Antique & Vintage Gems for Sale in Online Auctions

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11.65ct Brazilian Deep Purple Amethyst Emerald Cut No Reserve EGL Certified: a high-clarity, naturally sourced gemstone from Brazil. It displays a rich, intense purple color, often with strong color saturation and high-quality transparency. This large, faceted, rectangular-cut

2026

11.65ct Brazilian Deep Purple Amethyst Emerald Cut No Reserve EGL Certified

California GemstonesOceanside, CA

5.85ct Ceylon Java Plum Sapphire Round Cut No Reserve AGSL Certified: EYE CATCHING Beautiful gemstone. Faceted with a mixed brilliant cut to maximize light reflection, offering high clarity and excellent polish.

2026

5.85ct Ceylon Java Plum Sapphire Round Cut No Reserve AGSL Certified

California GemstonesOceanside, CA

3ct Ceylon Green Sapphire Round Cut No Reserve GIE Certified: Excellent Clarity. High-quality, vivid color and brilliant scintillation. Originating from Ceylon, it exhibits a vibrant, lively green and expert faceting.

2026

3ct Ceylon Green Sapphire Round Cut No Reserve GIE Certified

California GemstonesOceanside, CA

3ct Ceylon Green Sapphire Round Cut No Reserve GIE Certified: high-quality gemstone originating from Ceylon, renowned for vibrant, natural color, featuring vivid bluish-green tones. These stones are faceted with a mixed brilliant cut to maximize light reflection

2026

3ct Ceylon Green Sapphire Round Cut No Reserve GIE Certified

California GemstonesOceanside, CA

4.3ct Mozambique Tourmaline Cushion Cut No Reserve AGSL Certified: High-quality, vivid sparkle and incredible scintillation. Mozambique Paraiba typically shows high clarity and, at this size and cut, is highly sought after for luxury jewelryMozambique has become a ma

2026

4.3ct Mozambique Tourmaline Cushion Cut No Reserve AGSL Certified

California GemstonesOceanside, CA

5ct Colombian Emerald Trillion Cut No Reserve GGI Certified: Known for superior, warm, intense green hues, these stones often have natural inclusions and are treated with oil to enhance clarity. It offers a modern, fiery sparkle compared to traditional cuts.

2026

5ct Colombian Emerald Trillion Cut No Reserve GGI Certified

California GemstonesOceanside, CA

Diamond 1ct Heart Cut VVS1 from South Africa No reserve Lab Grown: a premium, high-clarity stone, often featuring colorless or near-colorless grades (D-I) and exceptional "eye-clean" brilliance. Sourced from renowned South African mines, these stones (natural or lab-

2026

Diamond 1ct Heart Cut VVS1 from South Africa No reserve Lab Grown

California GemstonesOceanside, CA

8.9ct Montana Green Sapphire Trillion Cut, No Reserve, EGL Certified: Triangular-shaped gemstone featuring 40-50+ facets for high brilliance. It generally displays a vibrant green tone. Trillion cuts enhance color distribution and light return.

2026

8.9ct Montana Green Sapphire Trillion Cut, No Reserve, EGL Certified

California GemstonesOceanside, CA

5ct Mogok Pigeon Blood Ruby Oval Cut No Reserve AGSL Certified: Top-tier gemstone originating from Myanmar's famed mines. It displays a vivid, intense red hue, described as a velvety or fluorescent glow. These highly prized gems feature superior clarity.

2026

5ct Mogok Pigeon Blood Ruby Oval Cut No Reserve AGSL Certified

California GemstonesOceanside, CA

Large Mozambique Tourmaline 25ct Asscher Cut No Reserve Dark & Moody Gem: A large 25-carat tourmaline in an Asscher cut is a rare and luxurious gemstone, often characterized by its deep color saturation and architectural, geometric facet pattern. At this size, the stone act

2026

Large Mozambique Tourmaline 25ct Asscher Cut No Reserve Dark & Moody Gem

California GemstonesOceanside, CA

Romantic Cut Colombian Emerald 9.2ct Heart Cut No Reserve GGL Certified: is an exceptional, high-carat gemstone characterized by its romantic shape, intense green color, and significant size. Colombian emeralds are world-renowned for their superior quality, often exhibitin

2026

Romantic Cut Colombian Emerald 9.2ct Heart Cut No Reserve GGL Certified

California GemstonesOceanside, CA

10.15ct Brazilian Teal Tourmaline Trillion Cut No Reserve GGL Certified: high-carat gemstone characterized by an intense blend of blue and green, with strong color saturation. Sourced from Brazil, these stones are renowned for high clarity and superior, fiery sparkle due t

2026

10.15ct Brazilian Teal Tourmaline Trillion Cut No Reserve GGL Certified

California GemstonesOceanside, CA

4.35ct Ceylon Java Plum Sapphire, Oval Cut No Reserve AGSL Certified: REAL Sparkler. Java Plum Sapphire is a significant, high-quality gemstone characterized by its rich, violet-purple hue. Its origin in Ceylon, which is renowned for producing exceptionally bright and v

2026

4.35ct Ceylon Java Plum Sapphire, Oval Cut No Reserve AGSL Certified

California GemstonesOceanside, CA

14.05ct Colombian Green high crystal Emerald Brilliant Step No Reserve VG Certified: Characterized by superior transparency ("high crystal") and intense, deep green color. The "brilliant step cut" (a variation of the traditional emerald cut) enhances its "hall of mirrors" luster, typi

2026

14.05ct Colombian Green high crystal Emerald Brilliant Step No Reserve VG Certified

California GemstonesOceanside, CA

Ceylon Blue Sapphire Round Cut 1.05 ct 6mm VVS No Reserve: a premium, vibrant gem originating from Ceylon. Known for high-clarity & quality. This stone display a bright, medium-light "cornflower" blue hue with excellent luster. Round cuts provide superior bri

2026

Ceylon Blue Sapphire Round Cut 1.05 ct 6mm VVS No Reserve

California GemstonesOceanside, CA

Deep Green Tsavorite 5.6ct Radiant cut No Reserve: s high-quality Tsavorite garnets over 5 carats are considered very rare. This combination suggests a, vibrant, and brilliant gem, often sought after for its richforest green color, displaying higher b

2026

Deep Green Tsavorite 5.6ct Radiant cut No Reserve

California GemstonesOceanside, CA

Ceylon Blue Sapphire 4.80ct Oval Cut No Reserve ASGL Certified: Ceylon blue sapphire, particularly in an oval cut, is a significant, high-quality gemstone characterized by a vivid, royal blue color. These Sri Lankan gems are prized for their exceptional brilliance

2026

Ceylon Blue Sapphire 4.80ct Oval Cut No Reserve ASGL Certified

California GemstonesOceanside, CA

Red Ruby 4.45ct Oval Cut from Mozambique No reserve ASGL Certified: Deep blood-red loose gemstone, often featuring high clarity and vibrant saturation typical of its origin. Known for excellent color reflection, these gems are ideal for jewelry, often with minimal tre

2026

Red Ruby 4.45ct Oval Cut from Mozambique No reserve ASGL Certified

California GemstonesOceanside, CA

4ct each 8.65 tcw PAIR Ceylon Orange Sapphire Round Cut Color Changing No Reserve: These gems exhibit a vibrant, warm orange hue tangerine/burnt amber) under daylight. The color-changing characteristic means they shift shades based on lighting, moving to a softer green hue under inc

2026

4ct each 8.65 tcw PAIR Ceylon Orange Sapphire Round Cut Color Changing No Reserve

California GemstonesOceanside, CA

4.35 Carats Multicolor Tourmaline Selection - Natural Loose Gemstones, 2XP: This curated selection of five faceted tourmaline gemstones, weighing a total of 4.35 carats with individual dimensions ranging from 4.5 to 8.4 mm, showcases the extraordinary color diversity for whic

2026

4.35 Carats Multicolor Tourmaline Selection - Natural Loose Gemstones, 2XP

ThousandPlanetHunghom, Kowloon

9.54 Carats Paraiba Blue Topaz Selection - Natural Brazilian Stones, 6-8mm, 94XH: This vivid selection of topaz dazzles in a rare and highly sought-after Paraiba blue hue-an electric, neon turquoise tone reminiscent of tropical waters. With exceptional clarity and precision facetin

2026

9.54 Carats Paraiba Blue Topaz Selection - Natural Brazilian Stones, 6-8mm, 94XH

ThousandPlanetHunghom, Kowloon

5.51 Carats Natural Sleeping Beauty Turquoise Cabochon Parcel - Natural Arizona Stones, 54XP: This curated parcel of five oval cabochon Sleeping Beauty turquoise gems showcases a vivid, uniform sky-blue hue, with subtle natural matrix inclusions that highlight their authentic, unaltered origin

2026

5.51 Carats Natural Sleeping Beauty Turquoise Cabochon Parcel - Natural Arizona Stones, 54XP

ThousandPlanetHunghom, Kowloon

6.29 Carats Natural Sleeping Beauty Turquoise Oval Cabochon Parcel - Natural Arizona Stones, 52XP: This curated parcel of six oval cabochon Sleeping Beauty turquoise gems showcases a vivid, uniform sky-blue hue, with subtle natural matrix veining that highlights their authentic, unaltered origin. T

2026

6.29 Carats Natural Sleeping Beauty Turquoise Oval Cabochon Parcel - Natural Arizona Stones, 52XP

ThousandPlanetHunghom, Kowloon

1912-p Gold Indian Quarter Eagle Near Top Pop! $2 1/2 ms65+ SEGS: 1912-p Near Top Pop! Gold Indian Quarter Eagle $2 1/2 ms65+ SEGS. Many Indian gold specialists consider the 1912 quarter eagle to be underrated in Gem and better condition. The spotlight is usually ho

2026

1912-p Gold Indian Quarter Eagle Near Top Pop! $2 1/2 ms65+ SEGS

Key Date CoinsVoorhees, NJ

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24

Gems Auctions

Limited Edition Beethoven Bust Bronze Sculpture by Thomas - 18" x 19"

Abstract Mosaic Artwork – Daisy Flower

Brass "S Guard" Wood Handled Damascus Bowie Hunting Knife

Hidden Gems: 1,000+ Exceptional Lots

Weatherham Estate Treasures

Starts on:

Cobourg, ON, CA

18K White Gold Kashmir Sapphire Ring with Diamonds

18K White Gold Paraiba ring With Diamonds

18K Gold-Plated 925 Silver Chain with amethyst, topaz and lemon quartz pear shape

Live15

Nile Gems | Fine Jewelry & Gemstones Auction

Nile Jewels Co Ltd

Started:

Bangkok, Krung Thep, TH

GEM RHODONITE ROCK STONE LAPIDARY SPECIMEN

ROCK STONE LAPIDARY SPECIMEN

MIXED AGATE LOT ROCK STONE LAPIDARY SPECIMEN

Estate Antiques Jewelry Rocks Gems A

Col. Christie Hatman Auctioneers

Starts on:

Thayer, MO, US

1 day Left

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