X
Gemstone Search

Your Details

Please fill in your email address

Please fill in a password

Forgot your password?

6.21 ct Black Star Sapphire Gemstone, Star Sapphire Gem in Round Cabochon Shape for Sale.
Photos are of Actual Product for Sale
6.21 ct Black Star Sapphire Stone, Natural Star Sapphire in Round Cabochon Shape for Sale Star Sapphire Gemstone in 10 mm (calibrated) Size for Sale, Star Sapphire Stone in Black Color

6.21ct Natural Black Star Sapphire, Round, Opaque

9.2 out of 10
See Bizrate Ratings for GemSelect
Star Sapphire Product ID: 682727
Type: Star Sapphire
Star Sapphire Weight: 6.21 ct Star Sapphire 1 gem
Star Sapphire Size: 10 mm calibrated Star Sapphire
Star Sapphire Size: 10.1 mm Star Sapphire
Star Sapphire Exact Size: 10.13 x 5.25 mm
Diameter x Depth
Star Sapphire Shape: Round Cabochon Star Sapphire
Star Sapphire Color: Black Star Sapphire
Star Sapphire Clarity: Opaque Star Sapphire
Star Sapphire Treatment: Heated
Star Sapphire Origin: Thailand / Kanchanaburi Star Sapphire
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

$
149.04
Item is Unavailable
Item in Stock
Certified Gemstones

RISK FREE

30 DAY RETURN MONEY BACK GUARANTEE

100%

FULLY GUARANTEED

Product Description

This is a 6.21 carat natural black Star Sapphire gem, 1 pc in round shape with an exact size of 10.13 mm x 5.25 mm . This loose Star Sapphire gemstone was mined in Thailand and its clarity is Opaque. This natural Star Sapphire has been heated to enhance its vivid color.

GemSelect 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

Gem Select has a user friendly website and the product is very good as is the price. The gems are described accurately and I always get what I think I'm getting.

Posted By Happy Customer in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love the gems and your website, every time I want to buy I usually spend between 6 and 8 hours on your website.

Posted By Bryan De David in April, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Very easy to navigate with a great selection.

Posted By Bar181 in August, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Appreciated the selection. Jadeite is hard to find under $100. Website has alot of variety.

Posted By Jess in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I found what I was looking for...had to look up millimeters to inches. It would be nice to see something, like a quarter, in the pix to show relative size. I plan on buy loose gemstones for every month in the calendar

Posted By TheP in January, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I did not have any problems

Posted By Clilrichard in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

love these guys been ordering since 2000 maybe

Posted By JHT in April, 2025
Source: Bizrate
Download Identification Report PDF
Enlarged Gemstone Image