Portable Diamond Tester Pen for Jewelry Screening – Thermal Conductivity Testing Tool for Home and Jewelry Inspection
$29.29
- Free US shipping
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Arrives
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Quick Diamond Screening: Uses thermal conductivity testing to help evaluate diamond jewelry and loose gemstones during preliminary inspections.
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Easy-to-Read Indicators: Features a visible LED indicator scale for monitoring readings while testing stones.
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Convenient Handheld Design: The portable, pen-style body makes it easy to position the testing tip against individual gemstones.
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Practical Jewelry Inspection Tool: Suitable for preliminary checks of rings, earrings, pendants, and loose stones before further professional evaluation.
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Useful for Home or Jewelry Workspaces: A convenient addition to a jewelry inspection toolkit. Battery power is required, and batteries are not included.
- Free 30-Day Returns
- Full Refund for Damaged or Incorrect Items
- Guaranteed Delivery or Money Back
- Secure Checkout & Fast Support
What Customers Are Saying
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Quick Diamond Screening: Uses thermal conductivity testing to help evaluate diamond jewelry and loose gemstones during preliminary inspections.
-
Easy-to-Read Indicators: Features a visible LED indicator scale for monitoring readings while testing stones.
-
Convenient Handheld Design: The portable, pen-style body makes it easy to position the testing tip against individual gemstones.
-
Practical Jewelry Inspection Tool: Suitable for preliminary checks of rings, earrings, pendants, and loose stones before further professional evaluation.
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Useful for Home or Jewelry Workspaces: A convenient addition to a jewelry inspection toolkit. Battery power is required, and batteries are not included.
About This Item
The Portable Diamond Tester Pen is a handheld thermal conductivity testing device designed for preliminary diamond screening and jewelry inspection. It features a pointed testing probe, multi-color LED indicator scale, dedicated green diamond indicator, audible feedback, and a conductive metal contact plate. The device helps users evaluate gemstone responses through thermal conductivity testing, offering a convenient screening method for loose diamonds and mounted jewelry.
Key Features
1. Green Diamond Indicator for Testing Response
When a tested stone produces a thermal conductivity response consistent with a diamond, the dedicated diamond indicator illuminates green, providing a clear visual signal. This makes it easier to observe the test result during gemstone inspection.
2. Three-Color LED Indicator Scale
The built-in green, yellow, and red LED scale displays the testing response. Users can monitor the illuminated segments and reference the numbered scale to evaluate the gemstone during testing.
3. Audible Feedback & Metal Contact Alert
Built-in audio feedback provides additional information during testing. According to the manufacturer's instructions, a continuous buzzing sound alerts users when the probe accidentally contacts metal rather than the gemstone, helping prevent improper testing contact.
4. Diamond Screening for Different Stone Sizes
Features a Large/Small selection for diamond testing, designed to accommodate different stone sizes and testing ranges, including the approximately 8-point adjustment described by the manufacturer.
5. Temperature & Carat Weight Reference Settings
The rear calibration chart helps users select the appropriate setting according to the gemstone's carat weight and indoor temperature. This helps account for different testing conditions.
6. Adjustable Audio Volume
The built-in volume control allows users to adjust the sound level for a more convenient testing experience.
7. Easy-to-Use Handheld Design
Designed for both beginners and experienced jewelry enthusiasts. The pointed probe allows contact with individual gemstones, while the LED scale and audible signals make testing responses easier to observe.
8. Portable Battery-Powered Operation
Powered by one 6F22 9V battery (not included). Its compact handheld construction makes it suitable for home jewelry inspection, jewelry workshops, and portable gemstone screening.
What Problem It Solves
Diamonds, cubic zirconia (CZ), crystal, and other diamond-like materials can look similar to the naked eye. Visual inspection alone may not provide enough information to evaluate a gemstone.
This tester offers an additional screening method by measuring thermal conductivity and displaying the response through visual indicators and audible signals. According to the manufacturer's operating instructions, certain imitation materials, such as cubic zirconia, may produce little or no diamond-indicator response.
How to Use
Step 1 – Install the Battery
Open the battery compartment and connect one 6F22 9V battery. The battery is not included.
Step 2 – Power On & Preheat
Switch on the tester. The power indicator illuminates as the device begins warming up. Wait a few seconds until the READY indicator turns on before testing.
Step 3 – Select the Appropriate Setting
Refer to the calibration chart on the back of the tester. Adjust the setting according to the gemstone's carat weight and indoor temperature. Use the appropriate Large/Small selection when applicable.
Step 4 – Prepare the Gemstone
For loose gemstones, place the stone securely in the appropriate recessed hole of the supplied support tray, with its flat top surface facing upward. For mounted jewelry, hold the item securely by hand.
Step 5 – Position the Tester Correctly
Remove the protective probe cap. Hold the tester and keep your index finger in contact with the conductive metal plate on the back of the device. This contact is necessary for proper operation.
Step 6 – Test at a 90-Degree Angle
Position the probe perpendicular to the flat surface of the gemstone at approximately 90 degrees. Gently touch the probe to the stone without applying excessive pressure. Avoid contacting the surrounding metal setting.
Step 7 – Read the Indicator Response
Observe the LED scale, dedicated diamond indicator, and audible feedback.
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Green Diamond Indicator: Illuminates when the stone produces a thermal conductivity response consistent with a diamond, according to the manufacturer's instructions.
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LED Scale & Beeping: A strong indicator response accompanied by an audible beep provides an additional testing signal.
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No or Insufficient Diamond Response: Certain imitation materials, such as cubic zirconia, may show little or no diamond-indicator response.
For accurate operation, always maintain proper finger contact with the rear metal plate and keep the probe perpendicular to the gemstone.
Product Specifications
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Product Type: Portable Diamond Tester Pen
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Model: Diamond Selector II
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Testing Method: Thermal Conductivity
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Indicator System: Green Diamond Indicator + Multi-Color LED Scale
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Audio Feedback: Built-In Buzzer
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Volume Control: Adjustable
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Testing Selection: Large/Small
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Material: Metal and Plastic
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Color: Black
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Dimensions: 135 × 40 × 23 mm (5.31 × 1.57 × 0.91 inches)
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Power Supply: 1 × 6F22 9V Battery
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Battery Included: No
Perfect For
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Jewelry enthusiasts and collectors
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Personal diamond screening
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Loose gemstone inspection
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Mounted jewelry testing
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Jewelry hobbyists and workshops
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Everyday jewelry inspection
Important Notes
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Professional gemological testing is recommended for definitive identification.
Processing Time
- We process and ship orders Monday through Friday, excluding holidays.
- Most orders are processed within 1–3 business days, depending on product availability.
- Processing time does not include delivery time, which varies based on your location and the product’s shipping origin.
Shipping Coverage
We currently ship to addresses within the United States only.
Products may ship from:
- Our U.S. warehouses, or
- Our international fulfillment centers (including Korea, Japan, China, Australia, Mexico, Canada, the United Kingdom, and the EU).
Each product page clearly displays the “Ships From” location before checkout.
Shipping Methods & Estimated Delivery
| Shipping Method | Estimated Delivery | Cost |
|---|---|---|
| Free Shipping (US) | 5–10 business days | Free, available on eligible items |
| Standard Shipping (US to US by Item) | 5–10 business days | $5.95 for the first item, $3.00 each additional |
| Standard Shipping (From US Warehouse by Weight) | 3–7 business days | Starts at $5.95, increasing by $2 for every additional 4 oz (0.25 lb) up to 1 lb, then by $4 for each additional pound beyond 1 lb. |
| Extended Delivery (Ships from Overseas Warehouse) | 10–20 business days | $14.99 for the first item, $2.00 each additional |
Shipping costs vary by product weight, quantity and origin. Exact rates and delivery estimates are displayed on each product page and confirmed during checkout.
Free Shipping
We offer free standard shipping on select products or during promotional periods. Availability of free shipping will be displayed on the product page and at checkout.
Carriers
We primarily use USPS and UPS for U.S. deliveries. Items shipped from international warehouses may be handled by partner carriers depending on the country of origin.
Import Duties & Taxes
All import duties and taxes for goods imported into the United States are included in the product price. There are no hidden fees or additional charges at checkout.
Tracking & Notifications
Every order is fully trackable. You will receive a tracking number via email once your order ships. If your order ships in multiple packages, each package will have its own tracking number. If you don’t receive a shipping confirmation immediately, your order is still being processed and will arrive within the estimated timeframe shown at checkout.
You can track your shipment anytime using the Track Your Order page on our website.
Order Changes & Cancellations
If you need to modify or cancel an order, please contact our customer support team as soon as possible. Orders can only be canceled before they ship. Once shipped, cancellations are not possible, but you may request a return after the item is delivered.
Contact: support@ibspot.com
Item Not Received
If your tracking number shows “Delivered” but you haven’t received your package:
- Check with your local USPS or UPS office.
- Confirm that the shipping address provided was correct.
- If the issue remains unresolved, contact support@ibspot.com for assistance.
Damaged or Lost Parcels
If your package arrives damaged or fails to arrive, please contact us immediately. For deliveries to P.O. boxes, ibspot is not responsible for damage caused by weather, temperature, or theft.
Customer Support
For any questions about shipping, tracking, or delivery, our customer support team is here to help.
Email: support@ibspot.com
We’re always happy to help.
Please read our policy carefully before making a purchase.
We aim to ensure every customer has a smooth and transparent experience with ibspot.com.
Order Cancellation Policy
Customers may request to cancel an order before it has been shipped.
Once the package has been shipped, cancellations are no longer possible; however, you may still request a return after receiving your order.
How to Request a Cancellation
You can contact us through:
- Email: support@ibspot.com
- Contact Form: Submit a request through our Contact Us page
Please submit your cancellation request as soon as possible after placing the order to allow us to process it before shipment.
Return Policy
We accept returns for most items within 30 days of delivery for a full refund.
To be eligible for a return:
- The item must be unused, in the same condition as received, and in its original packaging.
- A tracking number must be provided to confirm the return shipment.
Non-Returnable Items
Certain products cannot be returned, including:
- Perishable goods (for example, food, flowers, newspapers, magazines)
- Intimate or sanitary goods
- Hazardous materials or flammable liquids/gases
- Gift cards
- Downloadable software
- Some health and personal care items
Partial Refunds (If Applicable)
Partial refunds may be granted in specific situations, such as:
- Books with obvious signs of use
- Opened CDs, DVDs, software, or vinyl records
- Items not in their original condition, damaged, or missing parts not due to our error
- Items returned more than 30 days after delivery
How to Return an Item
To initiate a return, please contact us at support@ibspot.com with your order number and details about the product you wish to return.
Our team will provide you with return instructions and a prepaid return label.
Shipping Cost for Returns
Please contact us before returning any item.
We may provide a return shipping label for your return. If the return is due to our error, such as receiving the wrong item, a damaged item, or a defective product, we will cover the return shipping cost.
If the return is due to the customer’s reason, such as ordering the wrong item, changing your mind, or no longer needing the item, the original shipping fee and the return label fee will be deducted from your refund amount.
If a return is sent back without prior contact or without using our provided label, we cannot be held responsible for any return shipping costs or delivery issues.
For items valued over $75, we recommend using a trackable shipping service or purchasing shipping insurance.
We cannot guarantee that we will receive your returned item if shipped independently.
Refund Processing
Once your return is received and inspected:
- In-store returns are refunded to the original form of payment or issued as a gift card.
- Mail-in returns using our prepaid label are refunded to the original payment method within 3–5 business days after we receive your return.
Please allow:
- 5–7 business days for the return to reach our Returns Center.
- An additional 3–10 business days for your bank to post the refund to your account.
Damages, Issues & Claims
Please inspect your order immediately upon receipt.
If you receive a defective, damaged, or incorrect item, contact us right away at support@ibspot.com.
We’ll evaluate the issue promptly and make it right.
Product Claims
Before purchasing, please review product details carefully.
If there is a problem with your order upon arrival, visit our Support Center or contact us directly to arrange return shipping or replacement.
Exchanges
We do not process direct exchanges.
The fastest way to get what you need is to return the original item and place a new order once your return is accepted.
Return Address
IBSPOT Return Center
15 Sawmill Ln
Dover Plains, NY 12522
United States
Customer Support
Our support team is available 24/7 to assist with cancellations, returns, or general inquiries.
Email: support@ibspot.com
Contact Form: Contact Us page
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