16 Collyer Quay, #21-00, Singapore 049318
http://www.lexcellencediamond.com/
+65 6589 8738
541 Orchard Rd, #09-01 Liat Towers, Singapore 238881
https://bunker-group.com/
+65 8351 2729
24 Raffles Place, #02-17 Clifford Centre, Singapore 048621
http://www.exoticgems.com.sg/
+65 6438 3598
ION Orchard, 2 Orchard Turn, #01-02, Singapore 238801
http://www.thehourglass.com/
+65 6509 9282
