$15,600Sale Price / item|20% Off
Oscar Heyman Gold & Platinum 1.99tcw All Diamond Eternity Pendant
By Oscar Heyman
Located in New York City, NY
The necklace measures 19 inches and the diameter of the pendant is 21mm.
Diamond, 18k Gold, Platinum, Gold
Georgios Collections 18 Karat White Gold Diamond Multi-gemtone Pendant Necklace
By Georgios Collections Inc
Located in Astoria, NY
S.Georgios designer 18 Karat White Gold Pendant Necklace with Diamonds, Rubies, Sapphires, and Emeralds shaping the Greek Key design, which symbolizes eternity.
Diamond, White Diamond, Emerald, Multi-gemstone, Ruby, Sapphire, Blue Sa...
14k Brilliant '0.3 Carat' White Gold Necklace with Red Colored Stone
Located in Berlin, BE
Adorn yourself with this dazzling 14k white gold necklace that exudes pure elegance and sophistication.
White Gold
Memento All Gold, Single Diamond on Top Butterfly Charm Pendant
By Ri Noor
Located in Houston, TX
Please reach out for addition stone variations or additional customizations to be worn as earrings, bracelets, layered necklaces etc. The options are limitless.
Diamond, Yellow Gold
$1,361Sale Price / item|30% Off
18k Gold Diamond Cluster Necklace Flower Cluster Necklace Minimalist Necklace
By Oshi Jewels
Located in Bangkok, TH
Diamond cluster necklace, Flower cluster necklace, Minimalist necklace, Everyday diamond necklace, beautiful diamond necklace, 18k gold diamond Flower, Bridal necklace, wedding neck...
Diamond, 18k Gold, Rose Gold, White Gold, Yellow Gold
$1,194Sale Price / item|30% Off
14k Gold Diamond Cluster Necklace Flower Cluster Necklace Minimalist Necklace
By Oshi Jewels
Located in Bangkok, TH
Diamond cluster necklace, Flower cluster necklace, Minimalist necklace, Everyday diamond necklace, beautiful diamond necklace, 14k gold diamond Flower, Bridal necklace, wedding neck...
Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold
Garland Collection Solid Gold Small Initial Charm Medallions, All Letters
By Garland Collection
Located in New York, NY
Perfect for wearing alone, piling a few initials on a single chain, adding to a charm necklace or for necklace layering. The bail will be set on the top center for the following ini...
Gold
Garland Collection Solid Gold Statement Initial Charm Medallions - All Letters
By Garland Collection
Located in New York, NY
Perfect for wearing alone to make a Statement or for necklace layering. The bail will be set on the top center for the following initials: The 5mm bail will be set on the top center...
Gold
$543Sale Price / item|20% Off
14k Gold 1.7 mm Diamond Necklace Dainty Solitaire Necklace Bezel Necklace
By Oshi Jewels
Located in Bangkok, TH
Delicate Minimal Necklace made of 14k solid gold available in three colors of gold: Yellow Gold / White Gold / Rose Gold.
Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold
$615Sale Price / item|20% Off
18k Gold 1.7 mm Diamond Necklace Dainty Solitaire Necklace Bezel Necklace
By Oshi Jewels
Located in Bangkok, TH
Delicate Minimal Necklace made of 18k solid gold available in three colors of gold: Yellow Gold / White Gold / Rose Gold.
Diamond, 18k Gold, Rose Gold, White Gold, Yellow Gold
$782Sale Price / item|30% Off
14k Gold Diamond Key Necklace Diamond Faith Necklace
By Oshi Jewels
Located in Bangkok, TH
Diamond key necklace, Diamond faith necklace, Faith key necklace, everyday diamond necklace, gift for daughter, 14k gold Faith necklace, Diamond Key, Clover necklace, Wedding neckla...
Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold
$911Sale Price / item|30% Off
18k Gold Diamond Key Necklace Diamond Faith Necklace
By Oshi Jewels
Located in Bangkok, TH
Diamond key necklace, Diamond faith necklace, Faith key necklace, everyday diamond necklace, gift for daughter, 18k gold Faith necklace, Diamond Key, Clover necklace, Wedding neckla...
Diamond, 18k Gold, Rose Gold, White Gold, Yellow Gold
$680Sale Price / item|30% Off
14k Gold Diamond Love Necklace Minimalist Dainty Necklace
By Oshi Jewels
Located in Bangkok, TH
Love diamond necklace, Minimalist dainty necklace, gift for her, 14K Gold, Everyday necklace, Pave setted diamonds necklace.
Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold
$782Sale Price / item|30% Off
18k Gold Diamond Love Necklace Minimalist Dainty Necklace
By Oshi Jewels
Located in Bangkok, TH
Love diamond necklace, Minimalist dainty necklace, gift for her, 18K Gold, Everyday necklace, Pave setted diamonds necklace.
Diamond, 18k Gold, Rose Gold, White Gold, Yellow Gold
Yellow Gold Diamond Eye Spinner Pendant - 18k Rd .24ctw All-Seeing Eye Moves
Located in Greensboro, NC
Metal Content: 18k Yellow Gold Stone Information Natural Diamonds Carat(s): .24ctw Cut: Round Brilliant Color: F - G Clarity: VS1 - VS2 Total Carats: .24ctw Style: Spinner Theme:...
Diamond, 18k Gold, Yellow Gold
James Avery Retired Y'all Lasso Rope Charm 925 Sterling Silver Pendant HTF RARE
Located in Addison, TX
Details Designer: James Avery Metal: Sterling Silver Purity: 925 Total Weight: 2.4 Grams Style: Pendant / Charm Design: "Y'all" Script with Twisted Lasso Rope Border Theme: Western /...
Silver, Sterling Silver
Memento All Gold, Single Diamond on Top Heart with Pages Charm Pendant
By Ri Noor
Located in Houston, TX
Please reach out for addition stone variations or additional customizations to be worn as earrings, bracelets, layered necklaces etc. The options are limitless.
Memento All Gold, Single Diamond on Top Sun with Pages Charm Pendant
By Ri Noor
Located in Houston, TX
Please reach out for addition stone variations or additional customizations to be worn as earrings, bracelets, layered necklaces etc. The options are limitless.
Memento All Gold, Single Diamond on Top Cloud with Pages Charm Pendant
By Ri Noor
Located in Houston, TX
Please reach out for addition stone variations or additional customizations to be worn as earrings, bracelets, layered necklaces etc. The options are limitless.
$473Sale Price / item|35% Off
14k Gold Trio Diamond Necklace Three Diamond Floating Necklace
By Oshi Jewels
Located in Bangkok, TH
Trio Diamond Necklace is made of 14k solid gold available in three colors of gold, Rose Gold, White Gold, Yellow Gold.
Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold
$533Sale Price / item|35% Off
18k Gold Trio Diamond Necklace Three Diamond Floating Necklace
By Oshi Jewels
Located in Bangkok, TH
Trio Diamond Necklace is made of 18k solid gold available in three colors of gold, Rose Gold, White Gold, Yellow Gold.
Diamond, 18k Gold, Rose Gold, White Gold, Yellow Gold
South Sea pearl Diamond pendant modern 14KT white gold stunning all length adjus
Located in Boca Raton, FL
Stunning drop necklace that can be adjusted to any length! Large south sea pearl with a diamond on top in 14KT white gold.
Diamond, South Sea Pearl, 14k Gold, White Gold
$686Sale Price / item|30% Off
18k Gold Pear Cut Sapphire Solitaire Necklace Genuine Sapphire Necklace
By Oshi Jewels
Located in Bangkok, TH
Pear cut sapphire solitaire necklace, Genuine sapphire necklace, floating sapphire necklace, delicate minimalist jewelry, 18k gold, gift for her Sapphire necklace, Pear cut sapphire...
Sapphire, 18k Gold, Rose Gold, White Gold, Yellow Gold
$609Sale Price / item|30% Off
14k Gold Pear Cut Sapphire Solitaire Necklace Genuine Sapphire Necklace
By Oshi Jewels
Located in Bangkok, TH
Pear cut sapphire solitaire necklace, Genuine sapphire necklace, floating sapphire necklace, delicate minimalist jewelry, 14k gold, gift for her Sapphire necklace, Pear cut sapphire...
Sapphire, 14k Gold, Rose Gold, White Gold, Yellow Gold
$875Sale Price / item|30% Off
18k Gold Diamond Minimalist Cluster Band Necklace Wedding Diamond Necklace
By Oshi Jewels
Located in Bangkok, TH
Diamond cluster band necklace, Unique diamond cluster necklace, Natural brilliant cut diamond, 18k gold, wedding diamond necklace, gift for her, Minimalist diamond necklace diamond ...
Diamond, 18k Gold, Rose Gold, White Gold, Yellow Gold
Diamond Riviera Necklace Graduated 4 Carats Tennis Necklace 14k
By Five Star Jewelry
Located in Austin, TX
The diamonds go all the way around the necklace making it the perfect statement piece. The solid 14 karat yellow gold necklace is lovely by itself or paired with other necklaces!
Diamond, 14k Gold, Yellow Gold
"Window Box" Pendant with Diamonds & Sapphires on 16" Chain, All 14K White Gold
By Eytan Brandes
Located in Sherman Oaks, CA
Weight: The total stone weight is 0.44 carats. The necklace weighs 6.1 grams.
Diamond, White Diamond, Brown Diamond, Sapphire, Gold, 14k Gold, White Gold
"Doily" 0.15 Carat Diamond Rondelle Pendant with Chain, All in 18 Karat Gold
By Eytan Brandes
Located in Sherman Oaks, CA
MEASUREMENTS: Pendant length (including jump ring): 1.0" Pendant width: 0.7"] Pendant thickness: 2.4mm Chain length: 24" Chain thickness: 1.3mm WEIGHTS: Total diamond we...
Diamond, White Diamond, Gold, 18k Gold, Yellow Gold
18k Yellow Gold All Natural Multicolor Fancy and White Diamonds by The Yard Neck
Located in New York, NY
Handmade diamond by the yard necklace crafted in house by our jewelers. Made in 18K yellow gold set with all natural fancy color and white diamonds of different diamond cuts.
Diamond, 18k Gold, Yellow Gold
Natural Diamond Necklace 11.13CT 18KT White Gold Women Statement Necklace
Located in Antwerpen, BE
Introducing the ultimate symbol of timeless elegance: our 18KT White Gold Natural Round Diamond All Round Collar Statement Necklace. The Natural Diamond Necklace of 11.13 CTS is a ma...
Diamond, White Gold, 18k Gold, Rhodium
Sigillum Tourmaline Bronze Necklace
By Giulia Colussi
Located in Milan, IT
Old sigillum antique glass tourmaline mixed color bronze necklace adjustable. All Giulia Colussi jewelry is new and has never been previously owned or worn.
Tourmaline, Bronze
Marina J All Pearl Sautoir & Tassel with Diamond encrusted solid 14k White Gold
By Marina J.
Located in Los Angeles, CA
Classic piece by Marina J. This sautoir is made of multi sized Pearls woven together into a column like design. The white Pearls hold a beautiful luster to them that perfectly match ...
Diamond, Pearl, Gold, 14k Gold, White Gold
$26,432Sale Price|20% Off
Betony Vernon "Body Chain Necklace" Necklace Sterling Silver 925 in Stock
By Betony Vernon
Located in Rome, IT
The lateral chains of the necklace are all detachable and can be worn separately as necklaces or bracelets thanks to the bilateral closures.
Sterling Silver
0.25 Carat Pavé Diamond "Jazz Heart" Pendant with Chain, All in 14K White Gold
By Eytan Brandes
Located in Sherman Oaks, CA
With the chain, the total necklace weight is 4.1 grams.
Diamond, White Diamond, Gold, 14k Gold, White Gold
"Shield" Pendant with Sapphire and Diamonds on Cable Chain, All in White Gold
Located in Sherman Oaks, CA
This cool pendant used to be one of a pair of cool cufflinks. Since the supply of cool cufflinks far outweighs the demand, Eytan used one cufflink to make a ring, and the other to m...
Diamond, White Diamond, Sapphire, Blue Sapphire, Gold, 14k Gold, White Gold
"Boxy Cascade" Diamond Pendant with 28" Italian C-Link Chain, All in 14K Gold
By Eytan Brandes
Located in Sherman Oaks, CA
Measurements: Pendant length (including bale): 1-1/8" Pendant width (at widest point): 5/8" Chain length: 28" Chain thickness: 0.6" Chain width: 1mm Weights: Diamonds: 0...
Diamond, White Diamond, Gold, 14k Gold, Yellow Gold
Black Onyx 14 Karat Gold Bead Necklace 19 Inch Statement Necklace 13mm Beads
Located in New York, NY
This is a dramatic Black Onyx and 14 Karat Yellow Gold Bead Necklace. The stunning necklace has alternating Black Onyx Beads and 14 Karat Yellow Gold Beads.
Onyx, Gold, 14k Gold, Yellow Gold
10 Carat Diamond Tennis Riviera Necklace 10 Carats Tapering Choker Necklace
By Five Star Jewelry
Located in Austin, TX
The diamonds go all the way around the necklace making it the perfect statement piece. The solid 14-karat yellow gold necklace is lovely by itself or paired with other necklaces!
Diamond, 14k Gold, Yellow Gold
Peridot Marquise "Theta" Pendant on 24" Ball Chain, All in 18 Karat Yellow Gold
By Eytan Brandes
Located in Sherman Oaks, CA
A vividly green 1/2 carat peridot sits in a clean little pronged basket mounted at the center of this inverted oval pendant by Eytan Brandes. The resemblance to a lowercase Greek th...
Peridot, Gold, 18k Gold, Yellow Gold
Vintage Turquoise Necklace, c.1970s
Located in London, GB
This wonderfully unique necklace features a total of ten turquoise. Seven of the turquoise are evenly spread along the 17″ long 18 carat yellow gold necklace.
Turquoise, 18k Gold, Yellow Gold
$1,467Sale Price|20% Off
Necklace Grey Pearls Bakelite Claps
Located in Vannes, FR
Necklace Grey Pearls Bakelite Claps This grey baroque pearl necklace is a timeless piece that combines natural charm with refined design.
Edwardian Pearl and Diamond Drop Necklace
Located in London, GB
This is a lovely diamond and pearl necklace from the Edwardian era. The necklace is studded with an array of old cut diamonds with three large natural pearl drops and is suspended on...
Diamond, Pearl, Gold, 18k Gold, Yellow Gold, Silver
White Turquoise Bead Adjustable Choker Necklace
Located in Ridgefield, CT
• All-natural beaded choker necklace. • 14–16” inches adjustable length. • 925 sterling silver hardware finish.
Agate, Sterling Silver
Spring 1995 Chanel Rhinestone CC Necklace/Belt
By Chanel
Located in Toronto, Ontario
Rhinestone set Chanel necklace/belt dating from the Spring 1995 runway collection.
Gilt Metal
$14,960Sale Price|20% Off
Diamond Necklace with Garnet Droplet
Located in New York, NY
In all, this garnet pendant necklace looks impeccably imperial and luxurious.
Diamond, Garnet
$723Sale Price / item|30% Off
14k Gold Bezel Set Diamond Necklace
By Oshi Jewels
Located in Bangkok, TH
Bezel set diamond necklace, Floating diamond necklace, Minimalist diamond necklace, 14k gold, Dainty diamond necklace trio diamond necklace, floating diamond, bezel necklace, weddin...
Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold
$911Sale Price / item|30% Off
18k Gold Diamond Hope Key Necklace
By Oshi Jewels
Located in Bangkok, TH
Diamond key necklace, Diamond hope necklace, Hope key necklace, everyday diamond necklace, gift for daughter, 18k gold Hope necklace, Diamond Key, key necklace, wedding necklace, di...
Diamond, 18k Gold, Rose Gold, White Gold, Yellow Gold
$782Sale Price / item|30% Off
14k Gold Diamond Hope Key Necklace
By Oshi Jewels
Located in Bangkok, TH
Diamond key necklace, Diamond hope necklace, Hope key necklace, everyday diamond necklace, gift for daughter, 14k gold Hope necklace, Diamond Key, key necklace, wedding necklace, di...
Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold
$809Sale Price / item|30% Off
18k Gold Bezel Set Diamond Necklace
By Oshi Jewels
Located in Bangkok, TH
Bezel set diamond necklace, Floating diamond necklace, Minimalist diamond necklace, 14k gold, Dainty diamond necklace trio diamond necklace, floating diamond, bezel necklace, weddin...
Diamond, 18k Gold, Rose Gold, White Gold, Yellow Gold
$861Sale Price / item|30% Off
14k Gold Marquise Cut Diamond Necklace
By Oshi Jewels
Located in Bangkok, TH
Marquise cut diamond necklace, Marquise solitaire necklace with round diamond, genuine diamonds, 14K gold, Gift for her Diamond necklace, Marquise cut, Solitaire necklace, wedding n...
Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold
$928Sale Price / item|30% Off
18k Gold Marquise Cut Diamond Necklace
By Oshi Jewels
Located in Bangkok, TH
Marquise cut diamond necklace, Marquise solitaire necklace with round diamond, genuine diamonds, 18K gold, gift for her Diamond necklace, Marquise cut, solitaire necklace, wedding n...
Diamond, 18k Gold, Rose Gold, White Gold, Yellow Gold
$1,407Sale Price / item|30% Off
18k Gold Big Diamond Baguette Necklace
By Oshi Jewels
Located in Bangkok, TH
Big diamond baguette necklace, wedding diamond necklace, 18k gold, Dainty diamond necklace, Baguette cut diamond pendant, anniversary gift for her Baguette necklace, diamond cluster...
Diamond, 18k Gold, Rose Gold, White Gold, Yellow Gold
$1,259Sale Price / item|30% Off
14k Gold Big Diamond Baguette Necklace
By Oshi Jewels
Located in Bangkok, TH
Big diamond baguette necklace, wedding diamond necklace, 14k gold, Dainty diamond necklace, Baguette cut diamond pendant, anniversary gift for her Baguette necklace, diamond cluster...
Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold
Emilio Jewelry Important Diamond Necklace
By Emilio!
Located in New York, NY
From the Museum Vault at Emilio Jewelry located on New York's iconic Fifth Avenue, A glorious jaw dropping necklace featuring all large important diamonds and a large pear shape at t...
Diamond
$713Sale Price / item|30% Off
18k Gold Diamond Emerald Butterfly Necklace
By Oshi Jewels
Located in Bangkok, TH
Diamond Emerald butterfly necklace, Minimalist Emerald butterfly pendant, Nature lover necklace, 18K Gold, birthday gift for daughter diamond butterfly, Bridal necklace, wedding nec...
Diamond, Emerald, 18k Gold, Rose Gold, White Gold, Yellow Gold
$634Sale Price / item|30% Off
14k Gold Diamond Emerald Butterfly Necklace
By Oshi Jewels
Located in Bangkok, TH
Diamond emerald butterfly necklace, Minimalist emerald butterfly pendant, Nature lover necklace, 14K Gold, birthday gift for daughter diamond butterfly, Bridal necklace, wedding nec...
Diamond, Emerald, 14k Gold, Rose Gold, White Gold, Yellow Gold
$867 / item
0.51 Carat Natural Diamond Oval Necklace
By Morris & David
Located in New York, NY
All Chains of Pendants and Necklaces Can be Requested in 16'' or 18'' Length. .
Diamond, 14k Gold, White Gold
Edwardian Pearl and Diamond Bow Drop Necklace
Located in London, GB
This is an elegant, fun and versatile necklace, which is fit for all occasions. The necklace was masterfully converted from an Edwardian brooch by the antique jewellery restorer Gae...
Diamond, Pearl, Gold, Yellow Gold
14K Yellow Gold Diamond Bezel Tennis Necklace
Located in Great Neck, NY
This 14K yellow gold diamond bezel tennis necklace offers a clean and elegant look that is easy to wear every day.
Diamond, 14k Gold, Yellow Gold
Amethyst Turquoise Carnelian Citrine Vermeille Necklace
By Giulia Colussi
Located in Milan, IT
Amethyst Turquoise Carnelian Citrine Vermeille Necklace. Length 80cm. All Giulia Colussi jewelry is new and has never been previously owned or worn.
Amethyst, Carnelian, Citrine, Turquoise, Gold-filled
Gold is the feel-good metal, the serotonin of jewelry. Wear vintage and antique gold necklaces, watches, gold bracelets or gold rings and you feel happy, you feel dressed, you feel, well, yourself.
Gold, especially yellow gold, with its rich patina and ancient pedigree going back thousands of years, is the steady standby, the well-mannered metal of choice. Any discussion of this lustrous metal comes down to a basic truth: Gold is elementary, my dear. Gold jewelry that couples the mystique of the metal with superb design and craftsmanship achieves the status of an enduring classic. Many luxury houses have given us some of our most treasured and lasting examples of gold jewelry over the years.
Since its founding, in 1837, Tiffany & Co. has built its reputation on its company jewelry as well as its coterie of boutique designers, which has included Jean Schlumberger, Donald Claflin, Angela Cummings and Elsa Peretti. There are numerous gold Tiffany classics worth citing. Some are accented with gemstones, but all stand out for their design and the workmanship displayed.
For the woman who prefers a minimalist look, the Tiffany & Co. twist bangle (thin, slightly ovoid) is stylishly simple. For Cummings devotees, signature pieces feature hard stone inlay, such as her pairs of gold ear clips inlaid with black jade (a play on the classic Chanel black and tan), or bangles whose design recalls ocean waves, with undulating lines of lapis lazuli and mother-of-pearl. And just about any design by the great Jean Schlumberger is by definition a classic.
Even had he eschewed stones and diamonds, Southern-born David Webb would be hailed for the vast arsenal of heavy gold jewelry he designed. Gold, usually hammered or textured in some manner, defines great David Webb jewelry. The self-taught jeweler made very au courant pieces while drawing inspiration from ancient and out-of-the-way sources — East meets West in the commanding gold necklaces made by Webb in the early 1970s. The same could be said for his endlessly varied gold cuffs.
In Europe, many houses have given us gold jewelry that sets the highest standard for excellence, pieces that were highly sought after when they were made and continue to be so.
Numerous designs from Cartier are homages to gold. There are the classic Trinity rings, necklaces and bracelets — trifectas of yellow, white and rose gold. As a testament to the power of love, consider the endurance of the Cartier Love bracelet.
Aldo Cipullo, Cartier’s top in-house designer from the late 1960s into the early ’70s, made history in 1969 with the Love bracelet. Cipullo frequently said that the Love bracelet was born of a sleepless night contemplating a love affair gone wrong and his realization that “the only remnants he possessed of the romance were memories.” He distilled the urge to keep a loved one close into a slim 18-karat gold bangle.
BVLGARI and its coin jewelry, gemme nummarie, hit the jackpot when the line launched in the 1960s. The line has been perennially popular. BVLGARI coin jewelry features ancient Greek and Roman coins embedded in striking gold mounts, usually hung on thick link necklaces of varying lengths. In the 1970s, BVLGARI introduced the Tubogas line, most often made in yellow gold. The Tubogas watches are classics, and then there is the Serpenti, the house's outstanding snake-themed watches and bracelets.
A collection called Monete that incorporated the gold coins is one of several iconic BVLGARI lines that debuted in the 1970s and ’80s, catering to a new generation of empowered women. Just as designers like Halston and Yves Saint Laurent were popularizing fuss-free ready-to-wear fashion for women on the go, BVLGARI offered jewels to be lived in.
Since Van Cleef & Arpels opened its Place Vendôme doors in 1906, collection after collection of jewelry classics have enchanted the public. As predominantly expressed in a honeycomb of gold, there is the Ludo watch and accessories, circa the 1920s, and the golden Zip necklace, 1951, whose ingenious transformation of the traditional zipper was originally proposed by the Duchess of Windsor. Van Cleef's Alhambra, with its Moroccan motif, was introduced in 1968 and from the start its popularity pivoted on royalty and celebrity status. It remains one of VCA’s most popular and collected styles.
Mention must be made of Buccellati, whose name is synonymous with gold so finely spun that it suggests tapestry. The house’s many gold bracelets, typically embellished with a few or many diamonds, signified taste and distinction and are always in favor on the secondary market. Other important mid-20th-century houses known for their gold-themed jewelry include Hermès and Ilias Lalaounis.
Find a stunning collection of vintage and antique gold jewelry on 1stDibs.