Jacques & Marcus Diamond Sapphire Ruby Bangle In 18K Gold
Located in New York, NY
DETAILS Maker: Jacques & Marcus Period: 1900 Metal: 18K yellow gold Stones: Old mine-cut diamonds weighing approximately 2.0 carats total; sapphires weighing approximately 1.8 carats...
Diamond, Ruby, Gold, 18k Gold, Yellow Gold
Neiman Marcus French diamond twist rings
By Neiman Marcus
Located in New York, NY
Neiman Marcus, France. Total diamond weight approximately 2.00 carats.
Diamond, Gold, 18k Gold, Platinum
Marcus & Co. diamond bracelet, American, circa 1920.
By Marcus & Co.
Located in London, GB
Marcus & Co. diamond bracelet. Set with two cushion shape old mine diamonds in open back grain settings with a combined approximate weight of 1.20 carats, and further set with se...
Diamond, Platinum
Marcus and Co. diamond brooch, American, circa 1915.
By Marcus & Co.
Located in London, GB
Marcus and Co. diamond brooch. Set to centre with one round old cut diamond in an open back grain setting with an approximate weight of 0.40 carats, further adorned by sixty round mi...
Diamond
$58,500
Marcus & Co. Amethyst Brooch
By Marcus & Co.
Located in New Orleans, LA
In 1884, Marcus left Tiffany to join Jaques and Marcus, a firm in which his son was a partner.
Amethyst, Diamond, Natural Pearl, 18k Gold, Platinum
Marcus and Co. Art Deco onyx and diamond ring
By Marcus & Co.
Located in New York, NY
Marcus & Co. Atw diamonds .30 ct (Old-European cut)
Diamond, Onyx, Platinum
Marcus & Co. Art Deco diamond and sapphire "Escalier" bracelet
By Marcus & Co.
Located in New York, NY
Atw diamonds 9.24 cts, sapphires 13.94 cts. Marcus & Co. #054314 * Free shipping * Includes letter of authenticity for insurance purposes * Please do not hesitate to request a v...
Diamond, Sapphire, Platinum
Marcus Natural Pearl, Diamond and Platinum Necklace, Circa 1920
By Marcus & Co.
Located in London, GB
A Marcus natural pearl, diamond and platinum pendant necklace.
Diamond, Pearl, Natural Pearl, Platinum
Marcus and Co. emerald and yellow diamond ring, American, circa 1895.
By Marcus & Co.
Located in London, GB
Marcus and Co. emerald and yellow diamond ring. Set with an octagonal emerald-cut natural emerald in an open back claw setting with an approximate weight of 2.35 carats, further set ...
Diamond, Yellow Diamond, Emerald, 18k Gold
Marcus & Co. Edwardian Kunzite Pendant Brooch
By Marcus & Co.
Located in New Orleans, LA
In 1884, Marcus left Tiffany to join Jaques and Marcus, a firm in which his son was a partner.
Diamond, Kunzite, White Gold, Platinum
Marcus & Co. GIA 6.35 Carat Diamond Platinum Three-Stone Engagement Ring
By Marcus & Co.
Located in Stamford, CT
Marcus + Co 1920's Art Deco three-stone diamond platinum engagement ring.
Diamond, Platinum
Burma No Heat Ruby and Diamond Three-Stone Ring by Marcus & Co.
By Marcus & Co.
Located in New York, NY
Burma No Heat Ruby and Diamond Three-Stone Ring by Marcus & Co. As if a single ember were held between two stars.
White Diamond, Ruby, Gold, 18k Gold, Platinum
Marcus & Co. Art Deco Diamond 20K Gold Antique Foliate Pendant Station Necklace
By Marcus & Co.
Located in Philadelphia, PA
Comprised of fancy paperclip link chain centering a central pendant drop station Suspending from a row of old European cut diamonds bezel set as surmount Weighing approximately 0.55 ...
Diamond, Gold
Marcus & Co. Art Deco Carved Jade Diamond Platinum Floral Brooch Pendant Clip
By Marcus & Co.
Located in Philadelphia, PA
Centering a pear-shaped jade tablet pierced and carved to depict florals Measuring 31.5 x 18.0 mm - translucent medium green with mottling Prong set in a sweeping platinum frame surr...
Diamond, Jade, Gold, 18k Gold, White Gold, Platinum
$5,600Sale Price|20% Off
Neiman Marcus 1 Carat Diamond Pave U-Hoop Earrings in 14k Yellow Gold
By Neiman Marcus
Located in Chicago, IL
These elegant 1 Carat Diamond pave U-hoop earrings by Neiman Marcus showcase a sophisticated design that effortlessly blends modern luxury with timeless style.
Diamond, Yellow Gold
Art Deco Marcus & Co. Platinum 12 Carat No Heat Oval Sapphire Diamond Ring
By Marcus & Co.
Located in Cape May, NJ
This rare Art Deco Marcus & Co. Platinum 12 Carat No Heat Sapphire Diamond Ring is a true masterpiece that combines timeless elegance with exceptional craftsmanship.
Diamond, Sapphire, Platinum
Neiman Marcus Citrine, Emerald and Peridot 18K White Gold Cross Pendant
By Neiman Marcus
Located in New York, NY
Birnbach is proud to present this custom Neiman Marcus 18K White Gold Cross Pendant, a stunning piece adorned with vibrant gemstones.
Citrine, Diamond, Emerald, Peridot, White Gold
Antique Art Deco Platinum Filigree Blue Sapphire & Diamond Bracelet
By Marcus & Co.
Located in Miami, FL
Hermann Marcus Signed Antique Art Deco Blue Sapphire and Diamond Bracelet in Platinum.
Blue Sapphire, Sapphire, Diamond, Platinum
Retailed by Marcus & Co. Black Onyx Diamond Complete Dress Set
Located in New York, NY
Retailed by Marcus & Co. Black Onyx Diamond Complete Dress Set Round shape platinum with round shape black onyx discs, featuring round-cut bezel-set diamonds of approximately 0.40 c...
Diamond, 18k Gold, Yellow Gold, Platinum
Marcus & Co. Sapphire and Diamond Bow Brooch, American, circa 1935
Located in London, GB
Sapphire and diamond bow brooch by Marcus & Co, American, circa 1935.
Diamond, Sapphire, Platinum
Pair French Antique Rose Cut Diamond 18K Gold Bracelets, Early Marcus & Co.
Located in New York, NY
Fabulous pair of antique French Rose cut and European cut diamond 18K rose gold and silver topped gold bracelets, the diamonds 4.45 TCW, in an early Marcus & Co. leather silk lin...
Diamond, 18k Gold, Rose Gold
MARCUS & CO. 1920 Art-Deco Cufflinks In 18Kt Gold With Calibre Cut Gemstones
Located in Miami, FL
(later Black, Star & Frost), and Tiffany & Co. Marcus & Co. is known for their delicate plique-à-jour enamel pieces in the Art Nouveau style and the diamond jewelry they ...
Diamond, White Diamond, Emerald, Ruby, Sapphire, Blue Sapphire, Gold, Ye...
Diamond Neiman Marcus Button Yellow Gold Earrings
By Neiman Marcus
Located in DALLAS, TX
Neiman Marcus 14 carat yellow gold button clip earrings with 1.00ctw round diamonds. 15.5dwt
Diamond, 14k Gold, Yellow Gold
Unavailable
Marcus & Co. 90 Carats Of Diamonds Necklace
By Marcus & Co.
Located in Chestnut Hill, MA
Stamped Marcus & Co Circa 1970's.
Diamond, 18k Gold, White Gold
MARCUS & CO. Retro Platinum Diamond Engagement Ring 1.01ct
By Marcus & Co.
Located in Narberth, PA
A stunning Marcus & Co. diamond engagement ring from the Retro (ca1940s) era!
Diamond, Platinum
Marcus & Co. Beautiful Art Deco Diamond Leaf Brooch
By Marcus & Co.
Located in New York, NY
Exhibiting a mélange of stylized leaves, this pin is centered around an old cut round and baguette diamonds, all framed by exceptional pavé diamond border. Made by one of the great,...
Diamond, White Diamond
Marcus & Co. Lady's Platinum Diamond Pearl Wristwatch
By Marcus & Co.
Located in NY, NY
Marcus & Co., Belle époque Watch set in Platinum with Natural Pearls and diamonds.
Pearl, Platinum
Marcus & Co Art Deco Diamond Pink Lavender Star Sapphire Platinum Brooch/Pendant
By Marcus & Co.
Located in Santa Rosa, CA
Lyrical and romantic bar pin/pendant featuring a large and rare pink star sapphire with a stunning frame of diamonds and signed Marcus & Co. brooch consisting of approx. a 12.0 mm ro...
Diamond, Star Sapphire, Platinum
Unavailable
W 2.56 in L 1.38 in
Signed Marcus & Co. Natural Pearl & Old European Platinum Crown Brooch
By Marcus & Co.
Located in New York, NY
An early piece from the reign of the iconic luxury jewelry designer, William Marcus, and his company Marcus & Co. The piece features five natural pearls and 5.00 Carats of Old Europe...
Diamond, White Diamond, Natural Pearl, White Gold, Platinum
Marcus & Co. Plique-à-Jour Art Nouveau Amethyst and Pearl Brooch
By Marcus & Co.
Located in Carmel-by-the-Sea, CA
Marcus & Co Plique-à-Jour Art Nouveau Brooch Authentic antique large oval Amethyst brooch with diamond and pearls.
Diamond, Amethyst, Freshwater Pearl, 18k Gold
Marcus Art Deco Sapphire, Diamond and Platinum
Located in Melbourne, Victoria
Marcus Art Deco Ring set to the centre with Ceylon Sapphire of 3.5 cts with a very ornate pierced platinum gallery set with grain set Diamonds of an estimated weight of 1.12 cts.
Diamond, Sapphire, Platinum
Marcus & Co. Art Deco Diamond Platinum Filigree Brooch
Located in Munich, DE
Besides of the "Marcus" signature the brooch has inventory numbers on the back.
Diamond, Platinum
Neiman-Marcus Pair Gold Diamond Cabochon Ruby Earrings
Located in Bedford, NY
Contemporary style pair of earrings signed N-M for Neiman-Marcus- Most likely made in the 1980's- Excellent condition like new- Diamonds total 2 carats Rubies total 1 1/2 to 2 cara...
Diamond, Ruby, 18k Gold
Unavailable
Tanzanite and Diamond Halo Ring in Platinum
By Neiman Marcus
Located in Saint Louis, MO
The arresting deep blue-violet tones of this oval tanzanite, approx. 19ct., make it an remarkable example of its kind. The stunning centerpiece is framed in a regal halo of 16 brilli...
Diamond, Tanzanite, Platinum
Unavailable
Dm 2.56 in
Melie Jewelry Cleopatra & Marcus Bracelet, 14K Gold & Diamond & Oxidized Silver
By Melie Jewelry
Located in Levent, 34
The cuff features Cleopatra's face on one side and Marcus's face on the other, with a 14-karat gold frame and white diamonds adorning the twisted-form bracelet.
Diamond, Yellow Gold, Silver
1970s Neiman Marcus Diamond Gold Platinum Mid Century Dome Ring
By Neiman Marcus
Located in Chicago, IL
Circa 1970 Neiman Marcus 18K yellow Gold and Platinum mid Century Dome Ring, fabricated in separate sections and having a textured finish, the Platinum top is set with numerous Round...
Diamond, 18k Gold, Platinum
Marcus & Co Three-Stone Diamond Ring
By Marcus & Co.
Located in London, GB
Tested platinum, maker's mark 'MARCUS' for Marcus & Co, American, circa 1920. UK size M 1/2 US size 6 1/2 Please note shipping to the United States of America requires the purchaser...
Diamond, Platinum
Marcus & Co. Edwardian Diamond Scarf Pin Brooch
By Marcus & Co.
Located in South Pasadena, CA
Marcus & Co. Edwardian diamond platinum and gold scarf pin brooch circa 1910.
Diamond, 18k Gold, Platinum
Edwardian Marcus & Co. 9.15ct Diamond Cresent Brooch Pin
By Marcus & Co.
Located in Miami, FL
The largest diamond is approximately 1.25cts. Circa 1890 and signed Marcus & Co.
Diamond, White Diamond, 18k Gold, Yellow Gold
Gorgeous Marcus & Co Vibrant Peridot Diamond Gold Necklace
By Marcus & Co.
Located in New York, NY
Gorgeous and delicate 18k gold necklace by Marcus & Co, with bright peridots and approx. 4.00ctw in diamonds.
Diamond, Peridot, Gold
Neiman Marcus Bezel Diamond and Gemstone Cross Pendant
By Neiman Marcus
Located in New York, NY
This Neiman Marcus signed 18kt white gold pendant features an approximately sized 2.50-3.00 carat round brilliant bezel set center diamond surrounded by 13 round brilliant diamonds, ...
Diamond, Emerald, Peridot, 18k Gold
Marcus & Co. Opal Diamond Gold Platinum Brooch Pendant
By Marcus & Co.
Located in New York, NY
An American Art Nouveau 18 karat gold and platinum brooch/pendant with black opal, diamonds and enamel by Marcus & Co. The brooch/pendant has a center cabochon opal and 76 old mine-c...
Diamond, Opal, 18k Gold, Platinum
Marcus & Co Art Nouveau Diamond and Pearl Ring
By Marcus & Co.
Located in New York, NY
An American Art Nouveau 14 karat gold ring with diamonds and natural freshwater pearls. The ring has a 8 old European-cut diamonds with an approximate total weight of .80 carats, 3 ...
Diamond, Cultured Pearl, 14k Gold
Art Nouveau Marcus & Co. Moghul Style Diamond Peridot Ring
By Marcus & Co.
Located in London, GB
A superb enamelled gold & diamond Moghal Style ring by Marcus & Co in the form of a bejewelled Sultan's turban decorated with gold arabesques, 35 Victorian cut diamonds of approximat...
Diamond, Peridot, 18k Gold
Marcus & Co. Natural Burmese Cabochon Star Sapphire Diamond Platinum Ring
By Marcus & Co.
Located in Greenwich, CT
Thank your lucky stars. This incredible Marcus & Co. 12.86 carat, AGL certified, natural Burmese cabochon star sapphire, diamond, and platinum vintage ring will leave you applauding.
Diamond, Star Sapphire, Platinum
Marcus & Co. 15ct Burma Ruby & Old European Cut Diamond Bracelet
By Marcus & Co.
Located in West Palm Beach, FL
Delicately crafted in platinum by the renowned jeweler Marcus & Co., this exceptional Art Deco bracelet dates to the 1920s and exemplifies the firm’s celebrated artistry and elegance.
Diamond, Ruby, Platinum
Edwardian Marcus & Co. Old Mine Cut Diamond and Emerald Bracelet
By Marcus & Co.
Located in Miami, FL
Sensational Marcus & Co. Edwardian bracelet crafted in platinum and 18 karat yellow gold.
Diamond, Emerald, 18k Gold, Yellow Gold, Platinum
Marcus & Co. Art Deco Diamond Moonstone Cabochon Platinum Vintage Bar Brooch
By Marcus & Co.
Located in Philadelphia, PA
Centering an elongated sugarloaf-shaped moonstone cabochon measuring 27.0 x 9.0 mm Translucent colorless in body with white adularescence - bezel set Featuring a pierced arching sur...
Diamond, White Diamond, Moonstone, Platinum
Marcus & Co Art Deco Diamond Violet Star Sapphire Platinum Brooch Pin
By Marcus & Co.
Located in Southampton, PA
Platinum, Diamond and Violet Star Sapphire Brooch Pin by Marcus & Co., With 38 round old European cut gem quality diamonds VVS1 clarity E color total weight approx. 1.5ct 1 oval v...
Diamond, Sapphire, Platinum
Marcus Art Deco Ruby Diamond and Platinum Bar Brooch, Circa 1925
By Marcus & Co.
Located in London, GB
An Art Deco, ruby and diamond bar brooch, by Marcus, set with five, French-cut rubies in the centre, in channel settings, with six, Edwardian-cut diamonds either side in grain settin...
Diamond, Ruby, Platinum
Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.
From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!
There are several factors that set diamonds apart from other stones, and these points are important to our gem education.
Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.
In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).
When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement rings, vintage engagement rings or Art Deco engagement rings.
Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.