search
  • Sign In
    Sign Up
  • English speaking customer support only

    Toll Free - USA & Canada only:
    1-800-464-1640

    International:
    +66-39609697

  • Change Language
  • USD
Loose 28.65 ct Cushion Black Obsidian Gemstone for Sale, 30.7 x 17.7 mm | GemSelect
Loose 28.65 ct Cushion Black Obsidian Gemstone for Sale, 30.7 x 17.7 mm | GemSelect Loose 28.65 ct Cushion Black Obsidian Gemstone for Sale, 30.7 x 17.7 mm | GemSelect

28.65ct Cushion Black With Bronze Obsidian from Mexico, Dimension 30.7 x 17.7mm, Natural untreated Gemstone, Opaque Clarity, 1pc Cushion Cabochon Obsidian, Mohs Hardness of 5 - 5.5

On-Time Delivery:
8.9 out of 10
Product Availability:
9.1 out of 10
Product Met Expectations:
8.4 out of 10
8.6 out of 10
Product ID: 433674
Type: Obsidian
Weight: 28.65 ct 1 gem
Size:(more) mm calibrated
Size:(more) 30.7 x 17.7 x 6.5 mm
Shape: Cushion Cabochon
Color: Black with Gold Sheen
Clarity: Opaque
Treatment: Untreated
Origin: Mexico
Content: 1 pc
Certificate Options
$
3152

Product Description

The product is a natural cushion cabochon Obsidian in black with-bronze color with the exact size of 30.66 x 17.7 x 6.52mm. The gemstone was mined in Mexico and has a finished weight of 28.65ct. The clarity of this gemstone is Opaque. This black Obsidian is completely untreated; no treatment at all has been applied. The item is sold as seen in the picture: 1 piece black Obsidian for the price listed.

Product Features

  • This gemstone has not been treated in any way. It is 100% natural untreated.

Product Uses

  • The size of the gemstone is good for a center-stone in a pendant.

Policies

Certified Store Reviews

Over 16 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

accurate and timely updates on my order was most appreciated on my last order.

Posted By Danm10 in February, 2022
Source: Bizrate

Overall Rating -> 8 star ratings

Overall I am happy with the selecting and purchasing process. I will not recommend gemselect until I receive my purchases and am satisfied with their quality.

Posted By Phil in December, 2021
Source: Bizrate

Overall Rating -> 10 star ratings

This web site is like heaven lol. I am a rock hound and I am a Christian and we represent rocks in our lives. The Diamond is has to be heated a lot and we are all jewels of God. I have a lot of rocks at home. My Husband gives the eye roll when i show him more rocks lol Uh life is good lol. ha ha

Posted By Bonnie in June, 2022
Source: Bizrate

Overall Rating -> 10 star ratings

It was a quick and easy process at a fair rate!

Posted By Opalescent in September, 2021
Source: Bizrate

Overall Rating -> 8 star ratings

I believe this market could grow very large in the wake of cryptocurrencies as gold and silver become less popular. I believe birthstones will begin to increase in popularity for jewelry and meaningful trinkets. I think this website should consider another metric that gauges how "raw" the mineral/gem/stone/etc. is-- how processed it has been. Some people may want to get the raw material from a specific location, know its history, and contract someone to refine it into a personal keepsake.

Posted By JohnD in August, 2021
Source: Bizrate

Overall Rating -> 10 star ratings

Huge selection of gemstones. This is my go to site for gems that aren't available through online retailers like Rio or Stuller. Perfect for custom and one of a kind pieces.

Posted By Erica in September, 2021
Source: Bizrate

Overall Rating -> 10 star ratings

Easy ordering process, pictures are great for comparisons

Posted By Moose in October, 2021
Source: Bizrate

Overall Rating -> 10 star ratings

Its a favorite webpage

Posted By Wolfaguirre in June, 2022
Source: Bizrate

Overall Rating -> 10 star ratings

Always a great selection

Posted By Austin in July, 2021
Source: Bizrate

Overall Rating -> 10 star ratings

I love this website.

Posted By Honeypups in March, 2022
Source: Bizrate

Overall Rating -> 9 star ratings

Great and detailed. Will be purchasing again.

Posted By DJ in June, 2022
Source: Bizrate

Overall Rating -> 7 star ratings

It would be nice if free shipping was offered for high dollar total orders, also the site could be easier to navigate if it was left to search all products at once instead of certain collections. Although very helpful adding a feature to make it easier to search all your inventory is better than hunting and weeding through multiple pages and links.

Posted By Snifferpippets in January, 2022
Source: Bizrate

Overall Rating -> 10 star ratings

I’ve purchased from GemSelect a few times in the past year. I would not shop anywhere else. The photos make all the difference…I can select the exact color I want. I have over 100 pieces, and I’ve never been less than thrilled with each gemstone.

Posted By Emma in October, 2021
Source: Bizrate

Overall Rating -> 9 star ratings

would be nice to have idea section to use the gems for. I am having a jewler create a necklace for my wife, but it would have been nive to see some examples.

Posted By Treegod in April, 2022
Source: Bizrate

Overall Rating -> 10 star ratings

I am a first time buyer and the web page was very informative in helping me select a stone.

Posted By Judy in September, 2021
Source: Bizrate
Download Identification Report PDF
BGL Brief Report $ 15.00
Turnaround Time: 3-4 working days Details
AIG Brief Report $ 25.00
Turnaround Time: 5-10 working days Details
ICA Brief Report $ 39.00
Turnaround Time: 8-12 working days Details
STAY IN TOUCH
*You're signing up to receive GemSelect promotional email.

Privacy Notice © 2005-2022 GemSelect.com all rights reserved.

Reproduction (text or graphics) without the express written consent of GemSelect.com (SETT Company Ltd.) is strictly prohibited.

1031

More Shapes
Popular Gemstones
  • Sapphire
  • Emerald
  • Ruby
  • Aquamarine
  • Zircon
  • Opal
  • Topaz
  • Tourmaline
  • Garnet
  • Amethyst
  • Citrine
  • Tanzanite
All Gemstones (136)
A B C D E F G H I J K L M N O P Q R S T V Z
  • Actinolite Cat's Eye
  • Agate
  • Agate Geode
  • Almandine Garnet
  • Amazonite
  • Amethyst
  • Amethyst Geode
  • Ametrine
  • Ammolite
  • Andalusite
  • Andesine Labradorite
  • Apatite
  • Aquamarine
  • Aventurine
  • Black Opal
  • Bloodstone
  • Boulder Opal
  • Carnelian
  • Cat's Eye Apatite
  • Cat's Eye Aquamarine
  • Cat's Eye Gemstones
  • Cat's Eye Moonstone
  • Cat's Eye Opal
  • Cat's Eye Scapolite
  • Chalcedony
  • Charoite
  • Chocolate Opal
  • Chrome Diopside
  • Chrysoberyl
  • Chrysocolla
  • Chrysoprase
  • Citrine
  • Color Change Gemstones
  • Color-Change Diaspore
  • Color-Change Fluorite
  • Color-Change Garnet
  • Color-Change Sapphire
  • Coral
  • Demantoid Garnet
  • Dendritic Agate
  • Diamond
  • Druzy Amethyst
  • Druzy Azurite
  • Druzy Variscite
  • Emerald
  • Enstatite
  • Fire Agate
  • Fire Opal
  • Fluorite
  • Fossil Coral
  • Garnet
  • Golden Beryl
  • Grandidierite
  • Grossularite Garnet
  • Hematite
  • Hemimorphite
  • Hemimorphite Druzy
  • Hessonite Garnet
  • Howlite
  • Idocrase
  • Imperial Topaz
  • Iolite
  • Jade Gemstones
  • Jadeite
  • Jasper
  • Kornerupine
  • Kunzite
  • Kyanite
  • Labradorite
  • Lapis Lazuli
  • Larimar
  • Malachite
  • Malaya Garnet
  • Mali Garnet
  • Maw-Sit-Sit
  • Moonstone
  • Morganite
  • Mother Of Pearl
  • Mystic Topaz
  • Nuummite
  • Obsidian
  • Opal
  • Opal Doublet
  • Opal In Matrix
  • Pearl
  • Peridot
  • Pietersite
  • Prehnite
  • Pyrite
  • Pyrope Garnet
  • Quartz
  • Quartz Cat's Eye
  • Quartz With Hedenbergite
  • Quartz With Marcasite
  • Rainbow Moonstone
  • Rainbow Pyrite
  • Rhodochrosite
  • Rhodolite Garnet
  • Rose Quartz
  • Rubellite Tourmaline
  • Ruby
  • Ruby In Fuchsite
  • Ruby-Zoisite
  • Rutile Quartz
  • Sapphire
  • Scapolite
  • Scolecite
  • Seraphinite
  • Sillimanite
  • Sillimanite Cat's Eye
  • Smithsonite
  • Smoky Quartz
  • Snowflake Obsidian
  • Sodalite
  • Spectrolite
  • Spessartite Garnet
  • Sphene
  • Spinel
  • Star Diopside
  • Star Garnet
  • Star Gemstones
  • Star Moonstone
  • Star Rose Quartz
  • Star Ruby
  • Star Sapphire
  • Strawberry Quartz
  • Sunstone
  • Tanzanite
  • Tiger's Eye
  • Tiger's Eye Matrix
  • Topaz
  • Tourmaline
  • Tsavorite Garnet
  • Turquoise
  • Variscite
  • Zircon
Main Categories
  • New Arrivals
  • Gemstone Lots
  • Calibrated Gemstones
  • Gemstones By Piece
  • Top Grade Gems
  • Matching Pairs
  • Cabochon Gemstones
  • Drilled Gems, Briolettes and Beads
  • Birthstones
  • Gemstone Carvings
  • Fancy Gemstones
  • Star Gemstones
  • Unheated Sapphire
English speaking customer support only

Toll Free - USA & Canada only:
1-800-464-1640

International:
+66-39609697

Save Money
No shipping Fees for Additional Items!
$8.90 Worldwide Shipping

Update Translation
 
Current Value
New Value
GemSelect Gemstones
X Close Window
Colored Gemstones
X Close Window
Colored Gemstones
X Close Window
Colored Gemstones
Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart