Roman Malakov 2.30 Carats Colombian Emerald and Diamond Halo Dangle Earrings
By Roman Malakov
Located in New York, NY
Surrounded by a single row of round brilliant diamonds and suspended on a diamond encrusted lever-back spaced by a beautiful lozenge cut diamond.
Diamond, Emerald, Platinum
Contemporary Colombian Cabochon Emerald & Diamond Drop Earrings 18K White Gold
By SCALA GIOIELLI
Located in Marcianise, IT
The Lozenge Drops: Suspended at the bottom are two striking, diamond-shaped (lozenge) freeform Colombian emerald cabochons.
Diamond, Emerald, 18k Gold, White Gold
11.91 ct. Cuprian Tourmaline and Diamond Earrings in 18K White Gold
By SONYA K.
Located in Brooklyn, NY
Accented by 0.99 carats of D–E color, VS1 clarity lozenge-cut diamonds (GIA-certified), the design achieves a refined architectural balance—elegant yet expressive.
Diamond, Tourmaline, White Gold
Antique Art Deco 0.62 Carat Diamond and 12k Yellow Gold Bracelet Circa 1920
Located in Jesmond, Newcastle Upon Tyne
The platinum set links are each embellished with a central pavé set transitional modern brilliant round cut diamond, in a lozenge-shaped setting. The links articulate via elongated ...
Diamond, Yellow Gold, Platinum
Vintage 18 Karat Yellow Gold and Silver Diamond Cross Pendant
Located in London, GB
A vintage 18 karat yellow gold and silver diamond cross pendant. The cross is composed of 11 claw and grain set old cushion and lozenge shaped diamonds, with small rose cut diamonds...
Diamond, Gold, 18k Gold, Yellow Gold, Silver
0.48 Carat Sapphire 0.09 Carat Diamond 15k Yellow Gold Pendant Circa 1910
Located in Jesmond, Newcastle Upon Tyne
The halo terminal of this Edwardian pendant suspends from an articulated linear drop, ornamented with a collet set Old European round cut diamond amidst a lozenge-shaped frame. The ...
Diamond, Sapphire, Yellow Gold
Modern Brazilian Aquamarine 18 Karat White Gold Diamonds Drop Earrings
By SCALA GIOIELLI
Located in Marcianise, IT
Suspended from an architectural 18-karat white gold top, the earrings feature a sequence of geometric elements—including a diamond-set lozenge/rhombus motif and subtle linear accents...
Aquamarine, Diamond, 18k Gold, White Gold
3.95 ct. Lagoon Tourmaline and Diamond Ring in 18K White Gold
By SONYA K.
Located in Brooklyn, NY
The central stone is flanked on each side by four colorless lozenge-cut diamonds (totaling 0.50 ct), creating a sculptural silhouette that feels both delicate and architectural.
Diamond, Tourmaline, 18k Gold, White Gold
Laura Munder 18K Gold Mandarin Garnet & Diamond Pendant w/ Adjustable Rolo Chain
By Laura Munder
Located in Montclair, NJ
--Stone(s):-- (3) Natural Genuine Mandarin Garnet - Tumbled Cut - Prong & Wire Set - Vivid Orange Color - 13x10.2mm, 18.2x8.1mm & 19.9x16.5mm (approx.) (2) Natural Genuine Diamonds -...
Diamond, Garnet, Mandarin Garnet, 18k Gold, Yellow Gold
19th Century Sapphire Diamond 18 Karat Rose Gold 3 Rings Ring
Located in Poitiers, FR
Sublime and authentic antique ring, it is set on 3 openwork rings, two round sapphires and a cushion- cut diamond. On both sides, on each of the rings, is set a rose-cut diamond and ...
Diamond, Sapphire, Blue Sapphire, Gold, 18k Gold, Rose Gold
$50,000Sale Price|20% Off
Vintage 24 Carat Cabochon Cut Jadeite Jade & Round Cut Diamond Halo Ring
By Gad & Co.
Located in Miami, FL
Item Details: - Type: Ring - Metal: 18K White Gold - Weight: 14.39 grams - Style: Art Noveau - Setting: Prong - Size: 7 Center Stone Details: - Type: Jade - Carat: 24.04 - Cut: Cabo...
Diamond, Jade, 18k Gold, White Gold
Rare Antique Allegory of Love Diamond Three Color 18K Gold Oval Box, Circa 1800
Located in New York, NY
The top of the box is centered by a large rose in a diamond shaped lozenge, flanked by rose bouquets.
Diamond, Gold, 18k Gold, Rose Gold, Yellow Gold
Antique Art Deco 1920s3.00 Carat Bow Brooch with Emeralds
Located in New York, NY
Finely crafted in platinum with a Lozenge cut Diamond and Old European cut Diamonds weighing a total of approximately 3.00 carats, as well as accenting Emeralds.
Diamond, Emerald, Platinum
GRS Certified 50.11 Carat Cushion No Heat Sri Lanka Blue Sapphire Ring
By Gad & Co.
Located in Miami, FL
Item Details: Type: Statement Ring Metal: 18K White Gold Weight: 16.38 grams Setting: Prong Ring Size: 6.5 Open Back _______________________ Center Stone Details: Type: Natural S...
Diamond, White Diamond, Sapphire, Gold, 18k Gold, White Gold
Tiffany & Co. Schlumberger 18 Karat Yellow Gold Red Enamel Bracelet
By Jean Schlumberger for Tiffany & Co.
Located in Philadelphia, PA
Schlumberger Dot Losange bracelet is masterfully crafted in 18k yellow gold, featuring vibrant red paillonné enamel accented with alternating raised gold dots and diamond-shaped loze...
18k Gold, Yellow Gold, Enamel
Art Deco French Steel and Gold Box with Sapphires, French Hallmarks, circa 1930
Located in Tucson, AZ
French hallmarks appear on the rim, including a diamond-shaped (lozenge) maker's mark, a traditional French format for registering goldsmiths and metalworkers.
Sapphire, Gold
Antique Etruscan Revival Patinated 14K Yellow Gold Pendant / Brooch
Located in New York, NY
Exquisitely detailed antique Etruscan Revival patinated 14K yellow gold pendant / brooch 19th Century Featuring superb granulation and twisted wire work with the central decorative e...
14k Gold, Yellow Gold
Faberge Ruby Sapphire Diamond Gold Lozenge-Shaped Brooch
By Fabergé
Located in London, GB
A Faberge ruby, sapphire and diamond lozenge-shaped brooch, with a white fluted baton-shaped motif set with a cabochon-cut sapphire and ruby at finials, with rose-cut diamond collars...
Diamond, Ruby, Blue Sapphire, Yellow Gold
An aquamarine and diamond brooch by Hennell, 9x6cm, 55.9 grams
By Robert Hennell
Located in London, GB
An impressive aquamarine and diamond brooch by Hennell, the rectangular radiant-cut aquamarine weighing 66.02 carats, within a diamond-set lozenge-shaped frame of scroll design with ...
Aquamarine, 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.