Color-changing mood stones are now available, changing color according to temperature. The stone is synthetic and cannot be natural. The sizes are as follows: Oval caption 13x18 mm for 25 SAR Round 18 mm for 30 SAR Round 14 mm for 20 SAR Domed round 12 mm for 20 SAR Limited quantity The last picture is for display only after crowning the ring with the mood stone. Location: Dammam, Al-Rakah district. Shipping is available to all regions of the Kingdom, paid by the buyer.