X
Gemstone Search

Your Details

Please fill in your email address

Please fill in a password

Forgot your password?

6.68 ct Multicolor Black Opal Gemstone, Black Opal Gem in Marquise Cabochon Shape for Sale.
Photos are of Actual Product for Sale
6.68 ct Multicolor Black Opal Stone, Natural Black Opal in Marquise Cabochon Shape for Sale Black Opal Gemstone in 20 x 10 mm (calibrated) Size for Sale, Black Opal Stone in Multicolor Color

6.68ct Natural Multicolor Black Opal, Marquise, Opaque

9.7 out of 10
See Bizrate Ratings for GemSelect
Black Opal Product ID: 679821
Type: Black Opal
Black Opal Weight: 6.68 ct Black Opal 1 gem
Black Opal Size: 20 x 10 mm calibrated Black Opal
Black Opal Size: 19.5 x 10.3 x 7.5 mm Black Opal
Black Opal Exact Size: 19.54 x 10.25 x 7.46 mm
Length x Width x Depth
Black Opal Shape: Marquise Cabochon Black Opal
Black Opal Color: Multicolor Black Opal
Black Opal Clarity: Opaque Black Opal
Black Opal Treatment: Smoked
Black Opal Origin: Ethiopia Black Opal
Content: 1 pc
Certificate Options

Checking all Boxes

  • Natural certified gemstones

    Gemstone Laboratories
  • Accept Credit, Debit Card and PayPal

    Payment Options
  • Worldwide shipping

    Shipping Options
  • 30-day risk free return policy

$
240.48
Item in Stock
Certified Gemstones

RISK FREE

30 DAY RETURN MONEY BACK GUARANTEE

100%

FULLY GUARANTEED

Product Description

This is a 6.68 carat natural multicolor Black Opal gem, 1 pc in marquise shape with an exact size of 19.54 x 10.25 x 7.46 mm. This loose Black Opal gemstone was mined in Ethiopia and its clarity is Opaque.

Policies

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.

Posted By Jen in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Have made 2 purchases so far from GemSelect and they have been amazing! Anytime I requested additional info, videos or pictures of a particular item, the response was always timely and helpful. This is a great place to buy, if you are looking for loose stones. Highly recommend!

Posted By Britnee Rose in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love, and have always loved, your website.

Posted By Aberabic in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.

Posted By DNaber in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All good

Posted By DouscheGift in August, 2025
Source: Bizrate
Download Identification Report PDF
BGL Brief Report $ 18.00
Turnaround Time: 3-4 working days Details
AIG Brief Report $ 35.00
Turnaround Time: 5-10 working days Details
ICA Brief Report $ 90.00
Turnaround Time: 8-12 working days Details
Enlarged Gemstone Image