diff --git a/include/extern.h b/include/extern.h
index c5b0b0af9..3a7041556 100644
--- a/include/extern.h
+++ b/include/extern.h
@@ -1194,6 +1194,7 @@ extern int near_capacity(void);
 extern int calc_capacity(int);
 extern int max_capacity(void);
 extern boolean check_capacity(const char *);
+extern void dump_weights(void);
 extern int inv_cnt(boolean);
 /* sometimes money_cnt(gi.invent) which can be null */
 extern long money_cnt(struct obj *) NO_NNARGS;
diff --git a/include/hack.h b/include/hack.h
index f2f8d979a..d356d64c5 100644
--- a/include/hack.h
+++ b/include/hack.h
@@ -440,6 +440,7 @@ enum earlyarg {
 #endif
     , ARG_DUMPGLYPHIDS
     , ARG_DUMPMONGEN
+    , ARG_DUMPWEIGHTS
 #ifdef WIN32
     , ARG_WINDOWS
 #endif
diff --git a/include/objects.h b/include/objects.h
index 784b66c36..93866d1a5 100644
--- a/include/objects.h
+++ b/include/objects.h
@@ -1501,7 +1501,7 @@ COIN("gold piece", 1000, GOLD, 1, GOLD_PIECE),
     OBJECT(OBJ(name, desc),                                             \
            BITS(0, 1, 0, 0, 0, 0, 0, 0, 0,                              \
                 HARDGEM(mohs), 0, -P_SLING, glass),                     \
-           0, GEM_CLASS, prob, 0, 1, gval, 3, 3, 0, 0, nutr, color, sn)
+           0, GEM_CLASS, prob, 0, wt, gval, 3, 3, 0, 0, nutr, color, sn)
 #define ROCK(name,desc,kn,prob,wt,gval,sdam,ldam,mgc,nutr,mohs,glass,colr,sn) \
     OBJECT(OBJ(name, desc),                                             \
            BITS(kn, 1, 0, 0, mgc, 0, 0, 0, 0,                           \
diff --git a/src/allmain.c b/src/allmain.c
index f65ce13b2..f3fe1decd 100644
--- a/src/allmain.c
+++ b/src/allmain.c
@@ -938,6 +938,7 @@ static const struct early_opt earlyopts[] = {
 #endif
     { ARG_DUMPGLYPHIDS, "dumpglyphids", 12, FALSE },
     { ARG_DUMPMONGEN, "dumpmongen", 10, FALSE },
+    { ARG_DUMPWEIGHTS, "dumpweights", 11, FALSE },
 #ifdef WIN32
     { ARG_WINDOWS, "windows", 4, TRUE },
 #endif
@@ -1042,6 +1043,9 @@ argcheck(int argc, char *argv[], enum earlyarg e_arg)
         case ARG_DUMPMONGEN:
             dump_mongen();
             return 2;
+        case ARG_DUMPWEIGHTS:
+            dump_weights();
+            return 2;
 #ifdef CRASHREPORT
         case ARG_BIDSHOW:
             crashreport_bidshow();
diff --git a/src/hack.c b/src/hack.c
index 8f4a21fc9..6d282e896 100644
--- a/src/hack.c
+++ b/src/hack.c
@@ -49,6 +49,7 @@ staticfn void move_update(boolean);
 staticfn int pickup_checks(void);
 staticfn void maybe_wail(void);
 staticfn boolean water_turbulence(coordxy *, coordxy *);
+staticfn int QSORTCALLBACK cmp_weights(const void *, const void *);
 
 #define IS_SHOP(x) (svr.rooms[x].rtype >= SHOPBASE)
 
@@ -4293,6 +4294,106 @@ check_capacity(const char *str)
     return 0;
 }
 
+struct weight_table_entry {
+    unsigned wtyp; /* 1 = monst, 2 = obj */
+    const char *nm;
+    int wt, idx;
+    boolean unique;
+};
+
+static struct weight_table_entry *weightlist;
+
+void
+dump_weights(void)
+{
+    int i, cnt = 0, nmwidth = 49, mcount = NUMMONS, ocount = NUM_OBJECTS;
+    char nmbuf[BUFSZ], nmbufbase[BUFSZ];
+    struct obj o = cg.zeroobj;
+
+    weightlist = (struct weight_table_entry *) alloc(sizeof(struct weight_table_entry)
+                                               * (mcount + ocount));
+    decl_globals_init();
+    init_objects();
+    o.quan = 1;
+    o.known = o.dknown == 1;
+    for (i = 0; i < mcount; ++i) {
+        if (i != PM_LONG_WORM_TAIL) {
+            weightlist[cnt].idx = i;
+            weightlist[cnt].wtyp = 1;
+            weightlist[cnt].nm = dupstr(mons[i].pmnames[NEUTRAL]);
+            weightlist[cnt].wt = (int) mons[i].cwt;
+            weightlist[cnt].unique = ((mons[i].geno & G_UNIQ) != 0);
+            cnt++;
+        }
+    }
+    for (i = 0; i < ocount; ++i) {
+        int wt = (int) objects[i].oc_weight;
+        if (wt && i != SLIME_MOLD && obj_descr[i].oc_name) {
+            weightlist[cnt].idx = i;
+            o.otyp = i;
+            o.oclass = objects[i].oc_class;
+            weightlist[cnt].wtyp = 2;
+            weightlist[cnt].nm = dupstr(obj_descr[i].oc_name);
+            weightlist[cnt].wt = wt;
+            weightlist[cnt].unique = (objects[i].oc_unique != 0);
+            cnt++;
+        }
+    }
+    qsort((genericptr_t) weightlist, cnt,
+          sizeof (struct weight_table_entry), cmp_weights);
+    raw_printf("int all_weights[] = {");
+    for (i = 0; i < cnt; ++i) {
+        if (weightlist[i].wtyp == 1) {
+            boolean cm = CapitalMon(weightlist[i].nm);
+
+            Snprintf(nmbuf, sizeof nmbuf, "%s%s", "the body of ",
+                     (cm)                   ? the(weightlist[i].nm)
+                     : weightlist[i].unique ? weightlist[i].nm
+                                            : an(weightlist[i].nm));
+        } else {
+            Snprintf(nmbufbase, sizeof nmbufbase, "%s%s",
+                     objects[weightlist[i].idx].oc_class == POTION_CLASS
+                         ? "potion of "
+                     : objects[weightlist[i].idx].oc_class == WAND_CLASS
+                         ? "wand of "
+                     : objects[weightlist[i].idx].oc_class == SCROLL_CLASS
+                         ? "scroll of " 
+                     : objects[weightlist[i].idx].oc_class == SPBOOK_CLASS
+                         ? "spellbook of "
+                         : "",
+                     weightlist[i].nm);
+            Snprintf(nmbuf, sizeof nmbuf, "%s",
+                     (weightlist[i].unique) ? the(nmbufbase) : an(nmbufbase));
+        }
+        raw_printf("    %7u%s /* %*s */", weightlist[i].wt,
+                   (i == cnt - 1) ? " " : ",", -nmwidth, nmbuf);
+        if (weightlist[i].nm)
+            free((genericptr_t) weightlist[i].nm), weightlist[i].nm = 0;
+    }
+    raw_print("};");
+    raw_print("");
+    free((genericptr_t) weightlist);
+    freedynamicdata();
+}
+
+staticfn int QSORTCALLBACK
+cmp_weights(const void *p1, const void *p2)
+{
+    struct weight_table_entry *i1 = (struct weight_table_entry *) p1,
+                              *i2 = (struct weight_table_entry *) p2;
+    int x1 = i1->wt << 17, x2 = i2->wt << 17,
+        t1 = ((i1->wtyp == 1) ? 0 : 1) << 16,
+        t2 = ((i2->wtyp == 1) ? 0 : 1) << 16;
+
+    x1 |= t1 | ((i1->nm != 0) ? i1->nm[0] : 0) << 8;
+    x2 |= t2 | ((i2->nm != 0) ? i2->nm[0] : 0) << 8;
+
+    x1 |= ((i1->nm != 0) ? i1->nm[1] : 0);
+    x2 |= ((i2->nm != 0) ? i2->nm[1] : 0);
+
+    return (x1 - x2);
+}
+
 int
 inv_cnt(boolean incl_gold)
 {
diff --git a/sys/unix/unixmain.c b/sys/unix/unixmain.c
index 154c7e15b..6e943d685 100644
--- a/sys/unix/unixmain.c
+++ b/sys/unix/unixmain.c
@@ -662,6 +662,9 @@ early_options(int *argc_p, char ***argv_p, char **hackdir_p)
             } else if (argcheck(argc, argv, ARG_DUMPMONGEN) == 2) {
                 opt_terminate();
                 /*NOTREACHED*/
+            } else if (argcheck(argc, argv, ARG_DUMPWEIGHTS) == 2) {
+                opt_terminate();
+                /*NOTREACHED*/
             } else {
 #ifdef CHDIR
                 oldargc = argc;
diff --git a/sys/windows/windmain.c b/sys/windows/windmain.c
index c622a707e..45282b446 100644
--- a/sys/windows/windmain.c
+++ b/sys/windows/windmain.c
@@ -487,6 +487,9 @@ early_options(int argc, char *argv[])
         if (argcheck(argc, argv, ARG_DUMPMONGEN) == 2) {
             nethack_exit(EXIT_SUCCESS);
         }
+        if (argcheck(argc, argv, ARG_DUMPWEIGHTS) == 2) {
+            nethack_exit(EXIT_SUCCESS);
+        }
         if (argcheck(argc, argv, ARG_DEBUG) == 1) {
             argc--;
             argv++;