The smartest way to buy a diamond The smartest way to buy a diamond
Whether you're shopping online or off, our smart research tools will help you find the perfect diamond.
Search Smarter
Everything you need to find your diamond
We provide you with unique data and insights to find exceptional diamonds from trusted jewelers
Fair Price Estimate
Like a Zillow Zestimate for your loose diamond, our price estimates help you find a great deal on the perfect stone.
Cut Score
Optimize your diamond’s sparkle by leveraging our proprietary Cut Score for round diamonds and go beyond “Excellent” cut.
Visual Carat
Carat weight measures how much a diamond weighs but our visual carat tells you how big your diamond looks to the eye.
Price History
Track the historical pricing of every diamond listed on StoneAlgo or track market prices for any color, clarity, and carat weight.
Trusted Brands
StoneAlgo only works with the top online and local jewelers to make sure you find a great diamond from a trustworthy retailer.
24/7 Customer Service
The StoneAlgo concierge team is here to help, inform, and guide you throughout your diamond shopping journey.
StoneAlgo helps even the most novice diamond hunters become functional enough to make informed and decent decisions on such an important and emotional purchase.
Diamond Price Calculator
The most advanced diamond price calculator on the market, StoneAlgo’s diamond price calculator uses the live prices of hundreds of thousands of diamonds to accurately predict the fair price of any GIA or AGS certified diamond.
Detailed views of every diamond
See a full breakdown of your diamond’s fair price estimate, cut score, visual carat weight, and more. Simply click on any diamond in our Search Engine or query any GIA certified diamond from our GIA Check tool.
Ready to get started? Dive into search or run a free GIA check.