Đặc biệt với dịch vụ tư vấn 1-1 tận tâm, nhiệt tình, chúng tôi sẽ giúp tìm ra viên kim cương thiên nhiên tối ưu nhất dựa trên các tiêu chuẩn 4Cs (Carat, Color, Clarity, Cut) và tiêu chí chuyên sâu như Triple X (3 Excellent: Excellent cut, Excellent symmetry, Excellent Polish) hay None Fluorescence & Fluorescence.
Hãy liên hệ ngay với chúng tôi để sở hữu những viên kim cương đẹp nhất và đáng giá nhất dành riêng cho bạn!
What are GIA, AGS, and IGI diamond certificates?keyboard_arrow_down keyboard_arrow_up
A Gemological Institute of America (GIA), American Gem Society (AGS), or International Gemological Institute (IGI) diamond certificate assures the value and quality of your diamond. GIA, AGS, and IGI are the gold standard in diamond grading. Their reports detail key characteristics of each diamond.
What are the "Four Cs"? keyboard_arrow_down keyboard_arrow_up
The Four Cs - Carat (size), Color, Clarity and Cut are the industry grade standards from the Gemological Institute of America (GIA). Every diamond is specifically graded on these features.
What is a Triple X diamond?keyboard_arrow_down keyboard_arrow_up
Triple X diamond is a trade term for round brilliant diamonds that have been graded by GIA as having Excellent cut, Excellent symmetry and Excellent polish. X is short for Excellent, so Triple X really just means Triple Excellent. A diamond’s cut, symmetry and polish grades indicate the quality of craftsmanship that went into transforming a diamond rough into a polished stone. All three affect a diamond’s interaction with light and are described on GIA Diamond Grading Reports as Excellent, Very Good, Good, Fair, to Poor. Many diamond buyers seek out Triple Excellent diamonds because they want diamonds with the best possible craftsmanship. Top notch craftsmanship ensures that a diamond gives off maximum light and fire while having an attractive pattern.
What is diamond fluorescence? keyboard_arrow_down keyboard_arrow_up
Fluorescence is the glow you sometimes see when an object emits visible light. Some diamonds fluoresce when they are exposed to ultraviolet (UV) rays from sources like the sun and fluorescent lamps. This can cause them to emit a bluish light or more rarely, a yellow or orangy light. Once the UV light source is removed, the diamond stops fluorescing.
How do I know if the diamond is graded by GIA or not?keyboard_arrow_down keyboard_arrow_up
If you view Tierra diamond listing, each diamond is accompanied by a GIA number below its photo. Clicking on it will bring you directly to the GIA website where a digital version of the certificate is hosted. This is uploaded directly by GIA and cannot be manipulated by any 3rd parties like diamond shops. You can also access the same page from GIA’s Report Check to validate that the information on your physical certificate matches what is archived in the GIA report database. This method can be done swiftly and conveniently – all you need to enter is the diamond’s GIA number. With the online archive, it is impossible to falsify documents. With each Tierra order, you will receive the original (printed) GIA certificate for your purchased diamond but you can also download a digital copy in PDF format from GIA’s website.
What is a GIA diamond?keyboard_arrow_down keyboard_arrow_up
A GIA diamond is really shorthand diamond sellers use to describe diamonds that have been graded by GIA. GIA is an independent, nonprofit organization that conducts gem research, educates gem professionals and sets the standards for determining diamond quality. One of GIA’s main functions is the grading of diamonds. You may have already heard or learned about the 4Cs of diamond quality: color, clarity, cut and carat weight. GIA created this standard, along with the scientific procedures for evaluating each “C” and the grading terminology used to describe them. GIA does not mine diamonds, nor does it buy, sell or trade them commercially. It doesn’t appraise diamonds and is not otherwise involved in diamond pricing or valuation. GIA operates independently of these commercial interests, ensuring that its diamond quality assessments are completely objective and unbiased.