Gems

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Natural Amethyst 4.03ct Oval Mix Cut from Uraguay No reserve IGI Certification: Uruguayan amethyst is highly prized for its deep, rich purple color, which commands higher prices than lighter alternatives.This 4.08ct natural Uruguayan amethyst features a rectangular mixed cut, sho

2026

Natural Amethyst 4.03ct Oval Mix Cut from Uraguay No reserve IGI Certification

California GemstonesSan Diego, CA

Green Tsavorite 9ct Trillion Cut from Kenya No reserve GGI Certified: high-value garnet exhibiting vivid emerald-green hues, sourced from the Taita/Taveta region. This exceptionally brilliant,, eye-clean, and untreated gemstone features a triangular shape designed to ma

2026

Green Tsavorite 9ct Trillion Cut from Kenya No reserve GGI Certified

California GemstonesSan Diego, 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 GemstonesSan Diego, CA

Tourmaline 8.46ct Round Cut from Brazil No reserve GIE Certified Georgeous Color: an exceptionally rare, high-value gem, typically showcasing intense neon blue or green hues due to copper content. As a large, high-carat stone, it is likely to be highly sought after, with premium ex

2026

Tourmaline 8.46ct Round Cut from Brazil No reserve GIE Certified Georgeous Color

California GemstonesSan Diego, CA

11ct Ceylon Pink Sapphire GIE Certified No Reserve: Large-carat gemstone from Ceylon, characterized by vibrant, almost neoon hues and high transparency. Renowned for exceptional brilliance and clarity, this Ceylon stone is highly prized, durable, and i

2026

11ct Ceylon Pink Sapphire GIE Certified No Reserve

California GemstonesSan Diego, CA

Natural Emerald 9.9ct Oval Cut from Sri Lanka GGL Authenticated: Sri Lankan emeralds are rare but known for consistency, with prices for large, clean, high-quality, untreated stones being particularly high. Comparable to top-tier Colombian emeralds.

2026

Natural Emerald 9.9ct Oval Cut from Sri Lanka GGL Authenticated

California GemstonesSan Diego, CA

Natural Peridot 1.15ct Baguette Cut from San Carlos IGI Certification No Reserve: Mined from the San Carlos Apache Reservation in Arizona.Features a slender baguette cut, likely showcasing a vibrant olive-green color typical of the region's magnesium-rich volcanic olivine. San Carl

2026

Natural Peridot 1.15ct Baguette Cut from San Carlos IGI Certification No Reserve

California GemstonesSan Diego, CA

Natural Green Tourmaline 1.58ct Mixed Cushion Cut from Tanzania IGI Certification No Reserve: a high-quality gemstone, often featuring excellent transparency and luster, with a mixed cushion cut designed to maximize brilliance. Tanzanian tourmalines often exhibit vibrant green, bluish-green, o

2026

Natural Green Tourmaline 1.58ct Mixed Cushion Cut from Tanzania IGI Certification No Reserve

California GemstonesSan Diego, CA

6ct Ceylon Pink Sapphire Round Cut No Reserve GGI Certified: characterized by a vibrant pink hue and significant dimensions,this gemstone is prized for it's origin in Ceylon, a region renowned for producing high-quality sapphires with exceptional color and tran

2026

6ct Ceylon Pink Sapphire Round Cut No Reserve GGI Certified

California GemstonesSan Diego, CA

Natural Almondine Garnet 1.58ct Fancy Cut from Sri Lanka IGI Certification No Reserve: Natural Almandine Garnet originating from Sri Lanka, featuring a Fancy Cut. Almandine is a historically significant variety of garnet, prized for its deep, rich red to purplish-red colors.

2026

Natural Almondine Garnet 1.58ct Fancy Cut from Sri Lanka IGI Certification No Reserve

California GemstonesSan Diego, CA

Natural Almondine Garnet 1.58ct Fancy Cut from Sri Lanka IGI Certification No Reserve: Natural Almandine Garnet originating from Sri Lanka, featuring a Fancy Cut. Almandine is a historically significant variety of garnet, prized for its deep, rich red to purplish-red colors.

2026

Natural Almondine Garnet 1.58ct Fancy Cut from Sri Lanka IGI Certification No Reserve

California GemstonesSan Diego, CA

Lot of 10 Amethyst 3ct Cushion Cut from Brazil VVS Dazzling Purple No reserve: These stones display a deep, vibrant purple color, high clarity (VVS - Very Very Slightly Included), and are known for excellent transparency. They are ideal for high-end jewelry, offering superior cr

2026

Lot of 10 Amethyst 3ct Cushion Cut from Brazil VVS Dazzling Purple No reserve

California GemstonesSan Diego, CA

Neon Blue Tourmaline 11ct modified Cushion Cut No Reserve GIE Certified: Neon blue tourmaline, particularly if it is a Paraíba tourmaline (copper-bearing), is exceptionally high due to its rarity, with high-quality specimens. This stone, often Paraiba-type or from premium

2026

Neon Blue Tourmaline 11ct modified Cushion Cut No Reserve GIE Certified

California GemstonesSan Diego, CA

Natural Emerald 10 Ct Square Radiant Cut from Colombia: Natural Colombian emerald features a square radiant cut, blending intense green color with high brilliant-cut facets. Sourced from renowned Chivor mines, this gemstone is designed for maximum sparkle

2026

Natural Emerald 10 Ct Square Radiant Cut from Colombia

California GemstonesSan Diego, CA

Natural Green Emerald 1.33ct Mixed Oval Cut from Colombia IGI Certification No Reserve: featuring a deep green hue due to the region's unique geological conditions. It is cut into a mixed oval shape, enhancing its color and brilliance, and features inclusions, often described as "jardin"

2026

Natural Green Emerald 1.33ct Mixed Oval Cut from Colombia IGI Certification No Reserve

California GemstonesSan Diego, CA

6.5ct Myanmar Blood Red Ruby Cushion Cut GIE Certified No Reserve: Originating from the Mogok region, it features a vivid, deep-red hue ("pigeon's blood") with strong fluorescence. Such a large stone is highly valuable, characterized by rich color saturation. Split f

2026

6.5ct Myanmar Blood Red Ruby Cushion Cut GIE Certified No Reserve

California GemstonesSan Diego, CA

6.5ct Myanmar Blood Red Ruby Cushion Cut GIE Certified No Reserve: Originating from the Mogok region, it features a vivid, deep-red hue ("pigeon's blood") with strong fluorescence. Such a large stone is highly valuable, characterized by rich color saturation. Split f

2026

6.5ct Myanmar Blood Red Ruby Cushion Cut GIE Certified No Reserve

California GemstonesSan Diego, CA

Natural Blue Topaz 1.33ct Oval Cut from Brazil IGI Certification No Reserve: a faceted, oval-cut gemstone originating from Brazil. Features the signature deep, dark intense grayish-blue color. Renowned for being "eye-clean" (IF-VVS), this durable gem offers high brilliant-cut

2026

Natural Blue Topaz 1.33ct Oval Cut from Brazil IGI Certification No Reserve

California GemstonesSan Diego, CA

Natural Padparadscha Sapphire 6.10ct Round Cut from Ceylon: This natural Padparadscha Sapphire is exceptional! From Ceylon gemstone featuring a distinct pink-orange color mix resembling a lotus blossom. Cut to display high brilliance, this round cut gem is hig

2026

Natural Padparadscha Sapphire 6.10ct Round Cut from Ceylon

California GemstonesSan Diego, CA

6.02ct Ceylon Green Sapphire Round Cut No Reserve GIE Certified: Features a vivid, rich green color and high transparency, originating from Sri Lanka. This rare, untreated, gem is characterized by excellent polish, high clarity, and a strong, vibrant color saturati

2026

6.02ct Ceylon Green Sapphire Round Cut No Reserve GIE Certified

California GemstonesSan Diego, CA

Tanzanite 10pcs 7.5ct tcw Round Cut from Tanzania No reserve GGI Certified: eaturing a brilliant round cut. Sourced exclusively from the Merelani Hills near Arusha, Tanzania, these gems exhibit a rich violet-blue to deep blue hue, known for their exceptional rarity, trichrois

2026

Tanzanite 10pcs 7.5ct tcw Round Cut from Tanzania No reserve GGI Certified

California GemstonesSan Diego, CA

PATEK PHILIPPE, 18K GOLD & DIAMOND WATCH: This lot features an incredible 18k gold and diamond watch by Patek Philippe. Watch reference 3268/1, circa 1960 and accompanied with an appraisal from Pacific Gem Lab. This watch has a total weight o

2026

PATEK PHILIPPE, 18K GOLD & DIAMOND WATCH

Salem Auction HouseSalem, OR

Loose Diamond - OVAL 5.1ct E VVS2: Loose Diamond - OVAL 5.1ct E VVS2 Source: This is a real non-mined Diamond that has been grown in a lab Shape: OVAL Carats: 5.1 Color: E Clarity: VVS2 Certification: IGI Video:

2026

Loose Diamond - OVAL 5.1ct E VVS2

Diamond DepotNew York, NY

14k White Gold Bracelet w/ Diamonds & Various Gems: 7" long bracelet made with 14k euros. Decorated with approximately 288 melee diamonds and 24 colored gems. Lot 14 cannot confirm the specific types of gems used, but a simple electronic test suggested

2026

14k White Gold Bracelet w/ Diamonds & Various Gems

Lot 14 AuctionsNiles, IL

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24

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

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

Live25

Nile Gems | Fine Jewelry & Gemstones Auction

Nile Jewels Co Ltd

Started:

Bangkok, Krung Thep, TH

AGL Certified 7.63ct Natural No Heat Royal Blue Sapphire Diamond Ring Platinum*v

Authentic Tiffany & Co 18kt Pin 11793**

GIA Certified 5.08ct. Natural Ruby Diamonds ring 18kt Ballerina Prime *v

Gems & Glamour: Fine Jewelry Stones Auction

Ends from:

New York, NY, US

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