We have a large library of gemstone articles and reference material, suitable for all levels. Here are links to some of our most popular information pages:
The Basics
Advanced Topics
AJS Gems Newsletter
Gemstone Articles
Custom Jewelry
Madeira Citrine
Chrysoprase Gems
Very Rare Grandidierite
Ring Size Chart
Guide to Green Gems
Mozambique Ruby
Iolite Gemstones
Fancy Color Tanzanite
Color Change Diaspore
Yellow or Golden Beryl
Spinel Gemstone Prices
An Exceptional 2.21 ct Demantoid
Type A Jade from Burma
Canary Yellow Tourmaline
Gemstone Density Chart
Thai Gemstones
Rare Gems
Sapphire Rings
An Amazing Paraiba Tourmaline
Russian Demantoid Garnet
Umbalite Garnet
Raspberry Rhodolite Garnet
Emerald Enhancements
Gemstone Cleavage
Fluorite Gems and Minerals
A Rare Vivid Mandarin Garnet
A Stunning White Sapphire
Danburite Gems
Trillion Cut Gems
North American Gemstones
Spessartite Garnet Prices
Tourmaline Gems for Sale
High and Low Zircons
Spinel Jewelry
Blue Apatite
Cut and Polished Gems
Ametrine from Boliva
Gem Silica Sources
Precision Cut
Gemstone Photos
Blue Sapphire Prices
Rare Gem Prices
White Gemstones
Buying Gems Online
Top Grade Gems
Rare Garnet Prices
Precious and Semiprecious
Gemstone Inclusions
Gemstone Certification
Sapphire Colors
Gemstone Gallery
Mali Garnet
Pink Gemstones
Ceylon Sapphire
Platinum Jewelry
Madeira Citrine
Chrysoprase Gems
Very Rare Grandidierite
Ring Size Chart
Guide to Green Gems
Mozambique Ruby
Iolite Gemstones
Fancy Color Tanzanite
Color Change Diaspore
Yellow or Golden Beryl
Spinel Gemstone Prices
An Exceptional 2.21 ct Demantoid
Type A Jade from Burma
Canary Yellow Tourmaline
Gemstone Density Chart
Thai Gemstones
Rare Gems
Sapphire Rings
An Amazing Paraiba Tourmaline
Russian Demantoid Garnet
Umbalite Garnet
Raspberry Rhodolite Garnet
Emerald Enhancements
Gemstone Cleavage
Fluorite Gems and Minerals
A Rare Vivid Mandarin Garnet
A Stunning White Sapphire
Danburite Gems
Trillion Cut Gems
North American Gemstones
Spessartite Garnet Prices
Tourmaline Gems for Sale
High and Low Zircons
Spinel Jewelry
Blue Apatite
Cut and Polished Gems
Ametrine from Boliva
Gem Silica Sources
Precision Cut
Gemstone Photos
Blue Sapphire Prices
Rare Gem Prices
White Gemstones
Buying Gems Online
Top Grade Gems
Rare Garnet Prices
Precious and Semiprecious
Gemstone Inclusions
Gemstone Certification
Sapphire Colors
Gemstone Gallery
Mali Garnet
Pink Gemstones
Ceylon Sapphire
Platinum Jewelry
Customer Reviews
Incredible Purple Garnet!
"Wow" is all I can say [3.11 ct Royal Purple Garnet]! I have never seen one of these grape garnets in person. It is incredible, Ron! And they're so affordable. Purple gems are really tricky... I don't care for the muted shades of purple you typically find in untreated sapphires and spinels, and I wanted something a bit more high-end than a Uruguayan amethyst. There's not much left in the purple family when you eliminate those choices. So this stone worked out perfectly. Thanks again for your help!
-- AP, USA, Apr 2021
Happy with our Amethyst purchase
Hi Ron, We have received the Amethyst and are happy with our purchase. Prompt and friendly communication throughout the transaction. Kind regards,
-- C&N, New Zealand, Mar 2021
Very Pleased with Star Ruby
Dear Ron, Thank you for your extension of time. The gem has returned from the appraiser. The good news is there is no bad news. I am very pleased with the [10.32 ct Unheated 12 Ray Star] Ruby purchased from you. I will refer other gem stone seekers to your website. Best regards,
-- RB, Australia, Mar 2021
Gem Silica exceeds my expectation
Dear Ron, I received the gem silica today and it exceeds my expectation. Its beautiful greenish blue color combined with the translucency makes it look like a piece of ocean. I really love it. Thank you for your help and the fast shipping. Best regards,
-- SL, South Korea, Feb 2021
Beautiful Sphene!
Hi Ron, I got it [6.17 ct Sphene] yesterday and it's beautiful! Thanks so much for following up.
-- CF, USA, Jan 2021
