GRAM PRES
✓Price
$82.99
Diffraction Spectroscope, Pocket Grating Gemological Spectrometer for Quick Gemstone Identification and GIA Use
★★★★★
$82.99
Quantity
1
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About this item
- Reveals Gemstone Colors: Our Medium Spectroscope detects absorption patterns, whether by shining a light through transparent stones or viewing reflected light from opaque stones. Distinguish natural colors, irradiated diamonds, and synthetic stones.
- Spectrum Recognition: Inside, a raster-type pattern forms a rainbow spectrum with black or white interruptions. Learn to recognize this pattern for accurate gemstone analysis.
- Compact & Durable: Made of durable aluminum, our spectroscope is 55mm long and 15mm in diameter, ensuring portability and longevity.
- Versatile Gemstone Tool: Analyze loose or mounted stones with ease. Identify selective absorption of wavelengths to differentiate between natural and treated diamonds, and spot synthetic stones.
- Convenient Storage: Includes a leather pouch for safe and portable storage, allowing you to explore gemstone spectra anytime, anywhere.
Product details
Customer reviews
What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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