Sage is a very lovely 0.50ct diamond solitaire set in 14ct white gold.
Metal: 14ct white gold, stamped (14K michael hill 0.50TDW 11057)
Stone: 0.50ct brilliant cut diamond, clarity I1, colour "O-P", medium cut quality.
Weight: 2.34gm
Condition: new/ near new
Manufacturing standard: medium-high 
Insurance replacement appraisal $3800
Please get in touch if you'd like more details or to see the valuation.