GemLab is a pioneer in jewellery valuation and protection offering a service that is truly independent (we do not buy or sell). GemLab provides unbiased, transparent valuation reports and your information is kept confidential and secure. The company was established to fill the need for authoritative gemmological and valuation services for diamonds and jewellery in New Zealand. For more than 25 years now GemLab has been valuing New Zealanders' jewellery.