Presidium Instruments

What Presidium Instruments does

Presidium Instruments Pte Ltd is a Singapore-incorporated, privately held manufacturer of gemological instruments founded in 1979, recognized in its own materials as the world's first company to launch specialized testing instruments for the diamond and gemstone industries. The company designs, builds, and sells a portfolio of roughly 20 hardware products spanning diamond and moissanite testers (e.g., Diamond Mate A/C, Multi Tester III, Moissanite Tester II), colored gemstone testers (Gem Tester II, Duo Tester II, Refractive Index Meter II, Gem Indicator, Synthetic Ruby Identifier), synthetic diamond screeners (SAM, SDS II), the OTi dual Optical/Thermal verification instrument, plus gemstone gauges, digital carat scales, and engraving machines (PIREM, PJEM). The underlying technology stack is purely physical: retractable 0.6mm thermoelectric probe tips, long-wave and short-wave UV light analysis, reflectivity measurement, and digital refractometry — with no AI/ML, API, or software platform layer. Products are RoHS- and WEEE-compliant and carry registered trademarks including Presidium Diamond Verification Instrument®.

The business model is straightforward hardware sales with one-time/perpetual pricing in Singapore Dollars (SGD 183–2,349 per instrument), plus accessories and consumables. Go-to-market is dual-channel: a global network of 130+ authorized resellers across 40+ countries (Americas, Asia, Europe, Middle East, Australia) targeting institutional and enterprise buyers, complemented by a direct-to-consumer e-commerce store (presidium.com.sg) with Stripe payments, DHL/FedEx global shipping, a Refer-a-Friend program, and loyalty rewards. The customer base is a fragmented mix of retail jewelers, pawnbrokers, gemological institutes and laboratories, jewelry manufacturers, diamond appraisal businesses, and gem hobbyists — serving the industry-wide need to authenticate natural diamonds, detect synthetic/lab-grown diamonds (CVD/HPHT), differentiate moissanite and simulants, and measure colored gemstones at point of sale.

The company operates from a single headquarters at 207 Henderson Road, Singapore, with 11–50 employees, no disclosed funding rounds, no parent company, and no subsidiaries. Leadership, headcount trends, and financial performance are not publicly disclosed; the firm appears to be a closely held, founder-owned SME that has sustained operations for 45+ years primarily through product iteration (most recent flagship: OTi in May 2025) and steady expansion of its international reseller footprint rather than through external capital or M&A.

Name

Presidium Instruments

Legal name

Presidium Instruments Pte Ltd

Website

https://presidium.com.sg

Company type

Private

Founded year

1979

Operating status

Operating

Headcount range

11–50 employees

Short description

Presidium Instruments is a Singapore-based, privately held manufacturer founded in 1979 that designs and sells gemological testing instruments — including diamond testers, moissanite detectors, synthetic diamond screeners, refractive index meters, and gemstone gauges — to retail jewelers, pawnbrokers, gemological institutes, and manufacturers across 40+ countries via 130+ resellers and direct e-commerce.

Ownership category

akta.pro rank

Product category

Gemological Testing Instruments

NAICS

Analytical Laboratory Instrument Manufacturing (334516)

SIC

Laboratory Analytical Instruments (3826), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Colored Gemstone Identification & Certification Laboratories (CRAKAJAH)

akta.pro secondary industries

Diamond Grading & Certification Laboratories (CRAKAJAG), Synthetic/Lab-Grown Diamonds & Gemstones (Manufacturing & Trading) (CRAKAJAM)

Keywords

• Gemological testing instruments
• Diamond verification devices
• Moissanite testers
• Colored gemstone testers
• Gemstone measurement gauges

Headquarters

HQ city

Bukit Merah

HQ country

Singapore

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Gemological Testing Instruments: Sale of proprietary hardware products including diamond testers, moissanite testers, colored gemstone testers, refractive index meters, and synthetic diamond screeners. Products sold as one-time purchases with optional accessories and consumables.
2. Gemstone Gauges and Measuring Instruments: Sale of electronic gemstone gauges, dial gauges, and carat scales for dimensional and weight measurements in the jewelry industry.
3. Accessories and Spare Parts: Sale of accessories including universal adaptors, rechargeable batteries, probe pens, stone rests, and calibration discs.
4. Engraving Machines: Sale of precision engraving machines (PIREM, PJEM) for jewelry personalization.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Presidium Instruments manufactures and sells a proprietary line of handheld and desktop gemological instruments — including diamond verifiers, moissanite testers, colored gemstone testers, refractive index meters, gemstone gauges, carat scales, and jewelry engraving machines — for jewelry retailers, gemological institutes, manufacturers, appraisers, and pawnbrokers. Products are based on thermal conductivity, UV (long-wave and short-wave), and reflectivity measurement technologies and are sold globally via a direct e-commerce store and a network of 130+ authorized resellers.

Product overview

Presidium Instruments is a comprehensive gemological instruments company offering a diversified portfolio of precision testing, measurement, and verification tools for the jewelry and gemstone industry. The core product lines include: Diamond Verification Instruments (OTi, ARI) for identifying natural vs. synthetic diamonds; Diamond & Moissanite Testers (Diamond Mate, Multi Tester III, Moissanite Tester II) for authenticity verification; Colored Gemstone Testers (Gem Tester II, Gem Indicator, Duo Tester II, Refractive Index Meter II, Synthetic Ruby Identifier) for gemstone identification; Gemstone Gauges (PGCG, PEGG, PDG) for dimensional measurement; Carat Scales (PCS-50LFT, PCS-100) for weight measurement; and Engraving Machines (PIREM, PJEM) for jewelry personalization. Products are available as standalone instruments or in bundles, with accessories including adaptors and replacement probes. The company positions itself as the world's first and leading manufacturer of gemological instruments since 1979.

Differentiator

Problem solved

Functional benefit

Products and services

• OTi by Presidium Compact diamond verification instrument that integrates dual Optical/Thermal technologies into a single probe, identifying natural diamonds, synthetic diamonds (CVD/HPHT/Type IIA), moissanite, and simulants in 3 seconds. Designed for jewellers, pawnbrokers, and gem enthusiasts.
• ARI by Presidium

Quantifiable outcome

• Tests stones as small as 0.02 carats with industry-leading 0.6mm probe tip
• +3 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature5 records

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• OGI Systems: Manufacturer of gemological testing instruments including diamond and moissanite testers. Directly competes with Presidium in the same handheld tester category serving retail jewelers and pawnbrokers.
• Yehuda Diamond Company: Maker of the Yehuda Diamond Tester and other portable diamond verification devices. Competes with Presidium's Diamond Mate and Multi Tester III in the handheld diamond authentication segment.
• GemPen / Goldway Instruments: Manufacturer of gemological and gold testing instruments based in China. Directly competes with Presidium in the handheld diamond/moissanite tester category, often at lower price points in Asian distribution channels.

Broad incumbents

• Sarine Technologies: Provider of advanced diamond and gemstone technologies spanning manufacturing, grading, and retail. Overlaps with Presidium in gemological measurement instruments but operates at a much larger scale with broader portfolio.
• GIA (Gemological Institute of America): World's leading gemological laboratory and education institution that develops and uses its own diamond and gemstone verification instruments. Competes indirectly with Presidium by offering laboratory-grade testing services and equipment.
• HRD Antwerp: European gemological institute providing diamond certification and equipment. Competes with Presidium's gemological instruments through lab services and may offer its own testing tools to the trade.
• International Gemological Institute (IGI): Global gemological laboratory operating certification and grading services for diamonds and colored gemstones. Overlaps with Presidium's gemstone testing/identification value proposition as a competing laboratory ecosystem.

Emerging players

• De Beers (Tracr): Major diamond industry player developing blockchain-based provenance verification (Tracr). Represents an emerging competitive approach to diamond authentication that could complement or displace physical instrument-based testing offered by Presidium.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/user/presidiuminstruments
• Xx.com/askPresidium

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Presidium Instruments