Antique & Vintage Gems for Sale in Online Auctions

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11.55ct Afghanistan Green Tourmaline Pear Cut Super Clarity No Reserve: This 11.55-carat Afghan green tourmaline is a high-quality pear-cut gem, featuring intense, vibrant green hues characteristic of the region. It is described as having "superior" clarity, offering exce

2026

11.55ct Afghanistan Green Tourmaline Pear Cut Super Clarity No Reserve

California GemstonesSan Diego, CA

3ct Sri Lankan Green Sapphire Round Cut GIE Certified: highly durable, and brilliant gemstone. These stones typically feature deep to medium green hues, sometimes with blue undertones. Exhibiting good clarity with high-quality, brilliant faceting that max

2026

3ct Sri Lankan Green Sapphire Round Cut GIE Certified

California GemstonesSan Diego, CA

2.9ct Brazilian Amethyst Octogon Cut No Reserve: Colombian Green Emerald Lot Round Cut 5mm 15pcs

2026

2.9ct Brazilian Amethyst Octogon Cut No Reserve

California GemstonesSan Diego, CA

5.1ct Brazilian DEEP Blue Sapphire Oval Cut No Reserve: Characterized by a rich, dark blue coloration indicative of its origin. Brazilian sapphires are generally darker than their Ceylon counterparts, with strong color saturation. They may exhibit minor na

2026

5.1ct Brazilian DEEP Blue Sapphire Oval Cut No Reserve

California GemstonesSan Diego, CA

3ct Brazilian Blue Green Tourmaline Oval Cut No Reserve GIE Certified: Prized for its intense neon-like glow caused by copper trace elements. It typically displays electric blue-green, cyan, or vivid green colors in an oval cut, designed to maximize brilliance. These gem

2026

3ct Brazilian Blue Green Tourmaline Oval Cut No Reserve GIE Certified

California GemstonesSan Diego, CA

10ct Mozambique Deep Red Ruby Round Cut GGI Certified: highly saturated, large-format gemstone known for its vibrant, intense "blood red" color, superior clarity, and high durability. Sourced from the Montepuez region, these large rubies are typically cut

2026

10ct Mozambique Deep Red Ruby Round Cut GGI Certified

California GemstonesSan Diego, CA

8.22 Carat Beautiful Mozambique Ruby Cushion Cut No Reserve GIE Certified: Untreated red ruby, featuring a vibrant, deep red color often described as blood red. The stone is expertly cut into a cushion cut to maximize its intense sparkle and internal fire.I just can't captur

2026

8.22 Carat Beautiful Mozambique Ruby Cushion Cut No Reserve GIE Certified

California GemstonesSan Diego, CA

4.2ct Blue Spinel Round Cut from Sri Lanka AGSL Certified No reserve: features a brilliant blue hue, high clarity, and excellent durability, found in alluvial deposits. Certified by AGSL, this substantial size suggests a premium investment piece, sourcing for the rare b

2026

4.2ct Blue Spinel Round Cut from Sri Lanka AGSL Certified No reserve

California GemstonesSan Diego, CA

9.8ct Maine USA Sparhawk Teal Tourmaline Trillion Cut No Reserve GGL Certified: Significant specimen of American gemstone history. Sparhawk tourmalines are prized for their unique mint-green-teal color and were discovered at the Sparhawk mine in Poland, Maine, approximately 25–

2026

9.8ct Maine USA Sparhawk Teal Tourmaline Trillion Cut No Reserve GGL Certified

California GemstonesSan Diego, CA

12.10 Carat Deep Purple Raspberry Amethyst Round Cut from Brazil EGL Certified: a high-clarity, round-cut gemstone characterized by a deep, vivid violet hue and excellent, transparency. This untreated, large-carat stone (Mohs hardness 7) is ideal for statement jewelry, offering a

2026

12.10 Carat Deep Purple Raspberry Amethyst Round Cut from Brazil EGL Certified

California GemstonesSan Diego, CA

9.2ct Colombian Emerald Trillion Cut No Reserve GGL Certified: characterized by its triangular shape, intense green color, and superior brilliance. Colombian emeralds are prized for their pure green hues, often with slight blue undertones, and typically display e

2026

9.2ct Colombian Emerald Trillion Cut No Reserve GGL Certified

California GemstonesSan Diego, CA

10.15ct Brazilian Amethyst Emerald Cut No Reserve GGL Certified: a substantial, high-clarity gemstone known for its deep purple color and geometric faceting. Brazilian material is celebrated for its excellent, rich, and consistent color.

2026

10.15ct Brazilian Amethyst Emerald Cut No Reserve GGL Certified

California GemstonesSan Diego, CA

6ct tcw Ruby Round Cut No Reserve Lab Grown: A pair of lab-grown ruby round-cut stones features a vibrant, fiery pidgeon blood red color with excellent clarity. 3ct per stone. These lab-created synthetic corundum gems possess identical chemical,

2026

6ct tcw Ruby Round Cut No Reserve Lab Grown

California GemstonesSan Diego, CA

6 Carats Brazilian Blue Paraiba Tourmaline Pear Cut No Reserve EGL Certified: High-quality example showing extreme clarity. Unheated or treated showing a light original blue. The pear shape is popular to showcase the color and maximize the spread of the crystal. A well-cut ston

2026

6 Carats Brazilian Blue Paraiba Tourmaline Pear Cut No Reserve EGL Certified

California GemstonesSan Diego, CA

17.49ct Ruby Brilliant Cushion Cut No Reserve Lab Grown: A lab-grown ruby cushion cut stone features a vibrant, fiery pidgeon blood red color with excellent clarity. Huge Beautiful stone. Lab-created synthetic corundum gems possess identical chemical, physi

2026

17.49ct Ruby Brilliant Cushion Cut No Reserve Lab Grown

California GemstonesSan Diego, CA

10.05ct Sri Lankan Green Sapphire Round Cut EGL Certified: a highly desirable gemstone, featuring a vibrant, vivid green hue. These high-carat gems are have refined cuts, offering exceptional clarity, brilliant luster, making them ideal for investment or luxu

2026

10.05ct Sri Lankan Green Sapphire Round Cut EGL Certified

California GemstonesSan Diego, CA

8.36ct Colombian Green Emerald Trillion Cut GGI Certified: a highly desirable gemstone, featuring a vibrant, vivid green hue. These high-carat gems are have refined cuts, offering exceptional clarity, brilliant luster, making them ideal for investment or luxu

2026

8.36ct Colombian Green Emerald Trillion Cut GGI Certified

California GemstonesSan Diego, CA

Edison Black Gem Cylinder Phonograph: C reproducer, pressed key, no cover, repro base, new belt, plays. SN-G128852

2026

Edison Black Gem Cylinder Phonograph

Stanton's Auctioneers & RealtorsHastings, MI

Edison Gem Black Cylinder Phonograph: C reproducer, pressed key, small veneer chip on cover. repro base. SN-G131902

2026

Edison Gem Black Cylinder Phonograph

Stanton's Auctioneers & RealtorsHastings, MI

"The Book of the Pearl" First Edition, 1908: Kunz, George Frederick and Charles Hugh Stevenson, "The Book of the Pearl: The History, Art, Science, and Industry of the Queen of Gems", New York: The Century Co., 1908, First Edition. 11.5" L x 8" W

2026

"The Book of the Pearl" First Edition, 1908

Auctions at ShowplaceAstoria, NY

22K YELLOW GOLD CROSS PENDANT WITH GEMS: Cross pendant featuring (1) round green emerald and (4) pear cut dark blue sapphires weighing approximately 1.02 total carats, along with additional smaller green gemstones to sides, set in 22k stampe

2026

22K YELLOW GOLD CROSS PENDANT WITH GEMS

Ahlers & Ogletree Auction GalleryAtlanta, GA

DAVID YURMAN, 3 PENDANTS W/ CENTER GEMS, DIAMONDS: David Yurman. Three large gem bezel set necklace pendants comprising one having a citrine center gemstone, weighing approximately 30 total carats, surrounded by fifty four (54) round brilliant cut dia

2026

DAVID YURMAN, 3 PENDANTS W/ CENTER GEMS, DIAMONDS

Ahlers & Ogletree Auction GalleryAtlanta, GA

SOLD

Vintage 9k Gold Green Tiger Eye Stickpin: Title: Vintage 9k Gold Green Tiger Eye Stickpin Description: Vintage 9k Gold Green Tiger Eye Stickpin No Hallmarked Seen: Tested as 9k Yellow Gold Weighs 2.7 grams Measures Approx. 2.75 x .25 inches D

2026

Vintage 9k Gold Green Tiger Eye Stickpin

Jasper52New York, NY

Loose Diamond - OVAL 1.57ct F VVS2: Loose Diamond - OVAL 1.57ct F VVS2 Source: This is a real non-mined Diamond that has been grown in a lab Shape: OVAL Carats: 1.57 Color: F Clarity: VVS2 Certification: NONE Video:

2026

Loose Diamond - OVAL 1.57ct F VVS2

Mynt AuctionsNew York, NY

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