IGI report search
Look up the report.
Compare the stone.
Search a published IGI lab-grown diamond by report number or River Stone LG identifier, then compare the exact stone with current alternatives.
Try the report digits with or without the LG prefix. Availability and final details are confirmed before fulfillment.
Start with the number
Find an IGI-certified listing.
Paste the report number exactly as shown on the certificate or use the River Stone LG identifier.
A clearer comparison path
What to check after the lookup.
The report number identifies the listing. The buying decision comes from comparing the full set of details together.
Match the identifier
Confirm the IGI report number, River Stone LG identifier, shape, carat weight and measurements on the detail page.
Compare the price
Use the current listed price and price per carat as comparison references, alongside clarity, color, growth method and proportions.
Review availability
Supplier inventory changes. River Stone confirms the exact stone, media, pricing and fulfillment details before an order is finalized.
RSDPrice is a reference point
A certificate helps you compare, not appraise.
Two lab-grown diamonds with similar report details can still differ in proportions, visual appearance, media, supplier availability and current market pricing. The certificate is an important starting point, but it does not by itself establish a resale value or guarantee that a listing remains available.
Read the colored diamond pricing methodology
Continue the search
Explore the live catalog.
Start with a certificate, then widen the comparison by collection, color and pricing context.
Questions before you compare
IGI certificate lookup answers.
How do I look up an IGI lab-grown diamond certificate?
Enter the IGI report number or the River Stone LG search identifier in the certificate search field. If the stone is currently published and available, the matching River Stone detail page will open with its specifications, media and current price.
Why does River Stone add LG before some certificate numbers?
LG is River Stone's search identifier for lab-grown diamond listings. Searching with LG plus the report digits makes the identifier easy to match across the River Stone listing, search results and supplier references.
Can I use an IGI certificate number to compare diamond prices?
Yes. A certificate lookup can help you compare the exact listed stone with similar carat weights, shapes, colors, clarities, growth methods and current prices. A listing price is a current offer reference, not an appraisal or a guarantee of future value.
What if my IGI certificate search does not return a result?
The stone may no longer be published, the report number may have been entered with a typo, or the supplier may not currently have it available. Try the digits without spaces, then browse the live collection or request a private search for a similar stone.
Have a number already?