9ct Yellow Gold 1.54ct Oval Blue Topaz PendantMade in a warm 9ct yellow gold, this classic pendant features a sky blue 1. 54ct oval cut blue topaz gemstone as the star of show. At 8mm by 6mm the pendant is on the more delicate side, so we recommend wearing it alongside one of our other blue topaz pieces such as our oval blue topaz ring or our oval blue topaz earrings. As blue topaz is the birthstone for November, we find this pendant makes an excellent gift for a loved one such as a daughter,