Opal Gems

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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

Burmese Ruby 10.9ct Round Cut No Reserve EGL Certified: High-carat, investment-level piece! Originating from the Mong Hsu region in Myanmar. Slightly included "loupe clean". Vivid red , known for high saturation and natural fluorescence.This is a showstopp

2026

Burmese Ruby 10.9ct Round Cut No Reserve EGL Certified

California GemstonesOceanside, CA

Natural Santa Maria Blue Aquamarine 3.5 Ct Round Cut from Brazil: Santa Maria Blue. round-cut natural Aquamarine represents the pinnacle of rarity, boasting the deep, vivid "Double Blue". saturation that is vanishing from the global market. and eye-clean clarity cre

2026

Natural Santa Maria Blue Aquamarine 3.5 Ct Round Cut from Brazil

California GemstonesOceanside, CA

6.95ct Ceylon Java Plum Sapphire Oval Cut No Reserve AGSL Certified: characterized by a distinct purplish-blue color, marketed as a bicolor or color-changing variety. "Java Plum" refers to a deep, rich, purple or violet-purple hue. "Ceylon" sapphires are highly regarde

2026

6.95ct Ceylon Java Plum Sapphire Oval Cut No Reserve AGSL Certified

California GemstonesOceanside, CA

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

Burmese Ruby 7.5ct Ocal Cut No Reserve GGL Certified: Originating from the Mong Hsu region in Myanmar. Slightly included "loupe clean". Vivid red, known for high saturation and natural fluorescence.

2026

Burmese Ruby 7.5ct Ocal Cut No Reserve GGL Certified

California GemstonesOceanside, CA

Green Sapphire 3ct Round Cut from Sri Lanka GIE Certified: Characterized by a crisp, vibrant green hue with excellent clarity (often eye-clean or VVS), colored by iron. These stones feature premium, precise faceting to maximize brilliance and are prized for t

2026

Green Sapphire 3ct Round Cut from Sri Lanka GIE Certified

California GemstonesOceanside, CA

Neon Tourmaline 5.21ct Trillion Cut No Reserve GIE Certified: a rare and highly valuable gemstone known for its vibrant electric blue-green hues. A trillion-cut specimen of this size is a significant collector's item, featuring brilliant neon blue shade, sourced

2026

Neon Tourmaline 5.21ct Trillion Cut No Reserve GIE Certified

California GemstonesOceanside, CA

San Carlos Benitoite 5.15ct Trillion Cut No Reserve EGL Certified: This collectors stone features a brilliant, intense sapphire-blue color with high dispersion (fire higher than diamond), expertly cut into a triangular shape to maximize brilliance, displaying excelle

2026

San Carlos Benitoite 5.15ct Trillion Cut No Reserve EGL Certified

California GemstonesOceanside, CA

Colombian Emerald 9.95ct Oval Cut No Reserve GGL Certified: Features the intense, pure color characteristic of Colombian mines due to high chromium content. Oval cuts offer a brilliant, fiery sparkle while showcasing the deep color, typically with visible inte

2026

Colombian Emerald 9.95ct Oval Cut No Reserve GGL Certified

California GemstonesOceanside, CA

Colombian Emerald 9.5ct Oval Cut No Reserve GGL Certified: Sister stone to Lot 433. Features the intense, pure color characteristic of Colombian mines due to high chromium content. Oval cuts offer a brilliant, fiery sparkle while showcasing the deep color, ty

2026

Colombian Emerald 9.5ct Oval Cut No Reserve GGL Certified

California GemstonesOceanside, CA

Amethyst 10ct Emerald Cut from Brazil No Reserve GGL Certified.: a statement-making gemstone featuring a rectangular, step-cut design that highlights high clarity and rich, purple hues. These stones offer a luxurious, vintage, or Art Deco aesthetic, and is sourced

2026

Amethyst 10ct Emerald Cut from Brazil No Reserve GGL Certified.

California GemstonesOceanside, CA

3.87ct Spessartite Garnet Square Step Cut from Romana CA IGI Certification: A 3.87-carat Spessartite garnet from the Ramona district in California is a highly prized, rare, and historic gemstone. Ramona, particularly the Little Three Mine, was the premier source of fine spess

2026

3.87ct Spessartite Garnet Square Step Cut from Romana CA IGI Certification

California GemstonesOceanside, CA

$13.85ct Mozambique Ruby Round Cut No Reserve GGI Certified: Huge hunk of Ruby! When I first got this in was thrown for a loop by this rock. Plenty of inclusions and a heat fracture lead me to believe we got the genuine article, priced accordingly. It's still a$

2026

13.85ct Mozambique Ruby Round 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

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Gems Auctions

A Pair of Stunning Art Deco style 18K White Gold Emerald Ruby and Diamond Hanging Earrings

An Art Deco Platinum Diamond and Onyx Ring

An Impressive Art Deco Platinum Diamond and Sapphire Bracelet

Summer Sparkle - Jewelry Gems and Timepieces

Alma Auctioneers

Starts on:

Tel Aviv, Tel Aviv, IL

1 day Left

Regal White Horse and Golden Carriage Trinket Box

Emerald Cut Blue Iolite Sterling Silver Ring

Set of 6 Murano Murrine Goto Glasses

1200+ Gallery, Gems & Collectibles

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

Live28

Nile Gems | Fine Jewelry & Gemstones Auction

Nile Jewels Co Ltd

Started:

Bangkok, Krung Thep, TH

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