A/E compares actual wins with what starting prices implied. "Fair" strips the bookmaker margin from the expectation, so favourites and longshots are judged on the same footing — figures near 1.00 mean the market priced this horse about right.
KTB Speed and Rating
KTB Speed
No KTB Speed figures for this horse. The engine scores GB and Irish racing from Oct 2016; runs elsewhere, or earlier, have no figure.
KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 0 figures from 0 runs · a record, not a forecast
KTB Rating
Best recent KTB Rating90Cthe best of the last 3 rated runs · Downpatrick, 26 Sep 2012Official rating 86at the last run, 21 Oct 2012
What the horse achieved in each race, in pounds on the official-rating scale, from the weight carried, the lengths beaten and the race's own level solved across the archive — never the market, never the official rating as a starting point. The headline is the best of the horse's last three rated runs on that code. A, B or C on a run is how much known form was in that race. What this means →
Jumps 10 figures · best 100A · median 91.5
Going
Runs
Best
Median
Since 27 Oct 2025
Heavy
3
94C
93
—
Good to Firm
3
98A
94
—
Soft
2
90C
89
—
Good to Soft
1
—
—
—
Good
1
—
—
—
Distance
Runs
Best
Median
Since 27 Oct 2025
1m5f – 2m
6
100A
93.5
—
2m1f – 2m4f
4
94C
88.5
—
KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 10 figures from 10 runs · as at 4 Oct 2026 · a record, not a forecast
Both figures are KTB's own, computed from the archive; no vendor rating enters either. Every run's figure is on its form line below with its grade. Grades measure how much the archive could see, never the merit of the run.
Run style is derived from in-running commentary, which our data provider does not supply for this horse's races.
Pedigree intelligence
Sire
Beneficial (GB)
Progeny in our archive have won 10.4% of 17,044 runs since Jan 2008 (1,155 horses).
Going
Runs
Wins
SR
vs sire
This horse
Firm
66
5
7.6%
−2.8
—
Good to Firm
939
107
11.4%
+1
0 from 3
Good
5,296
549
10.4%
0
0 from 1
Good to Soft
2,466
267
10.8%
+0.4
0 from 1
Soft
5,057
519
10.3%
−0.1
0 from 2
Heavy
3,159
328
10.4%
0
0 from 3
Standard (AW)
61
6
9.8%
−0.6
—
Distance (all codes)
Runs
Wins
SR
vs sire
This horse
6f – 7f
2
0
0%
−10.4
—
1m – 1m1f
10
1
10%
−0.4
—
1m2f – 1m4f
64
5
7.8%
−2.6
—
1m5f – 2m
4,890
502
10.3%
−0.1
0 from 6
2m1f – 2m4f
6,355
661
10.4%
0
0 from 4
2m5f – 3m
4,701
522
11.1%
+0.7
—
Over 3m
1,022
90
8.8%
−1.6
—
Flat and jumps together (all codes) · since Jan 2008 · as at 27 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast
Splits include every sample, however small — muted rows are under 3 runs. A one-from-one record is a fact, not a trend: read the Runs column before the strike rate.
Gemstone Star (IRE) has yet to win, from 10 archived starts between 2009 and 2012.
Who trained Gemstone Star?
Gemstone Star (IRE) was trained by R T J Wilson on the most recent run on record, at Naas on 21 October 2012.
Who is Gemstone Star's sire?
Gemstone Star (IRE) is by Beneficial (GB) out of Ainneoin (IRE), whose sire is Lord Americo.
What is Gemstone Star's official rating?
The most recent official rating on record is 86, from the run on 21 October 2012. The highest on record is 91.
What is Gemstone Star's sire's record?
Beneficial (GB)'s progeny in our archive have won 10.4% of 17,044 runs since Jan 2008 (1,155 horses), Flat and jumps together.
Who are Gemstone Star's siblings?
Out of Ainneoin (IRE), Gemstone Star (IRE) has 1 other produce in our archive, 0 of them winners. As at Oct 2026.
Gemstone Star (IRE)·0–10·SR 0%
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