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GIA’s 4Cs app features video and interactive tools that teach consumers about how GIA grades color, cut, clarity and carat weight. It explains GIA’s D-to-Z color scale and how diamond color can affect value, GIA’s clarity scale and how diamond clarity can affect value, the factors that affect a diamond’s cut grade and the origins of the carat system.

Interactive tools show:

- How diamond color changes across the GIA D-to-Z Color Scale

- Typical inclusions and blemishes at various points in the GIA Clarity Scale

- A diamond’s anatomy and how various parameters influence a diamond’s cut grade

- How a diamond’s size changes by carat weight and enables consumers to compare the sizes of different diamonds

- An interactive GIA Grading Report Anatomy – to help consumers understand the different elements of a GIA report

Additional features include:

- Retailer Lookup (network connection required) allows consumers to find retailers that sell GIA-graded diamonds and/or have GIA-trained sales associates.

- Information on fluorescence, common diamond treatments, synthetics and simulants.

- Direct Access to GIA Report Check (network connection required) - GIA’s online database of reports. Consumers can verify the contents of a GIA report and view a PDF version of that report simply by entering a GIA report number.

GIA的4C标准应用的特点是向消费者GIA等级颜色，切工，净度和克拉重量如何视频和互动的工具。它解释了GIA的d-到-Z色标，以及如何钻石的颜色会影响值，GIA净度等级及其对钻石会影响价值，影响钻石的切工等级和克拉重量系统的起源的因素。

互动工具展示：

 - 如何跨越GIA d-到-Z色阶钻石的颜色变化

 - 在GIA净度等级典型的夹杂物和瑕疵的不同点

 - 钻石的解剖和如何将各种参数影响钻石的切工等级

 - 如何钻石的大小以克拉重量的变化，并使得消费者比较不同钻石的大小

 - 交互式GIA分级报告剖析 - 帮助消费者了解GIA证书的不同元素

其他功能还包括：

 - 零售商查找（需要网络连接）允许消费者发现卖带GIA钻石分级和/或有GIA培训的销售人员零售商。

 - 荧光，常见钻石处理方式，合成和模拟物的信息。

 -  GIA的报告在线数据库 - 以GIA报告检查（需要网络连接）的直接访问。消费者可以验证GIA报告的内容，并查看报告的PDF版本只需输入GIA证书编码。

GIA 4Cs Guide

GIA 4Cs Guide的最新版本