Gold earrings with diamond

Manufacturer code: EJER7472
Material: Gold
Stone: Diamond (Color: H-white, Clarity: SI, Weight: 0.310ct)
Material color: Red
Purity: 585
Item: W76458305
Weight: 1.94 gr
Height: 12 mm

New, only tried on, receipt included.
Purchased at Riga Plaza Given store.
https://given.lv/lv/juvelierizstradajumi/gold-diamonds-auskari-w76458305?_gl=1*1qp0aoi*_up*MQ..*_gs*MQ..&gclid=EAIaIQobChMItvC_saTdkQMV1VCRBR2FOwJ-EAAYASAAEgISmvD_BwE&gbraid=0AAAAACUZkKZ5wV3yW1g2zXVYgLw1cQuwa

If necessary, I can additionally conduct an examination at the Latvian Assay Office.