastic, a material that had been employed in jewelry since the mid-19th century and had expanded into Bakelite, acrylics and other unique materials.
Find a collection of modern watches, bracelets, engagement rings, necklaces, earrings and other jewelry on 1stDibs.
$200Sale Price|20% Off
South Sea Pearl with Tiny Garnet Heart Earrings in 14K Solid Yellow Gold
Located in Naples, NY
Cute little South Sea Pearl (11mm) earrings with Garnet Heart! Gorgeous 14k Solid Yellow Gold Bezel station Garnet charm pendant in LOVE ❤ heart shape! White South Seal Pearl size i...
Garnet, South Sea Pearl, 14k Gold
$1,166Sale Price / item|55% Off
Peridot 14k gold earrings
Located in Istanbul, TR
Peridot 14k gold earrings. Green gemstone earrings. Casual earrings with natural gemstones. Metal: 14k gold Weight: 3 gr Gemstones: peridot, green color, pear cut, 8x6mm Side gemst...
Peridot, Topaz, Gold
$540Sale Price / item|50% Off
Pear Peridot silver, gold earrings
Located in Istanbul, TR
Peridot silver, gold earrings. Green gemstone earrings. Casual earrings with natural gemstones. Metal: 925 silver + 14k gold plating over Weight: 4 gr Gemstones: peridot, green col...
Peridot, Topaz, Gold, Silver
$1,166Sale Price / item|55% Off
Garnet 14k gold earrings
Located in Istanbul, TR
Garnet 14k gold earrings. Red gemstone earrings. Casual earrings with natural gemstones. Metal: 14k gold Weight: 3 gr Gemstones: garnet, red color, pear cut, 8x6mm Side gemstones:...
Garnet, Topaz, Gold
$534Sale Price / item|50% Off
Silver, gold Lily flower earrings with rose quartz briolettes
Located in Istanbul, TR
Silver, gold Lily flower earrings with pink quartz briolettes. Lily flower earrings. Pink quartz earrings. White flower wedding earrings. Metal: silver 925 + 14k gold plating over...
Quartz, Gold Plate, Silver
$1,166Sale Price / item|40% Off
Amethyst 14k gold earrings
Located in Istanbul, TR
Amethyst 14k gold earrings. Purple gemstone earrings. Casual earrings with natural gemstones. Metal: 14k gold Weight: 3 gr Gemstones amethyst, purple, pear cut,8x6mm side gemstone...
Amethyst, Gold, 14k Gold
$1,166Sale Price / item|55% Off
Citrine 14k gold earrings
Located in Istanbul, TR
Citrine 14k gold earrings. Yellow gemstone earrings. Casual earrings with natural gemstones. Metal: 14k gold Weight: 3 gr Gemstones: citrine, yellow color, pear cut, 8x6mm Side gem...
Citrine, Topaz, Gold
$504Sale Price / item|50% Off
Citrine and peridot silver, gold earrings
Located in Istanbul, TR
Citrine and peridot silver, gold earrings. Yellow and green gemstones earrings. Casual earrings with natural gemstones. Metal: 925 silver + 14k gold plating over Weight: 3 gr Gemst...
Citrine, Peridot, Gold, Gold Plate, Silver
$1,123Sale Price / item|35% Off
Citrine and peridot 14k gold earrings
Located in Istanbul, TR
Citrine and peridot 14k gold earrings. Yellow and green gemstones earrings. Casual earrings with natural gemstones. Metal: 14k gold Weight: 3 gr Gemstones peridot, olive green, ova...
Citrine, Peridot, Gold, 14k Gold
$480Sale Price / item|60% Off
Garnet and amethyst silver earrings
Located in Istanbul, TR
Garnet and amethyst 14k gold earrings. Red and purple gemstones earrings. Casual earrings with natural gemstones. Metal: silver + 14k gold plate Weight: 4 gr Gemstones amethyst, pu...
Amethyst, Garnet, Gold Plate, Silver
$1,123Sale Price / item|35% Off
Topaz and amethyst 14k gold earrings
Located in Istanbul, TR
Topaz and amethyst 14k gold earrings. Red and purple gemstones earrings. Casual earrings with natural gemstones. Metal: 14k gold Weight: 3 gr Gemstones amethyst, purple, oval cut, ...
Amethyst, Topaz, Blue Topaz, Gold, 14k Gold
14K Italian Yellow Gold Twist Dangle Earrings 2 Inch by Milor
Located in New York, NY
Marked “14KT Italy Milor” Weight: 2.1g Measurements: Approx. 2.00" L x 0.64" W Pre-owned These 14K Italian Yellow Gold Twist Dangle Earrings offer the elegance and fluidity that It...
Gold, 14k Gold, Yellow Gold
$480Sale Price / item|60% Off
Topaz and amethyst earrings
Located in Istanbul, TR
Topaz and amethyst 925 silver earrings. Red and purple gemstones earrings. Casual earrings with natural gemstones. Metal: 925 silver + 14k gold plating over Weight: 3 gr Gemstones ...
Amethyst, Topaz, Blue Topaz, Gold Plate, Sterling Silver
$360Sale Price / item|50% Off
Painted Ocean Sunset Mother of Pearl Drop Earrings with amethyst briolettes
Located in Istanbul, TR
Painted Ocean Sunset Mother of Pearl Drop Earrings with amethyst briolettes 925 Silver Gold Plated with Amethyst Briolettes Miniature Ocean Art Jewelry Gift for Her Capture the b...
Amethyst, Pearl, Gold Plate, Silver
$1,560Sale Price / item|35% Off
Pear moissanite drop bow earrings studs in 14k gold
Located in Istanbul, TR
Pear Drop Moissanites Stud Earrings. Bow earrings studs with moissanites pave in 14k gold. Ribbon Earrings. Bow earrings. Luxury Bow Earrings in Solid Gold. Metal: 14k gold Weight:...
Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold
14K Yellow Gold Diamond and Lapis Lazuli Drop Dangle Earrings
By OGI Ltd
Located in New York, NY
Bold color meets refined elegance in these striking 14K yellow gold long dangle earrings, designed to showcase the enduring appeal of hard-stone jewelry. Each earring features a rich...
Lapis Lazuli, Diamond, Yellow Gold, 14k Gold, Gold
Nina Zhou 5.30 ctw Morganite, Pink Tourmaline and Diamond Pearl Drop Earrings
By Nina Zhou
Located in Rowland Heights, CA
Nina Zhou 5.30ctw Morganite, Pink Tourmaline & Diamond Pearl Drop Earrings explore contrast through tone and texture, pairing softly faceted gemstones with a smooth, luminous fin...
Diamond, Morganite, Tourmaline, Pearl, Freshwater Pearl, 14k Gold, Yello...
Cartier Vintage 18K Yellow and White Gold Oval Door Knocker Earrings
By Cartier
Located in New York, NY
Bold, architectural, and unmistakably Cartier — these vintage oval door knocker earrings in 18-carat yellow and white gold exemplify the house’s mastery of form and proportion. With their sculptural curves and smooth polished finish, they strike a perfect balance between statement and sophistication. Totaling 6.6 grams, they offer luxurious weight and presence while remaining comfortable for all-day wear. The dual-tone gold design reflects Cartier’s refined aesthetic — effortlessly blending warm yellow gold with cool white gold for a timeless contrast that flatters every skin tone. First seen in the Maison’s 1970s and 1980s collections, this bold yet minimalist silhouette has returned to prominence on runways and in fashion editorials, where vintage Cartier pieces are celebrated for their enduring chic. Perfect for day-to-evening elegance, these earrings elevate a tailored blazer, a silk blouse, or a sleek evening dress. They pair beautifully with Cartier’s Trinity or LOVE jewelry, completing a sophisticated ensemble that transitions seamlessly from city days to gala nights. An ideal gift or collectible investment, these earrings embody the craftsmanship and timeless style that have made Cartier a cornerstone of fine jewelry for over a century. Details: Designer: Cartier Style: Oval Door Knocker Earrings Material: 18K yellow and white gold Total Weight: 6.6 grams Design Era: Vintage Estate Condition: Excellent, with Cartier hallmarks Why We Love It: Cartier’s vintage gold earrings...
Gold, 18k Gold, White Gold, Yellow Gold
$360Sale Price / item|50% Off
Ocean-Themed Mother of Pearl Drop Earrings with Topaz Briolette
Located in Istanbul, TR
Ocean-Themed Mother of Pearl Earrings with Topaz Briolette Painted Sea Wave Earrings Mother of Pearl & Topaz Drop Earrings Embrace coastal elegance with these dainty earrings. T...
Pearl, Topaz, Gold Plate, Silver
c1983 Tiffany & Co Chrysalis Earrings 18k Yellow Gold Ribbon Signed Picasso
Located in Torrance, CA
Finely detailed pair of vintage Tiffany & Co Chrysalis earrings crafted in 18k yellow gold. Dating to 1983 the stylized ribbons are crafted in 18k yellow gold. The design is s...
Gold, 18k Gold, Yellow Gold
$360Sale Price / item|50% Off
Purple Iris Flower Painted Mother of Pearl Drop Earrings with Amethyst Briolette
Located in Istanbul, TR
Purple Flower Mother of Pearl Earrings Amethyst Briolette Drop Earrings Purple Iris Flower Painted Mother of Pearl Earrings with Amethyst Briolette Miniature Art Gift for Gardene...
Amethyst, Pearl, Gold Plate, Silver
14K Yellow Gold Diamond and Natural Pink Topaz Dangle Earrings
By OGI Ltd
Located in New York, NY
Crafted with meticulous attention to detail, these 14K yellow gold dangle earrings bring together the radiance of diamonds and the vibrant allure of natural pink topaz. Designed and ...
Diamond, Topaz, Gold, 14k Gold, Yellow Gold
14K Yellow Gold Natural Pink Topaz and Diamond Long Drop Earrings
By OGI Ltd
Located in New York, NY
These refined long drop earrings are crafted in radiant 14K yellow gold and feature four natural pear-shaped pink topaz gemstones, each measuring approximately 10 x 7 mm. The pink to...
Diamond, Topaz, Gold, 14k Gold, Yellow Gold
Marquetry Earrings by Silvia Furmanovich
Located in Virginia Beach, VA
Crafted in radiant 18K yellow gold, these marquetry earrings showcase exceptional artistry and refined elegance. At their center, London blue topaz totaling 8.78 carats captivates wi...
Diamond, Blue Topaz, 18k Gold
GIA 2.08 carat old mine cut diamond drop 18k gold earrings
Located in Beverly Hills, CA
These diamond drop earrings offer a refined interpretation of antique-inspired elegance, centered around the enduring beauty of old mine cut diamonds. Each earring features a charact...
Diamond, Gold, 18k Gold
Bulgari 1990's 18K Gold Stainless Steel Vintage Spiga Tubogas Serpenti Earrings
By Bulgari
Located in Philadelphia, PA
Designed as double j-hoop style earrings deeply grooved with "Serpenti" tubogas Alternating in pattern with yellow gold with stainless steel segments Completed by posts with hinged o...
Gold, 18k Gold, Yellow Gold, Steel, Stainless Steel
Nina Zhou 7.12ctw Aquamrine Pink Sapphire Diamond Double Blossom Drop Earrings
By Nina Zhou
Located in Rowland Heights, CA
Celebrate the beauty of nature’s finest blossoms with the Nina Zhou's Aquamarine Pink Sapphire Double Blossom Drop Earrings. These exquisite drop earrings feature clusters of vibrant...
Aquamarine, Diamond, Pearl, Pink Sapphire, 14k Gold
$1,800 / item
14k Gold Earrings with Pear Emeralds and Diamonds
Located in Istanbul, TR
Emerald and diamonds earrings studs. Pear emerald gold studs. Genuine emerald earrings. May birthstone jewelry. Emerald jewelry gift for her. Genuine 1.2 ct emeralds earrings studs. ...
Diamond, Emerald, 14k Gold
Tiffany & Co. Elsa Peretti Diamond Sterling Mesh Earrings
By Elsa Peretti for Tiffany & Co.
Located in New York, NY
Elegant and sculptural, these authentic Tiffany & Co. earrings are a classic Elsa Peretti design, crafted in sterling silver with her signature fluid mesh construction. Each elon...
Diamond, Sterling Silver
14K White Gold Diamond Circle Drop Earrings with Rare Ruby Briolettes
By OGI Ltd
Located in New York, NY
A masterful display of elegance and rarity, these 14K white gold drop earrings feature two exceptional genuine ruby briolettes weighing a total of 4.47 carats. Expertly faceted to ca...
Diamond, Ruby, Gold, 14k Gold, White Gold
1.38ct White Diamond Drop Earrings in 18K White Gold
Located in Bucharest, Romania
White diamond drop earrings featuring a total diamond weight of approximately 1.38 carats, showcasing brilliant sparkle and timeless elegance. The diamonds are carefully selected for...
White Diamond, White Gold, 18k Gold
Paraiba Diamond Drop Earrings in 18k White Gold
Located in Bucharest, Romania
Paraiba tourmaline drop earrings featuring a total of 2.00 carats of vibrant, neon-blue Paraiba tourmalines, prized for their exceptional color and rarity. These elegant long drop ea...
Diamond, Tourmaline, Paraiba, 18k Gold, White Gold
Angara 2.4ct Natural Pear Garnet Leverback Drop Earrings in 14K Gold
By ANGARA INC.
Located in Los Angeles, CA
Product Description: These classic garnet earrings exude sophisticated style. The gemstones are cut and faceted in a pear shape and look alluring in their intense reddish brown. T...
Garnet, Gold, 14k Gold
GIA 2.28 carat old mine cut diamond 18k yellow gold bezel earrings
Located in Beverly Hills, CA
These striking bezel-set diamond earrings celebrate the timeless beauty of antique diamond cutting through a refined modern lens. Each earring features a GIA-certified Old Mine cut d...
Brown Diamond, Gold, 18k Gold, Yellow Gold
Chrysoprase Earrings by Silvia Furmanovich
Located in Virginia Beach, VA
Make a statement with these stunning 18K Yellow Gold Earrings, featuring a harmonious trio of gemstones. Each earring showcases a round brilliant-cut diamond for sparkling elegance, ...
Diamond, Blue Topaz, 18k Gold
$3,324Sale Price / set|20% Off
18k Yellow Gold Diamond Cross Hoop Earrings Set of 3
Located in Diera, Dubai
18k Yellow Gold Diamond Cross Hoop Earrings Set of 3 features three earrings with two of the same size and one smaller than the other two. It has small hoop with cross shape dangling...
Diamond, Gold, 18k Gold, Yellow Gold
Marquetry Earrings by Silvia Furmanovich
Located in Virginia Beach, VA
Crafted in luminous 18K yellow gold, these marquetry mini earrings exemplify fine craftsmanship and timeless elegance. The intricate marquetry design is accented by a richly hued gar...
Diamond, Garnet, 18k Gold
$1,800 / item
14k Gold Earrings with Pear Rubies and Diamonds!
Located in Istanbul, TR
14kt solid white gold earrings with pear natural rubies and diamonds. July birthstone earrings. Metal: 14k solid gold Total weight: 2.3 g. Size: 15.5 x 10 mm. Central stones: Natu...
Diamond, Ruby, 14k Gold
Nina Zhou 5.92 ctw Aquamarine & Diamond Double Blossom Drop Earrings
By Nina Zhou
Located in Rowland Heights, CA
The 5.92 ctw Aquamarine Diamond Double Blossom Drop Earrings radiate a serene elegance, with sky-blue aquamarines arranged in a charming floral design. Each gemstone is carefully set...
Aquamarine, Diamond, 14k Gold, White Gold
Tiffany & Co. 1960's 18 Karat Yellow Gold Vintage Knot Ear-Clip Earrings
Located in Philadelphia, PA
Designed as twisted knots With fluted texture Completed by hinged omega backs Stamped for 18 karat gold Fully signed for Tiffany & Co. Circa: 1960s Measures: 1 x 3/4 inches Total...
Gold, 18k Gold, Yellow Gold
Angara Natural Solitaire Pear 1.3 ct Aquamarine Drop Earrings in 14K Solid Gold
By ANGARA INC.
Located in Los Angeles, CA
About Angara:
At Angara, every piece of jewellery is a handcrafted expression of love and individuality. We design with intention—using vivid coloured gemstones and ethically...
Aquamarine, Gold, 14k Gold
Angara Natural Pear 3.3 ct London Blue Topaz Leverback Drop Earrings in 14K Gold
By ANGARA INC.
Located in Los Angeles, CA
About Angara:
At Angara, every piece of jewellery is a handcrafted expression of love and individuality. We design with intention—using vivid coloured gemstones and ethically...
Blue Topaz, Topaz, Gold, 14k Gold
$2,744Sale Price / set|20% Off
1.14 Carat SI Clarity HI Color Diamond Earrings 14 Karat White Gold Jewelry
Located in Diera, AE
Crafted to celebrate everyday elegance, our jewelry blends timeless design with modern craftsmanship. Each piece is thoughtfully made using high-quality materials, ensuring lasting s...
Diamond, White Gold, Gold, 14k Gold
Lily flower earrings with Topazes and diamonds
Located in Istanbul, TR
Lily flower earrings with topazes and diamonds. Metal: 925 silver Weight: 3.25 g. Size: 21x6mm. Topazes 2 pieces - sky blue color, briolette cut, transparent, 8.5x5.7 mm each, aprx...
Diamond, Topaz, Blue Topaz, Silver
Marquetry Earrings by Silvia Furmanovich
Located in Virginia Beach, VA
Elevate your style with these 18K Yellow Gold Marquetry Earrings, featuring a captivating combination of iolite and diamonds. Expertly crafted in rich 18K yellow gold, the small earr...
Diamond, Iolite, 18k Gold
$1,680Sale Price|60% Off
Diamond Pear Ruby 3.40 Carat Halo Lariat White Gold 1.5 Inch Drop Earrings
By OGI Ltd
Located in New York, NY
Introducing our exquisite Diamond Pear Ruby 3.40 Carat Halo Lariat 14 karat White Gold 1.5 Inch Earrings – a breathtaking fusion of elegance and sophistication. Crafted with precisio...
Diamond, Ruby, Gold, 14k Gold, White Gold
Harry Winston Diamond Cluster Floral Earrings
Located in New York, NY
A striking pair of modern cluster earrings, crafted in 1990 by Harry Winston, featuring a dazzling array of white diamonds totaling 5.2 carats, set in platinum. The design showcases ...
Diamond, Platinum
14K Yellow Gold Princess-Cut Ruby and Diamond Circle Earrings
By OGI Ltd
Located in New York, NY
Add vibrant luxury to your jewelry collection with these exquisite 14K Yellow Gold Circle Earrings, designed with alternating princess-cut diamonds (0.65 carats) and princess-cut rub...
Diamond, Ruby, Gold, 14k Gold, Yellow Gold
$1,440Sale Price / item|40% Off
Pear moissanite drop bow earrings studs in 14k gold
Located in Istanbul, TR
Pear Drop Moissanites Stud Earrings. Ribbon Earrings. Bow earrings. Luxury Bow Earrings in Solid Gold. Metal: 14k gold Weight: 3.5 gr 2 piece (central stone) -moissanite 6x4 mm, p...
Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold
Nina Zhou 4.30 ctw Morganite, Pink Tourmaline and Diamond Cluster Earrings
By Nina Zhou
Located in Rowland Heights, CA
Nina Zhou 4.30ctw Morganite, Pink Tourmaline & Diamond Cluster Earrings are composed with a sense of openness and light, allowing each stone to stand on its own while remaining part ...
Diamond, Morganite, Tourmaline, 14k Gold, Yellow Gold
$14,935Sale Price / set|20% Off
Natural 2.72 Carat SI/H Pear Baguette Diamond Earrings 18 Karat White Gold
Located in Diera, AE
Crafted to celebrate everyday elegance, our jewelry blends timeless design with modern craftsmanship. Each piece is thoughtfully made using high-quality materials, ensuring lasting s...
Diamond, 18k Gold, White Gold
Pearl Diamond Drop Earrings 14 Karat White Gold
Located in Boca Raton, FL
These elegant 14 karat white gold diamond and pearl drop earrings feature two luminous pearls at the top, gracefully suspending diamond-accented drops below. Each earring is adorned ...
Diamond, Pearl, Gold, White Gold
Nina Zhou 5.80ctw Sapphire, Aquamarine and Diamond Cluster Pearl Drop Earrings
By Nina Zhou
Located in Rowland Heights, CA
Discover Nina Zhou 5.80ctw Sapphire, Aquamarine and Diamond Cluster Pearl Convertible Drop Earrings in 18k yellow gold, a masterpiece of craftsmanship and elegance. Meticulously set ...
Aquamarine, Diamond, Pearl, Sapphire, 18k Gold
Marquetry Earrings by Silvia Furmanovich
Located in Virginia Beach, VA
Crafted in luminous 18K yellow gold, these marquetry earrings reflect exceptional artistry and refined elegance. The design features richly colored garnet totaling 6.04 carats, offer...
Diamond, Garnet, Peridot, 18k Gold
$78Sale Price|20% Off
Mixed Metal Oversized Hammered Teardrop Drop Earrings With Swirl Detail, 1980s
Located in McKinney, TX
- Vintage item - Each earring measures 3" tall - Silver and gold tone - Clip on earring backs - Circa 1980s - Estate acquired - Good vintage condition with light wear commensur...
Mixed Metal
$5,106Sale Price / set|20% Off
Pear Cut 2.25 Carat Natural Diamond Drop Earrings 18k White Gold Fine Jewelry
Located in Diera, Dubai
Beautifully adorned with Diamond and handmade vintage design, this Earrings will definitely grab attention. Pair it with any of your regular or special attire and let everyone apprai...
Diamond, Gold, White Gold, 18k Gold
Pink Diamond Drop Earrings, GIA Certified in 18K Gold
Located in Bucharest, Romania
These exquisite GIA-certified pink diamond drop earrings offer a stunning blend of rarity, elegance, and modern sophistication. Set in luxurious 18K gold, each earring showcases a na...
White Diamond, Pink Diamond, 18k Gold
Verdura Swirl diamond Earrings
By Verdura
Located in New York, NY
Verdura Swirl Diamond Earrings As if light itself were caught mid-turn. These sculptural earrings by Verdura distill the house’s modernist elegance into a compact, mesmerizing form...
Diamond, Gold, White Gold
Set in 18K Gold, 3.62 carats, Rubellites, Pink Opals & Diamonds Drop Earrings
By JEWEL HUB
Located in Hong Kong, HK
A very gorgeous and beautiful, modern style, Rubellite & Pink Opal Drop Earrings set in 18K Gold & natural Diamonds. The weight of the Rubellites is 3.62 carats. The weight of the Pi...
Diamond, Opal, Rubelite, 18k Gold
18k yellow gold Manfredi aquamarine and diamond earrings
By Manfredi
Located in AMSTERDAM, NL
A pair of 18k yellow gold earrings signed Manfredi and set with a brilliant cut diamond and a pear drop shaped aquamarine. Hallmarked for 18k gold and Italian workshop stamp. All o...
Aquamarine, Diamond, 18k Gold, Yellow Gold