Placeholder Core Sample Loose Leaf Tea Infuser | Geology Gift – Cognitive Surplus

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Core Sample Tea Infuser

$ 34.95
16 reviews
Item is in stock Only 0 left in stock Item is out of stock Item is unavailable

In addition to keeping your beverage insulated against temperature change, this double-walled glass infuser flask is sure to keep you digging deeper into the mysteries of the earth. Get lost in the layers of geologic history while you hunt for the

Hand-wash only
Carbon Neutral Shipping & Operations
Compostable Packaging

Volume 15 oz | 450 mL
Width 2.5" | 63 mm
Height 9" | 230 mm
Material Double-walled glass & stainless steel infuser basket
Cap Stainless steel with silicone ring
Origin Designed in Oregon, built internationally
Care Hand wash only, handle with care

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4.5 Based on 16 Reviews
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Lisa B.
United States United States

Not worth it

The inner glass cylinder broke off and is now unusable after only two days of use. I would not recommend this product at all. And I was very disappointed. Since it was a gift for my adult son, and it broke after he used it twice, I was very unhappy. I won’t even bother getting a replacement although he wanted one, because I’m worried it’ll just break again, and I would rather not spend more money on a bad design.


Cognitive Surplus

I'm sorry that happened; I've searched our system and I can't find any contact from this email address. Please email us at and we can take care of your issues. I can't be sure why it broke, but I had a few things I wanted to mention. My apologies in advance because I think some of this is information that you are already familiar with. Please don't take this as me blaming you; I don't think you destroyed the infuser. It's no one's fault these things happen. It is intended as a functional decorative item (like a porcelain teapot, or a vase), but it is not intended to be used in a similar fashion to a thermos or sport bottle. The glass is far too delicate to be part of a daily commute, etc. Under the correct circumstances all glass (even baking glass) can be shocked. With a significantly strong shock or enough instances of being shocked it will crack or break. (For example being shocked due to improper handling during shipping.) It may be used with warm or cold beverages, it just can't quickly change from one to the other. It is not a good idea to put liquid that is boiling in glass or put something hot into a glass that is cold, or something cold into a glass that is still hot. Also the surface that the glass is sitting on can have an impact. If you have a cold counter (especially stone or metal) and you set a hot glass or pour in a hot substance it could shock the glass. All the best, Justin Cognitive Surplus

A Cognitive Surplus Customer
Yesenia A.
United States United States

Elegant design, but thin glass

The design is beautiful!! I loved looking at it. The tea infuser is really well made, easy to pop in and take out, and easy to clean. The lid is really solid and has a nice wood finish. My only problem is the glass. I have several glass tumblers from corkcicle that have even fallen over and bounced with no issues. But, the inner glass of this tumbler is very thin. I haven't had it a week and it broke while I was washing it!

Heather D.
United States United States

Best tea maker ever!

I thought I was purchasing a fun travel cup that might spark interesting science related conversations. My Core Sample infuser is that a a whole lot more. I use it daily when at home as it simply makes such great tea! The seal tight lid is amazing, allowing me to invert the infuser after I have poured out the first cup (it makes two) and keep steeping the remaining cup. I can also make the best iced chai with it, pouring the infused tea into a pitcher of ice. A must-have for my kitchen now. Love it!

Betty M.
United States United States

Beautiful gift

Bought this as a gift to my science brained sister. She loves it. It is gorgeous in print and is easy to take apart to clean. It is a perfect shape to fit your hand comfortably and is just super cool and unique.

United States United States

Exquisite, most elegant tea drinking experience

This is by far the most beautiful amazing tea diffuser I have ever owned. From the wide mouth rim, flawless design and beautiful paleontology core sample chart. I love this! It is a must have!

Jesus P.
United States United States


This is the perfect gift for scientist minds. Great quality, amazing details and finish, perfect size and reasonable price. I am completely satisfied and I totally recommend this cool tea bottle.

A Cognitive Surplus Customer
Lesli W.
United States United States

Brilliant gift!

I bought this tea infuser as a gift for a geologist friend, and he sent me a photo the very next day saying, I'm infusing into the (*checks notes) Holocene. This is really the perfect gift for those geeky scientists in your life!

Cognitive Surplus Core Sample Tea Infuser Review
Andrea A.
United States United States

Archaeologist Approved!

When I saw this online, I just had to have it! Besides being super pretty, it is very functional and is helping me increase my liquids intake. Highly recommended!

Mamie R.
United States United States

Perfect gift

I purchased the Core sample tea infuser as a birthday gift for my college aged daughter. She is a science student who is highly concerned with reducing, reusing, and recycling, and this science themed glass infuser is perfect. It is elegant, functional, and a great conversation piece.

Estrella P.
United States United States

Perfect Mother's Day Gift!!

I bought this for my mother because its everything she loves, tea and paleontology and shes used it almost every day since I gave it to her. The double wall works well to keep things cold or hot.

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