The best THCA isolate suppliers in 2026 sell 99%+ THCA by the 100g, 500g and kilo, back it with a COA from an ISO 17025-accredited lab, and post or quote a clear price per kilogram. Based on what each company publishes, six strong sources are Bulk CBD Distributors, Delta 8 Pro, Titan Botanicals, Smoky Mountain CBD, Golden Hour Hemp and Diesel Hemp. They differ on form (fine powder, diamonds or both), the largest size you can buy online, whether prices are posted and which states they ship to. This guide compares the six, explains powder versus diamonds, shows the price per kilo side by side and covers what to check on the COA.
99%+
THCA purity buyers should expect on the COA
about 87%
Total THC on a 99% THCA lot (THCA x 0.877)
$1,650 to $2,350
Posted price per kg for isolate powder on this list
6 suppliers
Compared on form, purity, sizes and price
The Best THCA Isolate Suppliers at a Glance
All details are as each company states them on its own website, checked October 31, 2026.
| Supplier | Forms | Stated purity | Sizes online | Pricing | Best for |
|---|---|---|---|---|---|
| Bulk CBD Distributors | Powder; sugar, micro, small and large diamonds; liquid diamonds | 99%+ (representative COA 99.62%) | 100g to 5kg; 100kg+ by quote | Posted; from $1,649.80/kg | Kilo buyers who want powder and diamonds from one source |
| Delta 8 Pro | Diamonds (unflavored and flavored) | 99% (unflavored) | 1g to 28g | Listed; $219.99 for 28g | Stores that want small diamond sizes with clear unit minimums |
| Titan Botanicals | Powder and diamonds | 99%+ | Minimum quantity of 3 units | Posted; powder $1,700, diamonds $2,600/kg | Comparing posted powder and diamond prices |
| Smoky Mountain CBD | Powder and diamonds | 99% | 2g to 1kg | Posted; isolate $2,350/kg, diamonds $2,499/kg | Small test sizes before a kilo |
| Golden Hour Hemp | Powder; diamonds | 99%+ (COA 99.144%) | 10g and 50g retail; bulk via wholesale portal | Retail posted; bulk in portal | Buyers who want a full COA readout on the page |
| Diesel Hemp | Diamonds (pure isolate or live resin) | 98% | Quoted per enquiry | Quote after application | Diamonds alongside solventless concentrates |
How We Chose These THCA Isolate Suppliers
We looked for US companies that sell THCA isolate or THCA diamonds in quantities a brand or manufacturer can work with, and checked each one for:
- Purity: a stated THCA percentage, and whether a COA backs it up.
- Form: fine crystalline powder, diamonds in different crystal sizes, or both.
- Sizes: the smallest and largest size you can order online, and where quotes take over.
- Price access: whether a price per kilo is posted or only quoted.
- Documentation: whether a batch COA comes with the order or one sample COA is reused over time.
- Shipping limits: states a company says it will not ship THCA to.
- Evidence it is active: a current site with pages that are clearly being kept up.
We left out companies whose pages had not been updated in a long time, wholesale listings hidden behind a login, and sellers that only describe purity as a wide range. We did not repeat claims we could not check. Prices and stock change quickly in this category, so treat the figures below as a snapshot and confirm them before you order.
1. Bulk CBD Distributors
Bulk CBD Distributors is a B2B wholesale supplier of hemp cannabinoid ingredients, in the hemp industry since 2020. We are a distributor, not a single extraction lab, so we choose lots from producers we work with directly or indirectly and can carry both isolate powder and several diamond grades at once. Our THCA isolate is a 99%+ crystalline powder made through extraction, winterization, distillation and crystallization.
- Powder sizes and price: 100g, 250g, 500g, 1kg and 5kg online, from $295 for 100g to $8,249 for 5kg ($1,649.80 per kg); volumes up to 100kg and more by quote
- Diamonds: THCA diamonds in sugar, micro, small and large grades, 100g to 5kg, at $2,399 to $5,400 per kg online, plus Liquid Diamonds THCA
- COAs: a representative COA on the product page (FESA Labs, tested 09-04-2026, 99.62% THCA) with batch-to-batch history, and the batch COA with every order, from third-party ISO 17025-accredited labs
- Ordering: choose a size online and place the order; we confirm it, then send the payment link, and most orders ship within a day or two of payment
- Packaging: ingredients are blind shipped, with no brand labeling on the box
Why buyers choose BCD:
- Powder and diamonds on one account. Formulators who need fine powder and shops that want diamonds can buy both without opening a second vendor.
- A public COA library. Our COA library lists 300+ third-party ingredient COAs with batch history, with no login or form, so you can check results before you ask for a price.
- You pay after we confirm. Nothing is charged until we have checked stock and confirmed your order, because we would rather build a working relationship than push a one-time sale.
Best for: Brands and manufacturers buying THCA isolate by the kilo who also want diamonds, with posted pricing up to 5kg.
Worth knowing: We do not extract in-house. If you want to audit the crystallization line yourself, an extractor that sells direct may suit you better.
Compare Our THCA Isolate Against Your Shortlist
Sizes, the price ladder and the representative COA are on the THCA isolate page. Tell us your volume and we will quote it, with the batch COA shipping with your order.
2. Delta 8 Pro
Delta 8 Pro is based in Broomfield, Colorado and sells THCA diamonds in small sizes, with wholesale tiers for both stores and distributors.
- Diamonds: unflavored diamonds stated at 99%, plus flavored diamonds
- Sizes and listed prices: unflavored diamonds at $24.99 for 1g, $59.99 for 5g, $99.99 for 10g and $219.99 for 28g
- Minimums: wholesale buyers order 3 per SKU and 12 per order; distributors order 100 per SKU and 500 per order
- Wholesale: a catalog request form with private label as an option; wholesale pricing is gated
- COAs: it says every product is third-party tested, with COAs on product pages
Best for: Stores and distributors that want small diamond sizes with clear unit minimums.
Worth knowing: The largest size listed is 28g and no fine isolate powder is listed, so it suits shelf stock more than formulators.
3. Titan Botanicals
Titan Botanicals sells THCA flower, crumble, rosin and an isolate and diamonds collection, and publishes a lab results page.
- Powder: THCA isolate powder listed at $1,700, described as 99%+ pure
- Diamonds: THCA diamonds at $2,600 per kg
- Minimum: a minimum quantity of 3 units on its isolate and diamond listings
- COAs: it states every batch is third-party tested; results sit on a separate lab results page
Best for: Buyers who want posted prices for both powder and diamonds.
Worth knowing: The isolate listing labels the $1,700 price per kg in one place and per pound in another, so confirm the unit in writing. Some copy on the page also describes the powder in ways that do not match how THCA works, so lean on the COA, not the description.
4. Smoky Mountain CBD
Smoky Mountain CBD, based in Murphy, North Carolina, sells THCA isolate and diamonds in retail sizes and in bulk, with a wholesale program for businesses.
- Isolate: 2g, 14g and 28g retail sizes, plus 100g, 500g and 1kg bulk sizes at $399 to $2,350
- Diamonds: 99% THCA diamonds from 2g up to 1,000g, priced $15 to $2,499
- COAs: a test results page
- Shipping: does not ship THCA products to Arkansas, Idaho, Minnesota, Oregon, Rhode Island, Tennessee or Texas
- Company states: a 30-day satisfaction guarantee on eligible purchases
Best for: Buyers who want to test a few grams, then step up to a kilo from the same page.
Worth knowing: Its largest online size is 1kg, and the per-kilo price is higher than kilo-first suppliers on this list.
5. Golden Hour Hemp
Golden Hour Hemp sells THCA isolate and diamonds on its retail store and runs a separate wholesale portal with bulk pricing and label-ready packaging.
- Isolate: 99%+ crystalline powder in 10g and 50g retail sizes; bulk sizes are in the wholesale portal
- COA on the page: SC Laboratories, an ISO/IEC 17025:2017 accredited lab, reports 99.144% THCA, 99.686% total cannabinoids, Delta-9 and Delta-8 not detected and 86.949% total THC for the batch shown
- Contaminants: it states pesticides and residual solvents were below detection limits for that batch
- Extras: white label services through the wholesale portal
Best for: Buyers who want to read the full potency breakdown before they ask for a quote.
Worth knowing: The COA shown was tested September 9, 2025, so ask for a current COA. Bulk prices are only visible inside the portal.
6. Diesel Hemp
Diesel Hemp is a Colorado grower in Loveland that ships wholesale nationwide. Alongside flower and solventless rosin, it lists THCA diamonds for wholesale buyers.
- Diamonds: 98% THCA, sold as pure isolate or as live resin diamonds
- Minimums and price: quoted per enquiry, by product line and volume
- Process: an online wholesale application, reviewed within 1 to 2 business days, followed by a call
- COAs: it states all product is third-party lab tested and documentation goes out with wholesale orders
Best for: Shops that want diamonds plus flower and rosin from one grower and are fine with an application.
Worth knowing: It does not list a fine isolate powder, and there is no posted price, so it suits diamond buyers more than formulators.
THCA Isolate vs Diamonds: What Is the Difference?
THCA isolate and THCA diamonds are the same material. Diamonds are very large THCA isolate crystals grown slowly out of a concentrated solution; isolate powder is the same crystal milled or grown fine; diamond dust and sugar diamonds sit in between. Both usually test above 98% THCA.
| Feature | Isolate powder | Diamonds |
|---|---|---|
| Crystal size | Fine and uniform | Sugar, micro, small or large |
| Typical purity | 99%+ | 98 to 99%+ |
| Main buyer | Formulators who weigh and blend | Retailers who sell by appearance |
| Price per kg | Lower | Higher; varies by grade and supplier |
Bigger crystals do not contain more THCA, and price by crystal size varies from one supplier to the next, so compare quotes for the grade you want. Our guide to what THCA diamonds are explains the crystal sizes and how they form. If you weigh the material into a formula, powder is usually the better value. If you sell it as it is, diamonds tend to earn their premium. See the THCA diamonds page for the grade options side by side.
THCA Isolate Price per Kg Compared
This chart shows the lowest price per kilogram each supplier posts online, at its largest listed size. Golden Hour Hemp and Diesel Hemp do not post bulk prices, and Delta 8 Pro's largest size is 28g, so they are left out.
Price per kilo drops as size goes up, so compare at the volume you will really buy. A 100g price can be two to three times the per-kilo rate of a 5kg order. Ask for the price at your actual monthly volume, not the headline rate.
Pro Tip: Price the Total THC, Not Just the Gram
Two lots at the same price per kilo are not the same value if one tests 98% and the other 99.6%. Divide the price by the THCA percentage on the COA to see what you really pay for each gram of THCA.
How to Read a THCA Isolate COA
Ask for the COA before you ask for the price, and check these lines:
- THCA percentage. Expect 99% or more on isolate powder and 98% or more on diamonds.
- Delta-9 THC as its own line. On clean isolate it is usually not detected, but it still belongs on the report.
- Total THC. Total THC is THCA multiplied by 0.877, plus Delta-9 THC. A 99% THCA lot works out to about 86.8% total THC. Our total THC calculation guide shows the formula.
- Residual solvents. Most THCA isolate is crystallized from a solvent extract, so this panel matters more here than on flower.
- Heavy metals and microbials. Check both panels are present and passed.
- Test date. The test date should be recent, not from last year.
- Lab accreditation. Look for an ISO 17025-accredited third-party lab that is independent of the seller.
The hemp COA reading guide walks through a full report line by line.
How to Pick the Best THCA Isolate Supplier
| If you need... | Shortlist |
|---|---|
| The lowest posted price per kilo | BCD, Titan Botanicals |
| More than 1kg ordered online | BCD |
| A small test size before a kilo | Smoky Mountain CBD, Golden Hour Hemp, BCD |
| Powder and diamonds from one source | BCD, Titan Botanicals, Smoky Mountain CBD |
| A detailed COA on the product page | BCD, Golden Hour Hemp |
| Diamonds plus flower and rosin | Diesel Hemp, BCD |
What Should You Ask a THCA Isolate Supplier Before You Order?
- Can I see the COA, with THCA, Delta-9, residual solvents and heavy metals?
- Which ISO 17025-accredited lab tested it, and when?
- Is the price per kilo or per pound, and what is it at my real volume?
- Is this powder or diamonds, and which crystal grade?
- Which states do you ship THCA to?
- What happens to my order if a lot sells out, or if the product arrives below its stated purity?
Compliance Note: This guide is general information, not legal advice. Several states already restrict THCA products, and rules differ by state. Check the law in every state where you buy, make or sell.
What This Means for Your Business
- Buy for sell-through. Size orders to what you can turn into finished product and sell, since state rules on THCA change often.
- Get the COA first. Compare documentation before price.
- Match the form to the job. Powder for weighed formulas and infusion, diamonds for products sold on appearance.
- Price per gram of THCA. Adjust the per-kilo price for the purity on the COA.
- Keep a second line in testing. Ingredients such as CBG isolate are worth testing alongside THCA in your formulas.
Ready to Order THCA Isolate by the Kilo?
BCD lists 99%+ THCA isolate from 100g to 5kg with posted pricing, plus four diamond grades, and the batch COA ships with every order. View the THCA isolate page or tell us what you need.
Frequently Asked Questions
Who are the best THCA isolate suppliers?
On this list, Bulk CBD Distributors, Delta 8 Pro, Titan Botanicals, Smoky Mountain CBD, Golden Hour Hemp and Diesel Hemp. The right one depends on your volume, whether you need powder or diamonds and which states you ship to.
How much does THCA isolate cost per kg?
Posted prices on this list run from about $1,650 to $2,350 per kg for isolate powder, and from about $2,399 to $2,600 per kg for diamonds. Larger orders usually cost less per kilo.
What purity should THCA isolate be?
Expect 99% THCA or higher for powder and 98% or higher for diamonds, confirmed on a COA from an ISO 17025-accredited lab.
What is the difference between THCA isolate and THCA diamonds?
They are the same material in different crystal sizes. Diamonds are large isolate crystals; powder is fine crystal. Powder is usually cheaper per kilo and easier to weigh into formulas.
What is the minimum order for THCA isolate?
It varies. Delta 8 Pro asks wholesale buyers for 3 per SKU and 12 per order, Titan Botanicals lists a 3-unit minimum, and Smoky Mountain CBD sells from 2g. BCD sells THCA isolate from 100g and up to 5kg online.
How much total THC is in THCA isolate?
Multiply the THCA percentage by 0.877 and add any Delta-9 THC. A 99% THCA isolate works out to about 86.8% total THC.
Do suppliers ship THCA isolate to every state?
No. Smoky Mountain CBD, for example, does not ship THCA to Arkansas, Idaho, Minnesota, Oregon, Rhode Island, Tennessee or Texas. Ask each supplier for its current list.
How do I order THCA isolate from BCD?
Choose a size on the THCA isolate page and place the order, or call (303) 339-0343. We confirm the order and stock first, then email the payment link, and most orders ship within a day or two of payment.
How We Made This List
Bulk CBD Distributors (BCD) wrote this guide and sells THCA isolate, so we are one of the suppliers on it. We put ourselves first because it is our guide, not because we ranked ourselves; the others are in no set order. What we say about each other company comes from that company's own website as of October 31, 2026, and claims about testing or process are what each company says about itself. Prices, sizes and shipping policies change often, so check them with the supplier before you buy.