I noted the dispute some time ago here. This article related some further developments:
Ashkenazi Chief Rabbi Kalman Ber echoed his sentiment [i.e., in Rabbi Rabinowitz's letter], stressing that such religiously significant stones should not be treated as museum artefacts. Both the chief rabbis are expected to issue a formal declaration in the coming days regarding their position on the matter.However, the IAA is standing firm in its decision to exhibit the stone, pointing out that it was previously displayed at the Knesset without objection.
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