कौस्तुभ
Kaustubha is the gem upon the Lord's chest. At SB 3.8.30 the form on which Brahma meditates is 'kirITa-sAhasra-hiraNya-shR^i~Ngam Avirbhavat kaustubha-ratna-garbham' — of a thousand golden horns, whose womb is the Kaustubha gem. The verse describes, in the vision Brahma attained in absorption, that form which is the abode of the moving and the unmoving, hidden in the water.
Śrīmad Bhāgavata Mahāpurāṇa 3.8.30 — Sanskrit Wikisource (pinned chapter page; Devanagari from the cross-validated transcription in validation/sanskrit_skandha3.json)
At SB 3.8.30 Brahma meditates on that form, 'kirITa-sAhasra-hiraNya-shR^i~Ngam Avirbhavat kaustubha-ratna-garbham' — of a thousand golden horns, whose womb is the Kaustubha gem.
