since 1989
All genuine Optima Gem products come with our certificate of quality and authenticity upon request.
Optima Gem is a US based small business that has provided honest, accurately graded gemstones for over 30 years. Satisfaction Guaranteed.
Optima Gem is a US based small business that has provided honest, accurately graded gemstones for over 30 years. Satisfaction Guaranteed.
We are an Equal Opportunity Employer that promotes fair ethical business practices worldwide from the gem mine to your door.
Our gems are calibrated for easy design for the artist and use in standard settings by the jeweler, goldsmith or silversmith.
Need more quantity? Just ask. We limit availability to prevent being oversold. We offer volume discounts and free matching.
We offer the following shipping options. Economy (usually FREE), First Class (Standard Rate), Priority (Standard Rate + $5), UPS 2-day (Standard Rate + $20 US48), UPS 1-day (Standard Rate + $30 US48). If the option you want is not displayed (eBay decides), message us before you order for assistance. In addition, even though eBay provides for a business day or more of handling time in their delivery estimates, we ship all 1-day and 2-day orders placed on a business day before 2pm cst on the same day.
Need more quantity? Just ask. We limit availability to prevent being oversold. We offer volume discounts and free matching.
We offer the following shipping options. Economy (usually FREE), First Class (Standard Rate), Priority (Standard Rate + $5), UPS 2-day (Standard Rate + $20 US48), UPS 1-day (Standard Rate + $30 US48). If the option you want is not displayed (eBay decides), message us before you order for assistance. In addition, even though eBay provides for a business day or more of handling time in their delivery estimates, we ship all 1-day and 2-day orders placed on a business day before 2pm cst on the same day.
Detailed Product Description:
Unheated Star Sapphire cabochons. Not great cutting but polished to reveal the star effect (asterism). There is a wide range of colors and star quality in this grouping. Dome depth varies widely as well. Here's some guidance on picking one for yourself. Keep in mind that we had all of these next to each other when we priced them. Hence, "you get what you pay for". The pictures are good representations. Higher priced gems mean better stars, better oriented stars, better color, etc. We viewed all of these with a point source to judge the asterism. Most of the cheapest ones will require a point source to see the star. If you're unfamiliar with this material or want more info on a particular item, please message us.
A+ - obvious inclusions that don't significantly distract from the beauty of the stone.
Unheated Star Sapphire cabochons. Not great cutting but polished to reveal the star effect (asterism). There is a wide range of colors and star quality in this grouping. Dome depth varies widely as well. Here's some guidance on picking one for yourself. Keep in mind that we had all of these next to each other when we priced them. Hence, "you get what you pay for". The pictures are good representations. Higher priced gems mean better stars, better oriented stars, better color, etc. We viewed all of these with a point source to judge the asterism. Most of the cheapest ones will require a point source to see the star. If you're unfamiliar with this material or want more info on a particular item, please message us.
A+ - obvious inclusions that don't significantly distract from the beauty of the stone.