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Sterling Silver Hairy Viking Lapel Pin With Black Helmet and Ruby Eyes
Located in Birmingham, West Midlands
DEAKIN & FRANCIS, Piccadilly Arcade, London Inspired by scandalous Scandinavian Pirates, this Viking Skull lapel pin has been designed to let your wild side stand out! Made from st...
Category

2010s Contemporary Ruby More Jewelry

Materials

Ruby, Sterling Silver

18 Yellow Gold Mother of Pearl Cabochon Rubies Cufflinks
Located in Milano, IT
The front face of these exquisite cufflinks has a striking octagonal shape that is convex, multifaceted, and adorned in the center with a cabochon ruby. Both the front face and the ...
Category

2010s Ruby More Jewelry

Materials

Ruby, 18k Gold, Yellow Gold, Gold

Augis French Plus Hier 18K Yellow Gold Ruby Love Charm Pendant
Located in London, GB
A French 18 karat (18K) yellow gold, diamond and ruby love charm pendant engraved "Je T’aime aujourd’hui plus qu'hier et moins que demain" ("I love you today more than yesterday, les...
Category

20th Century Art Nouveau Ruby More Jewelry

Materials

Ruby, Yellow Gold, Gold, 18k Gold

Gold & Ruby Cancer Crab Charm
Located in New York, NY
Attractive astrological cancer charm, a figural "crab." Nicely detailed. 14K textured yellow gold, with flashing faceted ruby eyes. 1" x 3/4." A very nice representation. Alice ...
Category

1940s Vintage Ruby More Jewelry

Materials

Ruby, Gold, 14k Gold

9.70 Carat Natural Diamond and Ruby 14 Karat Solid White Gold Men's Ring
Located in Los Angeles, CA
9.70 Carats Natural Diamond & Ruby 14K Solid White Gold Men's Ring Amazing looking piece! Total Natural Round Cut Diamonds Weight: Approx. 0.70 Carats (color G-H / Clarity SI...
Category

2010s Ruby More Jewelry

Materials

Diamond, Ruby, 14k Gold, White Gold

Antique Russian Gem set White Enamel Gold Large Locket
Located in Chicago, IL
Circa 1900 Russian 14K Green and Rose Gold Locket, having a slide open feature and set on the inside with a Mirror. Measuring 2 1/4 inch in length 1 1/2 inch wide and 1/4 inch thick....
Category

Early 1900s Antique Ruby More Jewelry

Materials

Diamond, Ruby, 14k Gold

Yellow Gold Ruby and Diamond Dog Brooch, 14k Round Cut .24 Carat Pet Canine Pin
Located in Greensboro, NC
Metal Content: 14k Yellow Gold & 14k White Gold Stone Information: Genuine Rubies Treatment: Heating Color: Red Cut: Round Carat(s): 0.20ctw Natural Diamonds Clarity: VS1 - VS2...
Category

20th Century Ruby More Jewelry

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Santa Gemset Gold Charm
Located in New York, NY
"Santa Claus" with enamel-trimmed hat and coat, applied on an engine-turned larger round disc. Santa is carrying his sack, set with two sapphires, a ruby and an emerald. 14K yellow...
Category

1940s Vintage Ruby More Jewelry

Materials

Emerald, Ruby, Sapphire, 14k Gold

Gold Gemset Snowman Charm
Located in New York, NY
Round charm with textured background. Applied in the center is a figural "snowman" with diamond eyes and bright ruby buttons. 1" in diameter. Cheerful holiday charm. Alice Kwartle...
Category

1940s Vintage Ruby More Jewelry

Materials

Diamond, Ruby, 14k Gold

Large Gold Wishing Well Charm
Located in New York, NY
A round disc. with a rope border. In the center, there is an applied "wishing well" set with a faceted ruby. Engraved around the border: "MAY YOUR WISH COME TRUE." 14K yellow gol...
Category

1940s Vintage Ruby More Jewelry

Materials

Ruby, 14k Gold

Gold Baby and Stork Charm
Located in New York, NY
A lovely charm: a three-dimensional stork, holding a baby in a blanket. The stork is standing on three brilliant faceted rubies. Set on a background of radiating lines, which give...
Category

1940s Vintage Ruby More Jewelry

Materials

Ruby, 14k Gold

Ruby and Diamond Flower White Gold Earrings Pendant and Ring Suite Set
Located in Miami Beach, FL
Beautiful ruby and diamond floral suite made of 14k white gold with ruby petals and diamond frame and accents. Ring: Measures .62" diameter to shoulders .80" and depth .30" US r...
Category

Late 20th Century Ruby More Jewelry

Materials

Diamond, Ruby, White Gold

Art Deco Ruby, Diamond and Mother of Pearl Cufflink and Shirt Stud Dress Set
Located in London, GB
A beautiful Art Deco cufflink and shirt stud dress set, set with diamonds, rubies and mother of pearl. The set is comprised of four beautifully crafted shirt studs and a pair of p...
Category

1920s Art Deco Vintage Ruby More Jewelry

Materials

Diamond, Pearl, Ruby, Gold, Platinum

Antique Diamond and Pearl Apothecary Pin/Brooch Set in Silver on Gold
Located in London, GB
A fabulous antique pearl, diamond and ruby apothecary pin/brooch steeped in a fascinating history. This very wearable brooch is a fantastic example of the skill of the Victorian jew...
Category

Early 1900s Victorian Antique Ruby More Jewelry

Materials

Diamond, Pearl, Ruby, Silver, Gold

Vintage Le Vian Ruby and Diamond Bumble Bee Collar Pin/ Brooch in 18 Karat Gold
Located in Addison, TX
Circa 1940's Le Vian Brooch is the perfect conversation piece. Its unique make allows for it to be worn as a caller pin, or a lapel/ brooch pin all in one. The small bumble bees on t...
Category

1940s Art Deco Vintage Ruby More Jewelry

Materials

Diamond, Ruby, Gold, 18k Gold, Yellow Gold

White Gold Cufflinks Onyx and Rubies with Cylindrical Onyx Toggle
Located in Milano, IT
These exquisite cufflinks is totally made of onyx and feature a striking contrasting color combination produced by the black onyx of the front face shaped as a circle and the cabocho...
Category

2010s Ruby More Jewelry

Materials

Jade, Onyx, Ruby, White Gold, 18k Gold

10.70 Carat Natural Diamond and Ruby 14 Karat Solid Yellow Gold Men's Ring
Located in Los Angeles, CA
10.70 Carats Natural Diamond & Ruby 14K Solid Yellow Gold Men's Ring Amazing looking piece! Total Natural Round Cut Diamonds Weight: Approx. 0.70 Carats (color G-H / Clari...
Category

2010s Ruby More Jewelry

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Art Deco Ruby Cabochon and Pyramid Diamond Tie Pin, ca. 1930s
Located in Idar-Oberstein, DE
Art Deco Ruby Cabochon and Pyramid Diamond Tie Pin, ca. 1930s An elegant French Art Deco pin set with two bright natural Burmese ruby cabochons (ca. 1 carats) and centring an unusua...
Category

1930s Art Deco Vintage Ruby More Jewelry

Materials

Ruby, Diamond, Platinum

Art Deco 5 Carat Ruby and 20ct Diamond Platinum Bracelet with French Hallmarks
Located in Philadelphia, PA
Art Deco platinum ruby and diamond bracelet with French Hallmarks. This bracelet contains 8 baguette shaped rubies totaling approximately 5.00 carats, as well as 140 old European...
Category

Early 20th Century Art Deco Ruby More Jewelry

Materials

Diamond, Ruby, Platinum

14 Karat Gold Waving "American Flag" Pin with Diamonds, Rubies and Sapphires
Located in Los Angeles, CA
14k white gold Waving "American Flag" pin with diamonds, rubies and sapphires Product Details Metal: 14K WHITE GOLD Measurements : Width: 18.8MM Height: 15.8m...
Category

2010s Contemporary Ruby More Jewelry

Materials

Diamond, Ruby, Sapphire, Gold, White Gold

Ruby, Sapphire and Diamond Humming Bird Pin
Located in Banbury, GB
A playful and exquisite hummingbird brooch that can also be used as a tie pin. It is both colourful and exquisitely crafted. The design gives a sense of movement, as though the hummi...
Category

19th Century Victorian Antique Ruby More Jewelry

Materials

Diamond, Ruby, Blue Sapphire, 18k Gold, Yellow Gold

18 Karat Yellow Gold Plate Panther Ruby Onyx Black Enamel 925 Silver Cufflinks
Located in Milano, IT
Silver 925 panther cufflinks 18 karat gold plate embellished by rubies on his eyes and a half sphere in onyx , ears with black enamel. All AVGVSTA jewelry is new and has never been ...
Category

2010s Ruby More Jewelry

Materials

Onyx, Ruby, Silver, Enamel, 18k Gold, Gold Plate, Yellow Gold

GIA Certificate Ruby Cushion Cut 2.01 Carat Loose
Located in Los Angeles, CA
Specifications: gem type: RUBY shape: CUSHION certificate: GIA weight: 2.01 CT size: 7.78 X 6.45 X 4.12 mm QUANTITY: 1 color: RED luster: HIGH o...
Category

2010s Artisan Ruby More Jewelry

Materials

Ruby

126 Diamond Platinum Ruby Dog Brooch Pin Golden Retriever Labrador Lab Setter
Located in New York, NY
A very special Diamond and Platinum Dog Brooch Pin with a Ruby Eye. The wonderful dog is in the form of a Golden Retriever, Labrador, Black Lab, Setter, or? The brooch is Platinum ...
Category

20th Century Contemporary Ruby More Jewelry

Materials

Diamond, Ruby, Platinum

Pair of Chaumet Hairpins with Ruby and Sapphire Set Gold Snakes
Located in Litchfield, CT
Circa 1890s, 18k, retailed by Chaumet, France. Ornamented with sapphire and ruby set 18k gold snakes, these hair pins from the renowned house of Chaumet, are one-of-a-kind delights....
Category

1890s Victorian Antique Ruby More Jewelry

Materials

White Diamond, Ruby, Blue Sapphire, Sapphire, 18k Gold, Yellow Gold, Gold

Tiffany & Co. 18k YG Diamond Ruby Tie Clip
Located in New York, NY
Authentic Tiffany & Co. Tie clip crafted in 18 karat yellow gold with a polished finish set with 11 baguettes shaped rubies weighing approximately 0.23 carats each and 13 round brill...
Category

1960s Vintage Ruby More Jewelry

Materials

Diamond, Ruby, 18k Gold

Diamond, Amethyst and Ruby Teddy Bear Pin Brooch Set in 18 Karat Yellow Gold
Located in London, GB
An adorable diamond, amethyst and ruby teddy bear pin brooch set in 18k yellow gold. The brooch depicts a beautifully crafted sitting down teddy bear which is pavé set throughout on...
Category

2010s Modern Ruby More Jewelry

Materials

Amethyst, Diamond, Ruby, Gold, 18k Gold, Yellow Gold

Gold Gemset Golf Charm
Located in New York, NY
Figural charm: "golf bag" with golf clubs. 14K textured yellow gold. The top, bottom and handle are set with seed pearls. Two faceted prong-set rubies and two diamonds are scat...
Category

1950s Vintage Ruby More Jewelry

Materials

Diamond, Pearl, Ruby, Gold, 14k Gold

Antique 1900 Art Nouveau Ruby 14 Karat Gold Locket Pendant
Located in Munich, Bavaria
This much loved elegant Art Nouveau locket has a fine symetric engraving typical of the period. The central line terminates in a rectangular cut ruby.
Category

Early 1900s Art Nouveau Antique Ruby More Jewelry

Materials

Ruby, Gold, 14k Gold

Vintage Cartier 18 Karat Yellow Gold Turquoise and Ruby Swan or Bird Brooch
Located in Philadelphia, PA
Vintage Cartier 18k yellow gold swan / bird brooch with an oval cabochon turquoise body and faceted ruby eye. 13.90 grams. Measures 1.63" by 1.5". Stamped "Cartier", "Italy" k18" an...
Category

Late 20th Century Ruby More Jewelry

Materials

Ruby, Turquoise, 18k Gold, Yellow Gold

Pearl Ruby Cat Kitten Gold Brooch Pin Retro Mid-Century Modernist
Located in New York, NY
An adorable Cat or Kitten Retro Mid-Century Modern Brooch Pin with a Pearl body and Ruby eye in 10 Karat Gold. The cat has great Mid-Century Modernist style and design! The adorabl...
Category

Mid-20th Century Retro Ruby More Jewelry

Materials

Pearl, Ruby, Gold, 10k Gold, Yellow Gold

18 Karat Yellow Gold Ruby Agate Lapis Lazuli Malachite Turquoise Onyx Cufflinks
Located in Milano, IT
This set of cufflinks is made of three different pair of cylindrical elements that can be mixed and matched to create colorful and elegant combinations. The mounting in 18 karat yell...
Category

2010s Contemporary Ruby More Jewelry

Materials

Agate, Lapis Lazuli, Malachite, Onyx, Ruby, Tiger's Eye, Carnelian, Turq...

18 Karat Yellow Gold Jade and Rubies with Lapis Lazuli Cufflinks
Located in Milano, IT
These exquisite cufflinks feature a striking contrasting color combination produced by the vivid green of the front face in jade, shaped as a circle with a cabochon ruby adorning its...
Category

2010s Ruby More Jewelry

Materials

Agate, Carnelian, Emerald, Hematite, Jade, Lapis Lazuli, Malachite, Onyx...

Floral Pearl Spray Yellow Gold Brooch with Ruby Accents
Located in Mount Kisco, NY
Enjoy this lovely late 1950's eighteen karat (18K) yellow gold brooch with a cascading cluster of lustrous Akoya pearls highlighted with ruby accents artfully gathered by satin eight...
Category

Late 20th Century Ruby More Jewelry

Materials

Pearl, Ruby, 18k Gold, Yellow Gold

18 Karat Yellow Golf Ruby Double Octagonal Carnelian Mother of Pearl Cufflink
Located in Milano, IT
The vivid red of the carnelian gives this pair of cufflinks a warm shade that adds a delicate accent to the octagonal, multifaceted silhouette of both front face and toggle. Each ele...
Category

2010s Ruby More Jewelry

Materials

Carnelian, Ruby, 18k Gold, Yellow Gold

20.84 Carat Coloured Sapphire, Ruby, Tsavorite, Amethyst Chevron Cuff in 18K
Located in Bangkok, TH
Big city nightlife beckons with this 18k black gold, black diamond and coloured gemstone wrist cuff. It is a true statement piece. Expertly crafted to house 20.84 carats of pave'd co...
Category

2010s Modern Ruby More Jewelry

Materials

Amethyst, Black Diamond, Ruby, Sapphire, Blue Sapphire, Tsavorite, 18k Gold

Large Spin-Around Gold This Is Our Life Charm
Located in New York, NY
Large figural heart "This Is Our Life" charm. Heavy gauge 14K gold with an open-work link border. In the center is a three-dimensional spinning heart with engraved flowers. The fi...
Category

1940s Vintage Ruby More Jewelry

Materials

Tourmaline, Diamond, Garnet, Ruby, 14k Gold

Late Victorian 15k Yellow Gold, Silver, Diamond and Ruby Crescent Moon Charm
Located in New York, NY
Late Victorian 15k Yellow Gold, Silver, Diamond and Ruby Crescent Moon Charm Pendant C.1880s Additional Information: Period: Late Victorian Year: c.1880s Material: 15K Yellow Gold, ...
Category

19th Century Late Victorian Antique Ruby More Jewelry

Materials

Ruby, Diamond, Silver, Yellow Gold

Happy Birthday Ruby Gold Charm Pendant
Located in New York, NY
Great, large 14k yellow gold "Happy Birthday" charm. Cut-out 'Happy Birthday" and hearts surround an applied center birthday cake set with a candle and 4 rubies. The side of the cake...
Category

1940s Vintage Ruby More Jewelry

Materials

Ruby, 14k Gold

Antique Victorian Synthetic Ruby and 3.11 Carat Diamond Gold Insect Brooch
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive antique 3.11 carat diamond and synthetic ruby, 15 karat yellow gold, silver set brooch in the form of a winged insect; part of our antique jewelry col...
Category

1880s Victorian Antique Ruby More Jewelry

Materials

Diamond, Ruby, Gold, 15k Gold, Yellow Gold

1880s Victorian Diamond and Ruby Yellow Gold Eagle Brooch
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive 0.34 Ct diamond and 0.04 Ct ruby brooch in 21k and 14k yellow gold; part of our antique jewelry and estate jewelry collections. This fine and impressive Victor...
Category

1880s Victorian Antique Ruby More Jewelry

Materials

Diamond, Ruby, Gold, 14k Gold, Yellow Gold

1915 Art Deco 1 Carat Diamond and Ruby Rooster Brooch Pin, Platinum
Located in Hicksville, NY
Item Details: Metal Type: Platinum Weight: 6.3 Grams Measurements: 1.4 inch length x 1 inch width Diamond Details: Carat: 1 Carat Total Weight Cut: Single Cut Diamonds Color: G Cl...
Category

1910s Art Deco Vintage Ruby More Jewelry

Materials

Diamond, Ruby, Platinum

Floating Ruby Cross Pendant, 14 Karat
Located in Palm Desert, CA
Incogem Floating Ruby Cross Pendant: 14k White Gold. The pendant is handcrafted of recycled 14k yellow gold. Six princess-cut Ruby's medium-dark, pinkish-red, eye-clean rubies float ...
Category

2010s Modern Ruby More Jewelry

Materials

Ruby, 14k Gold, White Gold, Gold

1.00 Carat Total Heart Shaped Ruby & Diamond Pendant in 18 K Yellow Gold
Located in Chicago, IL
Perfect for those who appreciate the incredible red of rubies and the fire of diamonds. This stunning brightly polished 18k yellow gold anniversary pendant features a heart-shaped ru...
Category

2010s Contemporary Ruby More Jewelry

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Antique Victorian Ruby Emerald Diamond 14 Karat Gold Reversible Locket
Located in New York, NY
Rare double sided antique 14k yellow gold locket, circa 1880. One side of the locket is set with a silver and diamond star centering on a ruby and the other side is set with an ident...
Category

1880s High Victorian Antique Ruby More Jewelry

Materials

Ruby, Diamond, Emerald, Gold, 14k Gold

18 Karat Yellow Gold Keshi Pearl Ruby Cufflinks
Located in Milano, IT
These sophisticated cufflinks are timeless and elegant and made with four Keshi pearls in a charming oval shape, two for the front faces and two for the toggles. Each pearl is adorne...
Category

2010s Contemporary Ruby More Jewelry

Materials

Pearl, Ruby, 18k Gold, Yellow Gold

Art Deco Diamond Ruby Book Locket Charm
Located in New York, NY
A jewel: a figural platinum book, set with a center emerald cut diamond. The border is comprised of calibre cut rubies which have exceptional brilliant color. Inside are three "pa...
Category

1920s Art Deco Vintage Ruby More Jewelry

Materials

Diamond, Ruby, Platinum

18 Karat Yellow Gold Lapis Lazuli Oval Ruby Cufflinks
Located in Milano, IT
Elegant pair cufflinks entirely made in lapis lazuli, hand carved with an oval silhouette and embellished by four cabochon of rubies. Mounting in 18 Karat yellow gold. All AVGVSTA j...
Category

2010s Ruby More Jewelry

Materials

Lapis Lazuli, Ruby, 18k Gold, Yellow Gold

Vintage Clown Brooch 18k Yellow Gold Diamond Ruby Sapphire
Located in MIAMI, FL
Beautiful vintage creation, the brooch is crafted in 18k yellow gold and depicts a clown. This unique piece shows functionality as even the hands and leg portion of the brooch dangle...
Category

1970s Retro Vintage Ruby More Jewelry

Materials

Diamond, Ruby, Sapphire, 18k Gold, Yellow Gold

Musical Double Heart Charm
Located in New York, NY
Rare musical 14K charm. Satin gold finish with two applied hearts. One with faceted ruby and one with faceted sapphire. Wind it up and listen to the music. A thoughtful and loving g...
Category

1940s Vintage Ruby More Jewelry

Materials

Ruby, Sapphire, 14k Gold

Rolex Ladies Watch Datjust Ruby Diamond 18 Karat White Gold
Located in Barnsley, GB
Rolex Ladies Watch Datjust Diamond 18 Karat White Gold Custom Pink Rolex stands out with the 4 Ruby stones and with 40 diamonds and can be sent from USA too We can show oth...
Category

21st Century and Contemporary Contemporary Ruby More Jewelry

Materials

Diamond, Ruby, 18k Gold, White Gold

Jumbo Gemset Gold Calendar Locket
Located in New York, NY
Best ever calendar locket: Jumbo size, with names of months engraved. Each month is set with its bright faceted birth stone, within a rayed star. Very solid 14K yellow gold. Ope...
Category

1930s Vintage Ruby More Jewelry

Materials

Alexandrite, Amethyst, Aquamarine, Diamond, Emerald, Garnet, Peridot, Ru...

French Made Turquoise Diamond & Ruby Floral Brooch 18k
Located in MIAMI, FL
Gorgeous French made brooch crafted in 18k yellow gold. This fantastic piece depicts vibrant flowers set with cabochon set turquoise gemstones displaying natural colors. The blue col...
Category

1970s Retro Vintage Ruby More Jewelry

Materials

Diamond, Ruby, Turquoise, 18k Gold

18 Karat Yellow Gold Lapis Lazuli and Rubies Double Square Cufflinks
Located in Milano, IT
These striking cufflinks are entirely made of lapis lazuli, whose striking deep blue shade highlights the classic “fesonato” texture of front face and toggle. Both elements feature a...
Category

2010s Ruby More Jewelry

Materials

Lapis Lazuli, Ruby, 18k Gold, Yellow Gold

Italian Blue Enamel Yellow Gold Sun Fish Brooch Pin w Ruby Accent
Located in Mount Kisco, NY
Animated in vibrant hand painted blue enamel this tiny aquatic creature with it ruby eye is a cheerful accent to any lapel or collar. Italian made of eighteen karat 18K yellow gold ...
Category

1990s Ruby More Jewelry

Materials

Ruby, 18k Gold, Yellow Gold, Enamel

CLARISSA BRONFMAN Custom Design Gold 4 Leaf Clover Disc Pendant
Located in New York, NY
This stunning piece is available by custom order/commission. We have several options regarding design available. We are able to modify this piece, as well as add engraving. Subject...
Category

21st Century and Contemporary Contemporary Ruby More Jewelry

Materials

Diamond, Garnet, Peridot, Ruby, Blue Sapphire, Pink Sapphire, Gold, 14k ...

Bulgari Amethyst, Ruby Desk Clock
Located in New York, NY
BULGARI Amethyst, Ruby Desk Clock An 18k yellow gold quartz desk clock, set with shaped amethyst bordered by rubies, signed Bvlgari. measures approx. 3.5″ in length x 1.65″ in widt...
Category

1980s Vintage Ruby More Jewelry

Materials

Amethyst, Ruby, 18k Gold

Van Cleef & Arpels Art Deco Ruby and Diamond Tie Pin, ca. 1930s
Located in Idar-Oberstein, DE
Van Cleef & Arpels Art Deco Ruby and Diamond Tie Pin, ca. 1930s A beautiful pin by Van Cleef & Arpels from the 1930s in an oval shape, set with mystery-cut ruby surround and two Ass...
Category

1930s Art Deco Vintage Ruby More Jewelry

Materials

Diamond, Ruby, 18k Gold

Vintage and Antique Ruby Jewelry

This deep red gem is the color of heat and passion — vintage and antique ruby jewelry is perfect for those born in the middle of summer.

Rubies are one of the few gemstones that can give diamonds a run for their money. Just consider the Van Cleef & Arpels “scarf” necklace the Duke of Windsor presented to the Duchess on her 40th birthday, in 1936 — set with diamonds and dripping with rubies, a testament to the deep-red gemstone’s power — or the slippers encrusted with 4,600 rubies that Harry Winston made to commemorate the Wizard of Oz’s golden anniversary. July babies have permission to adorn themselves with this beautiful red stone even when it’s not their birthday.

Rubies are considered precious stones — along with diamonds, sapphires and emeralds — and have a hardness of 9.0 on the Mohs Scale, surpassed only by Moissanite and diamonds. They are composed of corundum, a colorless mineral that is also the basic material of sapphires. In the July birthstone, the red of the gemstone — and the various hues seen in sapphires — are produced by the presence of trace elements. In the case of a ruby, this element is chromium. Rubies range in color from vermilion to a violet red. They are also pleochroic, which means that a stone’s hue can vary depending on the direction of viewing. The most sought-after color is pigeon’s blood: pure red with a hint of blue.

Rubies that are hosted in dolomite marble are the most prized: Because the marble is low in iron, so are the rubies, resulting in a more intense color. Rubies found in basalt, which has a higher iron content, are generally darker and less intense.

When shopping for antique and vintage ruby jewelry, remember that the 4Cs of selecting the perfect diamond — color, clarity, cut and carat — also apply to rubies.

According to the Gemological Institute of America, the color of the July birthstone should be a vibrant to slightly purplish red, and that the stone should be clear and inclusion free. Accordingly, the cut should show off its color and clarity. As for the last criterion, fine rubies more than a carat in weight are rare. Often, large rubies are more expensive than diamonds of comparable weights.

Find a collection of ruby necklaces, ruby rings and other accessories on 1stDibs.