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  • May include: A collection of eleven polished, oval-shaped black gemstones. The gemstones are displayed on a hand, with a blurred background of green foliage. The gemstones have a glossy, reflective surface.
  • May include: A collection of eleven polished, oval-shaped black gemstones. The stones have a glossy, reflective surface and are arranged on a weathered, light brown wooden surface. The gemstones are smooth and evenly shaped.
  • May include: A polished, oval-shaped black gemstone is held by silver tweezers. The gemstone reflects light, showcasing its smooth surface. The text "Real Gemstone Store" is visible in the background.
  • May include: A collection of oval-shaped, polished black gemstones, approximately 6x8mm in size, are displayed on a person's fingers. The gemstones have a glossy surface, reflecting light. The text "6x8mm size in picture" is visible.
  • May include: A graphic with text promoting bulk discounts. It features a megaphone icon and text that reads "BULK DISCOUNTS AVAILABLE!". Below are details for 25-piece and 50-piece lots, with extra discounts. The text "Just buy it" is at the bottom.
  • May include: A collection of polished, oval-shaped black gemstones. The stones are arranged on a wooden surface, reflecting light and appearing glossy. The gemstones are a deep, solid black color.
  • May include: A polished, oval-shaped black gemstone is held by silver tweezers, with several similar stones blurred in the background. The image is set against a wooden surface, with the text "Real Gemstone Store" visible.
  • May include: A collection of eleven polished, oval-shaped black gemstones. The stones are arranged on a weathered, light brown wooden surface. Each stone reflects light, showcasing a glossy finish.
  • May include: A collection of eleven polished, oval-shaped black gemstones. The stones are arranged on a white surface, each reflecting light with a glossy finish. The gemstones are a deep, solid black color.
  • May include: A collection of eleven polished, oval-shaped black gemstones. The stones are arranged on a weathered, light brown wooden surface. Each stone reflects light, showcasing a glossy finish. The gemstones are likely for jewelry making or collecting.
  • May include: A collection of eleven polished, oval-shaped black gemstones. The gemstones are displayed on a hand, with a blurred background of green foliage. The gemstones have a glossy, reflective surface.
  • Product video
  • May include: A collection of eleven polished, oval-shaped black gemstones. The stones have a glossy, reflective surface and are arranged on a weathered, light brown wooden surface. The gemstones are smooth and evenly shaped.
  • May include: A polished, oval-shaped black gemstone is held by silver tweezers. The gemstone reflects light, showcasing its smooth surface. The text "Real Gemstone Store" is visible in the background.
  • May include: A collection of oval-shaped, polished black gemstones, approximately 6x8mm in size, are displayed on a person's fingers. The gemstones have a glossy surface, reflecting light. The text "6x8mm size in picture" is visible.
  • May include: A graphic with text promoting bulk discounts. It features a megaphone icon and text that reads "BULK DISCOUNTS AVAILABLE!". Below are details for 25-piece and 50-piece lots, with extra discounts. The text "Just buy it" is at the bottom.
  • May include: A collection of polished, oval-shaped black gemstones. The stones are arranged on a wooden surface, reflecting light and appearing glossy. The gemstones are a deep, solid black color.
  • May include: A polished, oval-shaped black gemstone is held by silver tweezers, with several similar stones blurred in the background. The image is set against a wooden surface, with the text "Real Gemstone Store" visible.
  • May include: A collection of eleven polished, oval-shaped black gemstones. The stones are arranged on a weathered, light brown wooden surface. Each stone reflects light, showcasing a glossy finish.
  • May include: A collection of eleven polished, oval-shaped black gemstones. The stones are arranged on a white surface, each reflecting light with a glossy finish. The gemstones are a deep, solid black color.
  • May include: A collection of eleven polished, oval-shaped black gemstones. The stones are arranged on a weathered, light brown wooden surface. Each stone reflects light, showcasing a glossy finish. The gemstones are likely for jewelry making or collecting.
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Black Onyx Cabochon: Oval Flat Back Calibrated Gemstones for Jewelry Making

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What to know

Natural Black Onyx Oval Cabochon Natural Calibrated Gemstone Lot For Jewelry Making Wholesale Lot All Size Available

Gemstone: Natural Black Onyx Gemstone
Size: 5x7mm 6x8mm 7x9mm 8x10mm 10x12mm 10x14mm 12x16mm 13x18mm 15x20mm
Shape: Oval
Type: Cabochon
Back: Flat Back



⭐Quality Gemstones for Every Creation!

We hand-inspect each gemstone, ensuring it meets our high standards. Whether you're searching for a birthstone or a stunning crystal for your next project, we have something for you. Weight may vary slightly (up to 5%), but rest assured, you're receiving a beautiful, natural gemstone.

⭐Can't Find the Perfect Piece? We've Got You Covered!

No problem! We offer a wide variety of faceted cut, cabochon, and flatback gemstones in various shapes and sizes. Need a calibrated stone for precise jewelry making? Just let us know, and we'll create a custom listing for you. We cater to jewelry making enthusiasts and are happy to accommodate special requests.

⭐Wholesale Lots & Bulk Discounts!

Looking for a treasure trove of gemstones for your creations? We offer a vast selection of gemstones perfect for wholesale lots. Unlock special discounts and bulk order pricing – simply send us a message!

⭐100% Satisfaction Guaranteed

We stand behind our products and want you to be thrilled with your purchase. Should you encounter any issues with your calibrated gemstone, please contact us before leaving neutral or negative feedback. We're here to help and ensure a positive experience!

⭐Size, Color, & Clarity Information

The photo may not reflect the exact size. Our detailed descriptions ensure you know exactly what you're getting when it comes to your loose gemstone. Please note that since these are handmade cabochons, a slight size tolerance of about ±0.20 mm is normal for all handmade pieces. Keep in mind that monitor settings can cause slight color variations, so don't hesitate to reach out if you have any questions.

⭐Explore More & Unleash Your Creativity!

Discover our full collection of gemstones and jewelry on Etsy: https://realgemstonestore.etsy.com

Thank you for your interest!

⭐Additional Services:


Stone Setting: Contact us to have your gemstone set in stunning sterling silver jewelry (rings, earrings, pendants).

HAVE A NICE DAY

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What buyers say

Summarized by AI from all item reviews

4.8 (10)
Great quality Fast shipping
View all item reviews

NowPrice:$1.46+

Original Price: $2.24+

35% off

•

Sale ends on July 31

Shipping & return policies

  • Get it by
    Aug 4-7
  • Returns & exchanges
    Accepted within 30 days.
  • Ships from
    India
  • Cost to Ship
    $5.99 to United States, 43215

    Enjoy free shipping to the US when you spend $35+ at this shop.

    There was a problem calculating your shipping. Please try again.

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Reviews for this item

4.8

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience.

(10 reviews)

4.9 Item quality
4.6 Shipping
4.6 Customer service
100% Buyers recommend

What buyers say

Summarized by AI from all item reviews

Great quality Fast shipping

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5 out of 5 stars 5

Arizona Mar 27, 2026

great looking stones thanks good seller

Arizona Mar 27, 2026

5 out of 5 stars 5

Peggy Dec 6, 2025

Good quality but shipping is slow

Peggy Dec 6, 2025

5 out of 5 stars 5

Sally Dec 2, 2025

High quality and fast shipping

Sally Dec 2, 2025

5 out of 5 stars 5

Sally Dec 1, 2025

Fast shipping and high quality

Sally Dec 1, 2025

Meet your seller

Realgemstonestore
Nikhil Sharma
Realgemstonestore ·

Jaipur, India

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience. 4.7
·
9.1k sales
·
5 years on Etsy

Usually responds in a few hours

Smooth shipping Has a history of shipping on time with tracking.

Speedy replies Has a history of replying to messages quickly.

View shop registration details

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